./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.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_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/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_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/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_42ebd456-27f8-4568-8be0-bb9f65ed22f4/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 d28857c86a3c83fc75b1b8cf8125f1c52a370911 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:25:14,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:14,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:14,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:14,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:14,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:14,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:14,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:14,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:14,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:14,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:14,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:14,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:14,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:14,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:14,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:14,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:14,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:14,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:14,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:14,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:14,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:14,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:14,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:14,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:14,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:14,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:14,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:14,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:14,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:14,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:14,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:14,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:14,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:14,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:14,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:14,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:14,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:14,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:14,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:14,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:14,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:25:14,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:14,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:14,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:14,766 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:14,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:14,767 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:14,767 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:14,767 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:14,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:14,771 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:14,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:14,772 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:14,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:14,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:14,772 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:14,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:14,774 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:25:14,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:14,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:14,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:14,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:14,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:14,776 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:25:14,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:14,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:14,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:14,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:14,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:14,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:14,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:14,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:14,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:14,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:14,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:14,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:14,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:14,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:14,782 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_42ebd456-27f8-4568-8be0-bb9f65ed22f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2021-10-11 02:25:15,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:15,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:15,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:15,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:15,083 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:15,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2021-10-11 02:25:15,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/data/8c6d223ec/d92550dbd2f74910b244f31c2296e0d3/FLAGd710ab4ed [2021-10-11 02:25:15,585 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:15,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2021-10-11 02:25:15,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/data/8c6d223ec/d92550dbd2f74910b244f31c2296e0d3/FLAGd710ab4ed [2021-10-11 02:25:15,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/data/8c6d223ec/d92550dbd2f74910b244f31c2296e0d3 [2021-10-11 02:25:15,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:15,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:15,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:15,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:16,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:16,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:15" (1/1) ... [2021-10-11 02:25:16,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49770268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16, skipping insertion in model container [2021-10-11 02:25:16,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:15" (1/1) ... [2021-10-11 02:25:16,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:16,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:16,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:16,215 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:16,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:16,243 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:16,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16 WrapperNode [2021-10-11 02:25:16,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:16,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:16,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:16,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:16,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:16,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:16,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:16,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:16,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... [2021-10-11 02:25:16,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:16,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:16,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:16,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:16,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/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 02:25:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:16,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:16,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:16,718 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:16,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:16 BoogieIcfgContainer [2021-10-11 02:25:16,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:16,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:16,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:16,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:16,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:15" (1/3) ... [2021-10-11 02:25:16,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddca225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:16, skipping insertion in model container [2021-10-11 02:25:16,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:16" (2/3) ... [2021-10-11 02:25:16,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddca225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:16, skipping insertion in model container [2021-10-11 02:25:16,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:16" (3/3) ... [2021-10-11 02:25:16,734 INFO L111 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2021-10-11 02:25:16,754 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:16,759 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:25:16,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:25:16,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:16,795 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:16,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:16,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:16,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:16,796 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:16,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:16,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:25:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:25:16,816 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:16,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:25:16,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-11 02:25:16,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:16,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186659822] [2021-10-11 02:25:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:17,004 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 02:25:17,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186659822] [2021-10-11 02:25:17,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:17,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:17,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511273623] [2021-10-11 02:25:17,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:17,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:17,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:17,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:17,029 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2021-10-11 02:25:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:17,082 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-11 02:25:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:17,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2021-10-11 02:25:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:17,093 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:25:17,108 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:25:17,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:25:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:25:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:25:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:25:17,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2021-10-11 02:25:17,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:17,171 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:25:17,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:25:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:25:17,172 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:17,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:25:17,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:17,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:17,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:17,174 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-10-11 02:25:17,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:17,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761249797] [2021-10-11 02:25:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:17,277 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 02:25:17,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761249797] [2021-10-11 02:25:17,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:17,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:17,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518123995] [2021-10-11 02:25:17,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:17,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:17,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:17,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:17,282 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2021-10-11 02:25:17,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:17,318 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-11 02:25:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:17,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:25:17,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:17,319 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:25:17,320 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:25:17,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:25:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-10-11 02:25:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:25:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-11 02:25:17,325 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-10-11 02:25:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:17,326 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-11 02:25:17,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-11 02:25:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:25:17,327 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:17,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:25:17,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:17,327 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:17,329 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-11 02:25:17,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:17,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36962360] [2021-10-11 02:25:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:17,371 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 02:25:17,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36962360] [2021-10-11 02:25:17,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:17,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:17,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086460012] [2021-10-11 02:25:17,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:17,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:17,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:17,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:17,374 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2021-10-11 02:25:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:17,394 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-11 02:25:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:17,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:25:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:17,396 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:25:17,396 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:25:17,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:25:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:25:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:25:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-11 02:25:17,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-10-11 02:25:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:17,400 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-11 02:25:17,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-11 02:25:17,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:25:17,401 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:17,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-11 02:25:17,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:17,402 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:17,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:17,403 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-10-11 02:25:17,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:17,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613888990] [2021-10-11 02:25:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:17,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613888990] [2021-10-11 02:25:17,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143722176] [2021-10-11 02:25:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/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 02:25:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:17,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:25:17,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:17,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:17,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [485691457] [2021-10-11 02:25:17,739 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:25:17,739 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:17,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:17,749 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:17,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:20,065 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:20,311 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 22 [2021-10-11 02:25:20,935 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 31 [2021-10-11 02:25:20,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:20,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:20,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-10-11 02:25:20,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282446161] [2021-10-11 02:25:20,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:25:20,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:20,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:25:20,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:25:20,966 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2021-10-11 02:25:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:21,049 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-11 02:25:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:25:21,050 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2021-10-11 02:25:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:21,051 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:25:21,051 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:25:21,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:25:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:25:21,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-11 02:25:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:25:21,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-11 02:25:21,057 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2021-10-11 02:25:21,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:21,058 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-11 02:25:21,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:25:21,058 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-11 02:25:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:25:21,059 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:21,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-11 02:25:21,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-11 02:25:21,284 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:21,285 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2021-10-11 02:25:21,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:21,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692706153] [2021-10-11 02:25:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692706153] [2021-10-11 02:25:21,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816067547] [2021-10-11 02:25:21,459 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_42ebd456-27f8-4568-8be0-bb9f65ed22f4/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 02:25:21,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-11 02:25:21,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:25:21,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:25:21,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:21,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:21,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1168158075] [2021-10-11 02:25:21,765 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:25:21,766 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:21,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:21,767 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:21,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:22,900 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:23,166 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 22 [2021-10-11 02:25:23,533 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2021-10-11 02:25:23,838 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 31 [2021-10-11 02:25:23,876 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:23,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:23,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2021-10-11 02:25:23,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967134560] [2021-10-11 02:25:23,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-10-11 02:25:23,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:23,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-11 02:25:23,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:25:23,881 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 22 states. [2021-10-11 02:25:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:24,136 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-10-11 02:25:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-11 02:25:24,139 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2021-10-11 02:25:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:24,141 INFO L225 Difference]: With dead ends: 58 [2021-10-11 02:25:24,141 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:25:24,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2021-10-11 02:25:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:25:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-10-11 02:25:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 02:25:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-11 02:25:24,149 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2021-10-11 02:25:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:24,150 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-11 02:25:24,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-10-11 02:25:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-11 02:25:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-11 02:25:24,152 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:24,152 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-10-11 02:25:24,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-11 02:25:24,368 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:24,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2021-10-11 02:25:24,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:24,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589691216] [2021-10-11 02:25:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:24,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589691216] [2021-10-11 02:25:24,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461488498] [2021-10-11 02:25:24,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:24,877 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:25:24,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:25:24,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-11 02:25:24,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:24,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:25,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1944328806] [2021-10-11 02:25:25,658 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:25:25,658 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:25,658 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:25,659 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:25,659 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:26,744 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:27,002 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 22 [2021-10-11 02:25:27,614 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 31 [2021-10-11 02:25:27,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:27,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:27,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2021-10-11 02:25:27,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112805321] [2021-10-11 02:25:27,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-10-11 02:25:27,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-11 02:25:27,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-10-11 02:25:27,657 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 46 states. [2021-10-11 02:25:28,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:28,375 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2021-10-11 02:25:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-11 02:25:28,377 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 55 [2021-10-11 02:25:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:28,379 INFO L225 Difference]: With dead ends: 118 [2021-10-11 02:25:28,379 INFO L226 Difference]: Without dead ends: 117 [2021-10-11 02:25:28,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1351, Invalid=4051, Unknown=0, NotChecked=0, Total=5402 [2021-10-11 02:25:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-11 02:25:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-10-11 02:25:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-10-11 02:25:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-10-11 02:25:28,395 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2021-10-11 02:25:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:28,395 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-10-11 02:25:28,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-10-11 02:25:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-10-11 02:25:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-11 02:25:28,400 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:28,400 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2021-10-11 02:25:28,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-11 02:25:28,617 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 4 times [2021-10-11 02:25:28,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:28,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652838550] [2021-10-11 02:25:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:29,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652838550] [2021-10-11 02:25:29,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356887153] [2021-10-11 02:25:29,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-11 02:25:29,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:30,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:32,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1309401726] [2021-10-11 02:25:32,638 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:25:32,638 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:32,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:32,639 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:32,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:33,897 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:34,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:34,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:34,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 92 [2021-10-11 02:25:34,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641890416] [2021-10-11 02:25:34,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-10-11 02:25:34,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:34,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-11 02:25:34,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2274, Invalid=7626, Unknown=0, NotChecked=0, Total=9900 [2021-10-11 02:25:34,608 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 94 states. [2021-10-11 02:25:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:36,911 INFO L93 Difference]: Finished difference Result 238 states and 261 transitions. [2021-10-11 02:25:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-11 02:25:36,912 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 115 [2021-10-11 02:25:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:36,915 INFO L225 Difference]: With dead ends: 238 [2021-10-11 02:25:36,915 INFO L226 Difference]: Without dead ends: 237 [2021-10-11 02:25:36,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4908 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5563, Invalid=15607, Unknown=0, NotChecked=0, Total=21170 [2021-10-11 02:25:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-11 02:25:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2021-10-11 02:25:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-10-11 02:25:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-10-11 02:25:36,943 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2021-10-11 02:25:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:36,944 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-10-11 02:25:36,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2021-10-11 02:25:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-10-11 02:25:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-11 02:25:36,949 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:36,949 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2021-10-11 02:25:37,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:37,153 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1923709923, now seen corresponding path program 5 times [2021-10-11 02:25:37,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:37,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446215866] [2021-10-11 02:25:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 4711 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-10-11 02:25:40,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446215866] [2021-10-11 02:25:40,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:40,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-10-11 02:25:40,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631740342] [2021-10-11 02:25:40,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-10-11 02:25:40,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:40,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-11 02:25:40,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2021-10-11 02:25:40,801 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 63 states. [2021-10-11 02:25:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:41,046 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2021-10-11 02:25:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-11 02:25:41,047 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 235 [2021-10-11 02:25:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:41,048 INFO L225 Difference]: With dead ends: 236 [2021-10-11 02:25:41,048 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:41,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2021-10-11 02:25:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:41,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2021-10-11 02:25:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:41,052 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:41,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2021-10-11 02:25:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:41,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:41,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-10-11 02:25:41,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:41,591 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 155 [2021-10-11 02:25:41,594 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2021-10-11 02:25:41,594 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:41,594 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2021-10-11 02:25:41,594 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-11 02:25:41,595 INFO L262 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2021-10-11 02:25:41,595 INFO L258 CegarLoopResult]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and (<= ULTIMATE.start_mlog_~x 1048575) .cse0 (<= ULTIMATE.start_mlog_~res~0 11)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 9) (<= ULTIMATE.start_mlog_~x 4194303)) (and .cse0 (<= ULTIMATE.start_mlog_~x 7) (<= ULTIMATE.start_mlog_~res~0 2147483629)) (and (<= ULTIMATE.start_mlog_~x 536870911) .cse0 (<= ULTIMATE.start_mlog_~res~0 2)) (and .cse0 (<= ULTIMATE.start_mlog_~x 8388607) (<= ULTIMATE.start_mlog_~res~0 8)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 2147483630) (<= ULTIMATE.start_mlog_~x 3)) (and (<= ULTIMATE.start_mlog_~res~0 14) (<= ULTIMATE.start_mlog_~x 131071) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~x 1) (<= ULTIMATE.start_mlog_~res~0 2147483631)) (and .cse0 (<= ULTIMATE.start_mlog_~x 31) (<= ULTIMATE.start_mlog_~res~0 2147483627)) (and .cse0 (<= ULTIMATE.start_mlog_~x 67108863) (<= ULTIMATE.start_mlog_~res~0 5)) (and (<= ULTIMATE.start_mlog_~res~0 1) .cse0 (<= ULTIMATE.start_mlog_~x 1073741823)) (and .cse0 (<= ULTIMATE.start_mlog_~x 268435455) (<= ULTIMATE.start_mlog_~res~0 3)) (and (<= ULTIMATE.start_mlog_~x 2097151) (<= ULTIMATE.start_mlog_~res~0 10) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 17) (<= ULTIMATE.start_mlog_~x 16383)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 2147483628) (<= ULTIMATE.start_mlog_~x 15)) (and (<= ULTIMATE.start_mlog_~res~0 22) .cse0 (<= ULTIMATE.start_mlog_~x 511)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 6) (<= ULTIMATE.start_mlog_~x 33554431)) (and (<= ULTIMATE.start_mlog_~x 262143) .cse0 (<= ULTIMATE.start_mlog_~res~0 13)) (and (<= ULTIMATE.start_mlog_~res~0 21) .cse0 (<= ULTIMATE.start_mlog_~x 1023)) (and (<= ULTIMATE.start_mlog_~res~0 19) .cse0 (<= ULTIMATE.start_mlog_~x 4095)) (and (<= ULTIMATE.start_mlog_~res~0 2147483625) .cse0 (<= ULTIMATE.start_mlog_~x 127)) (and (<= ULTIMATE.start_mlog_~res~0 2147483624) .cse0 (<= ULTIMATE.start_mlog_~x 255)) (and .cse0 (<= ULTIMATE.start_mlog_~x 2147483647) (<= ULTIMATE.start_mlog_~res~0 0)) (and (<= ULTIMATE.start_mlog_~res~0 2147483626) (<= ULTIMATE.start_mlog_~x 63) .cse0) (and (<= ULTIMATE.start_mlog_~res~0 7) .cse0 (<= ULTIMATE.start_mlog_~x 16777215)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 12) (<= ULTIMATE.start_mlog_~x 524287)) (and (<= ULTIMATE.start_mlog_~res~0 15) .cse0 (<= ULTIMATE.start_mlog_~x 65535)) (and (<= ULTIMATE.start_mlog_~res~0 16) .cse0 (<= ULTIMATE.start_mlog_~x 32767)) (and (<= ULTIMATE.start_mlog_~x 8191) .cse0 (<= ULTIMATE.start_mlog_~res~0 18)) (and (<= ULTIMATE.start_mlog_~res~0 20) .cse0 (<= ULTIMATE.start_mlog_~x 2047)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 4) (<= ULTIMATE.start_mlog_~x 134217727)))) [2021-10-11 02:25:41,595 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2021-10-11 02:25:41,595 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2021-10-11 02:25:41,596 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:41,596 INFO L262 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-11 02:25:41,596 INFO L262 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2021-10-11 02:25:41,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:41 BoogieIcfgContainer [2021-10-11 02:25:41,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:41,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:41,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:41,625 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:41,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:16" (3/4) ... [2021-10-11 02:25:41,628 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:41,640 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:25:41,643 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:25:41,644 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:41,692 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ebd456-27f8-4568-8be0-bb9f65ed22f4/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:41,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:41,693 INFO L168 Benchmark]: Toolchain (without parser) took 25698.74 ms. Allocated memory was 86.0 MB in the beginning and 327.2 MB in the end (delta: 241.2 MB). Free memory was 47.9 MB in the beginning and 226.5 MB in the end (delta: -178.6 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:41,694 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:41,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.40 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 84.7 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:41,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.15 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:41,697 INFO L168 Benchmark]: Boogie Preprocessor took 44.40 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 82.3 MB in the end (delta: 848.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:41,704 INFO L168 Benchmark]: RCFGBuilder took 371.09 ms. Allocated memory is still 107.0 MB. Free memory was 82.3 MB in the beginning and 70.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:41,705 INFO L168 Benchmark]: TraceAbstraction took 24899.06 ms. Allocated memory was 107.0 MB in the beginning and 327.2 MB in the end (delta: 220.2 MB). Free memory was 70.1 MB in the beginning and 229.6 MB in the end (delta: -159.5 MB). Peak memory consumption was 181.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:41,707 INFO L168 Benchmark]: Witness Printer took 67.92 ms. Allocated memory is still 327.2 MB. Free memory was 229.6 MB in the beginning and 226.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:41,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.40 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 84.7 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.15 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.40 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 82.3 MB in the end (delta: 848.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 371.09 ms. Allocated memory is still 107.0 MB. Free memory was 82.3 MB in the beginning and 70.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24899.06 ms. Allocated memory was 107.0 MB in the beginning and 327.2 MB in the end (delta: 220.2 MB). Free memory was 70.1 MB in the beginning and 229.6 MB in the end (delta: -159.5 MB). Peak memory consumption was 181.7 MB. Max. memory is 16.1 GB. * Witness Printer took 67.92 ms. Allocated memory is still 327.2 MB. Free memory was 229.6 MB in the beginning and 226.5 MB in the end (delta: 3.1 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: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: 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: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((x <= 1048575 && 0 <= res) && res <= 11) || ((0 <= res && res <= 9) && x <= 4194303)) || ((0 <= res && x <= 7) && res <= 2147483629)) || ((x <= 536870911 && 0 <= res) && res <= 2)) || ((0 <= res && x <= 8388607) && res <= 8)) || ((0 <= res && res <= 2147483630) && x <= 3)) || ((res <= 14 && x <= 131071) && 0 <= res)) || ((0 <= res && x <= 1) && res <= 2147483631)) || ((0 <= res && x <= 31) && res <= 2147483627)) || ((0 <= res && x <= 67108863) && res <= 5)) || ((res <= 1 && 0 <= res) && x <= 1073741823)) || ((0 <= res && x <= 268435455) && res <= 3)) || ((x <= 2097151 && res <= 10) && 0 <= res)) || ((0 <= res && res <= 17) && x <= 16383)) || ((0 <= res && res <= 2147483628) && x <= 15)) || ((res <= 22 && 0 <= res) && x <= 511)) || ((0 <= res && res <= 6) && x <= 33554431)) || ((x <= 262143 && 0 <= res) && res <= 13)) || ((res <= 21 && 0 <= res) && x <= 1023)) || ((res <= 19 && 0 <= res) && x <= 4095)) || ((res <= 2147483625 && 0 <= res) && x <= 127)) || ((res <= 2147483624 && 0 <= res) && x <= 255)) || ((0 <= res && x <= 2147483647) && res <= 0)) || ((res <= 2147483626 && x <= 63) && 0 <= res)) || ((res <= 7 && 0 <= res) && x <= 16777215)) || ((0 <= res && res <= 12) && x <= 524287)) || ((res <= 15 && 0 <= res) && x <= 65535)) || ((res <= 16 && 0 <= res) && x <= 32767)) || ((x <= 8191 && 0 <= res) && res <= 18)) || ((res <= 20 && 0 <= res) && x <= 2047)) || ((0 <= res && res <= 4) && x <= 134217727) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.2s, OverallIterations: 8, TraceHistogramMax: 47, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 679 SDslu, 331 SDs, 0 SdLazy, 679 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 871 GetRequests, 502 SyntacticMatches, 30 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7041 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred 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, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 32 NumberOfFragments, 311 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 659 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 848 ConstructedInterpolants, 0 QuantifiedInterpolants, 330848 SizeOfPredicates, 41 NumberOfNonLiveVariables, 479 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 5359/10033 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...