./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.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_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/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_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/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_88ce9967-3b83-4889-8d73-d9e878bb18a8/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 7c08193784b646afd298f73ae6296b7af2e0cac1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:26:20,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:20,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:20,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:20,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:20,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:20,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:20,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:20,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:20,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:20,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:20,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:20,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:20,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:20,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:20,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:20,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:20,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:20,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:20,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:20,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:20,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:20,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:20,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:20,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:20,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:20,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:20,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:20,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:20,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:20,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:20,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:20,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:20,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:20,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:20,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:20,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:20,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:20,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:20,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:20,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:20,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:26:20,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:20,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:20,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:20,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:20,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:20,437 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:20,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:20,437 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:20,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:20,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:20,446 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:20,446 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:20,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:20,447 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:20,447 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:20,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:20,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:26:20,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:20,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:20,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:20,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:20,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:20,450 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:26:20,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:20,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:20,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:20,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:20,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:20,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:20,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:20,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:20,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:20,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:20,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:20,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:20,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:20,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:20,456 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_88ce9967-3b83-4889-8d73-d9e878bb18a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2021-10-11 02:26:20,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:20,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:20,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:20,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:20,825 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:20,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-10-11 02:26:20,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/data/5bc94509c/e022fb1e8f0b4455ac4a2cbec43b5b0b/FLAGf37edbf9a [2021-10-11 02:26:21,402 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:21,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-10-11 02:26:21,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/data/5bc94509c/e022fb1e8f0b4455ac4a2cbec43b5b0b/FLAGf37edbf9a [2021-10-11 02:26:21,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/data/5bc94509c/e022fb1e8f0b4455ac4a2cbec43b5b0b [2021-10-11 02:26:21,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:21,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:21,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:21,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:21,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:21,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:21" (1/1) ... [2021-10-11 02:26:21,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e84865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:21, skipping insertion in model container [2021-10-11 02:26:21,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:21" (1/1) ... [2021-10-11 02:26:21,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:21,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:21,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:21,974 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:21,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:22,017 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:22,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22 WrapperNode [2021-10-11 02:26:22,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:22,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:22,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:22,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:22,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:22,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:22,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:22,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:22,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... [2021-10-11 02:26:22,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:22,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:22,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:22,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:22,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/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 02:26:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:22,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:22,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:22,367 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:26:22,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:22 BoogieIcfgContainer [2021-10-11 02:26:22,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:22,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:22,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:22,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:22,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:21" (1/3) ... [2021-10-11 02:26:22,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c80e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:22, skipping insertion in model container [2021-10-11 02:26:22,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:22" (2/3) ... [2021-10-11 02:26:22,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c80e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:22, skipping insertion in model container [2021-10-11 02:26:22,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:22" (3/3) ... [2021-10-11 02:26:22,399 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-10-11 02:26:22,418 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:22,421 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:26:22,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:26:22,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:22,465 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:22,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:22,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:22,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:22,466 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:22,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:22,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:26:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:26:22,485 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:22,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:26:22,487 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:26:22,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:22,511 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-11 02:26:22,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:22,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310955266] [2021-10-11 02:26:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:22,754 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 02:26:22,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310955266] [2021-10-11 02:26:22,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:22,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:22,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632189684] [2021-10-11 02:26:22,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:22,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:22,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:22,845 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2021-10-11 02:26:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:22,926 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 02:26:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:22,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:26:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:22,941 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:26:22,941 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:26:22,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:26:22,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:26:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-11 02:26:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:26:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-11 02:26:22,995 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2021-10-11 02:26:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:22,995 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-11 02:26:22,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-11 02:26:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:26:22,996 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:22,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:26:22,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:22,997 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:26:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2021-10-11 02:26:23,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:23,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103147845] [2021-10-11 02:26:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:23,057 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 02:26:23,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103147845] [2021-10-11 02:26:23,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:23,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:23,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83096006] [2021-10-11 02:26:23,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:23,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:23,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:23,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:23,064 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2021-10-11 02:26:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:23,138 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-11 02:26:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:23,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:26:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:23,139 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:26:23,139 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:26:23,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:26:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2021-10-11 02:26:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:26:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-11 02:26:23,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2021-10-11 02:26:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:23,144 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-11 02:26:23,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-11 02:26:23,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:26:23,145 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:23,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:26:23,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:23,146 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:26:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-11 02:26:23,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:23,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490678432] [2021-10-11 02:26:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:23,167 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 02:26:23,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490678432] [2021-10-11 02:26:23,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:23,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:23,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810875318] [2021-10-11 02:26:23,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:23,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:23,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:23,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:23,169 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2021-10-11 02:26:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:23,182 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-11 02:26:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:23,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:26:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:23,183 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:26:23,183 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:26:23,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:26:23,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:26:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-11 02:26:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:26:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-11 02:26:23,187 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2021-10-11 02:26:23,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:23,188 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-11 02:26:23,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-11 02:26:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:26:23,188 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:23,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:26:23,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:23,189 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:26:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:23,190 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2021-10-11 02:26:23,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:23,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554580060] [2021-10-11 02:26:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:23,234 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 02:26:23,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554580060] [2021-10-11 02:26:23,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:23,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:26:23,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297060056] [2021-10-11 02:26:23,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:23,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:23,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:23,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:23,239 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2021-10-11 02:26:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:23,257 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:26:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:23,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:26:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:23,259 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:26:23,259 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:26:23,260 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 02:26:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:26:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 02:26:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:26:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-11 02:26:23,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2021-10-11 02:26:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:23,266 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-11 02:26:23,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:23,266 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-10-11 02:26:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:26:23,267 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:23,267 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:26:23,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:23,269 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:26:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:23,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2021-10-11 02:26:23,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:23,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773408686] [2021-10-11 02:26:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:23,329 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 02:26:23,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773408686] [2021-10-11 02:26:23,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866568679] [2021-10-11 02:26:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/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 02:26:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:23,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:26:23,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:23,444 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 02:26:23,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:23,480 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 02:26:23,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1416011863] [2021-10-11 02:26:23,507 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:26:23,507 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:26:23,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:26:23,518 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:26:23,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:26:23,720 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:26:23,881 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:26:23,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:26:23,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-11 02:26:23,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912838846] [2021-10-11 02:26:23,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:23,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:26:23,886 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 6 states. [2021-10-11 02:26:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:23,946 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-10-11 02:26:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:23,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-10-11 02:26:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:23,951 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:26:23,951 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:26:23,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:26:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:26:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2021-10-11 02:26:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-10-11 02:26:23,974 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 7 [2021-10-11 02:26:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:23,975 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-10-11 02:26:23,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-10-11 02:26:23,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:26:23,976 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:23,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:24,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:24,199 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:26:24,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:24,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1360165828, now seen corresponding path program 1 times [2021-10-11 02:26:24,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:24,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51349121] [2021-10-11 02:26:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:24,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51349121] [2021-10-11 02:26:24,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272118232] [2021-10-11 02:26:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/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 02:26:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:24,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:26:24,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:24,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:24,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:24,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 6 [2021-10-11 02:26:24,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361189032] [2021-10-11 02:26:24,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:24,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:24,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:24,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:24,342 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 4 states. [2021-10-11 02:26:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:24,364 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-10-11 02:26:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:24,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:26:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:24,365 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:26:24,366 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:26:24,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:26:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:26:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-11 02:26:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:26:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-11 02:26:24,377 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 7 [2021-10-11 02:26:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:24,377 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-11 02:26:24,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-10-11 02:26:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:26:24,379 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:24,379 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2021-10-11 02:26:24,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 02:26:24,595 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:26:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:24,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1477250187, now seen corresponding path program 2 times [2021-10-11 02:26:24,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:24,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736438847] [2021-10-11 02:26:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:26:24,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736438847] [2021-10-11 02:26:24,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374203236] [2021-10-11 02:26:24,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 02:26:24,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-11 02:26:24,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:26:24,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:26:24,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:26:24,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:26:24,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [457631890] [2021-10-11 02:26:24,791 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:26:24,791 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:26:24,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:26:24,791 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:26:24,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:26:24,895 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:26:25,013 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:26:25,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:26:25,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-10-11 02:26:25,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045073047] [2021-10-11 02:26:25,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:25,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:25,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:25,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:26:25,016 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2021-10-11 02:26:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:25,064 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-10-11 02:26:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:25,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-10-11 02:26:25,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:25,065 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:26:25,065 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:25,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:26:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:25,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:26:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:25,067 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:25,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:25,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:25,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-11 02:26:25,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:25,344 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 02:26:25,344 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:25,344 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-11 02:26:25,345 INFO L258 CegarLoopResult]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 2147483646) (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~i~0 2147483648))) [2021-10-11 02:26:25,345 INFO L262 CegarLoopResult]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2021-10-11 02:26:25,345 INFO L258 CegarLoopResult]: At program point L19-2(lines 19 25) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~i~0 2147483648))) [2021-10-11 02:26:25,345 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 02:26:25,345 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-11 02:26:25,345 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:25,345 INFO L262 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-11 02:26:25,345 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-11 02:26:25,346 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-11 02:26:25,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:25 BoogieIcfgContainer [2021-10-11 02:26:25,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:25,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:25,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:25,362 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:25,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:22" (3/4) ... [2021-10-11 02:26:25,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:25,373 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:26:25,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:26:25,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:25,423 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ce9967-3b83-4889-8d73-d9e878bb18a8/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:25,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:25,424 INFO L168 Benchmark]: Toolchain (without parser) took 3638.64 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 48.4 MB in the beginning and 98.3 MB in the end (delta: -50.0 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:25,425 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 64.5 MB in the beginning and 64.4 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:25,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.67 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.2 MB in the beginning and 78.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:25,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 100.7 MB. Free memory was 78.9 MB in the beginning and 77.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:25,426 INFO L168 Benchmark]: Boogie Preprocessor took 24.05 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.8 MB in the end (delta: 918.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:25,427 INFO L168 Benchmark]: RCFGBuilder took 284.22 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 65.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:25,427 INFO L168 Benchmark]: TraceAbstraction took 2969.39 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 65.2 MB in the beginning and 47.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:25,428 INFO L168 Benchmark]: Witness Printer took 61.53 ms. Allocated memory is still 121.6 MB. Free memory was 47.6 MB in the beginning and 98.3 MB in the end (delta: -50.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:25,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 64.5 MB in the beginning and 64.4 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.67 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.2 MB in the beginning and 78.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 100.7 MB. Free memory was 78.9 MB in the beginning and 77.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.05 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.8 MB in the end (delta: 918.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 284.22 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 65.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2969.39 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 65.2 MB in the beginning and 47.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.53 ms. Allocated memory is still 121.6 MB. Free memory was 47.6 MB in the beginning and 98.3 MB in the end (delta: -50.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 && 0 <= i + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= j && i <= 2147483646) && n <= 2147483647) && 0 <= i + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 77 SDslu, 22 SDs, 0 SdLazy, 93 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 24 HoareAnnotationTreeSize, 2 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 78 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 2793 SizeOfPredicates, 6 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 68/87 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...