./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/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_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d514d33a8e8d6b0824f7f820c453be18b3da50b0 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:22:04,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:04,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:04,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:04,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:04,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:04,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:04,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:04,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:04,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:04,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:04,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:04,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:04,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:04,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:04,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:04,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:04,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:04,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:04,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:04,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:04,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:04,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:04,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:04,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:04,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:04,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:04,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:04,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:04,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:04,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:04,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:04,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:04,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:04,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:04,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:04,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:04,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:04,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:04,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:04,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:04,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:04,752 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:04,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:04,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:04,753 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:04,753 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:04,753 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:04,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:04,754 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:04,754 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:04,754 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:04,754 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:04,755 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:04,755 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:04,755 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:04,755 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:04,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:04,756 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:04,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:04,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:04,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:04,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:04,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:04,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:04,758 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:04,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:04,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:04,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:04,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:04,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:04,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:04,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:04,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:04,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:04,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:04,760 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:04,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:04,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:04,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:04,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:04,761 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_bf1c44a2-62f1-4321-89c8-1ef5f789e886/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d514d33a8e8d6b0824f7f820c453be18b3da50b0 [2021-10-11 02:22:05,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:05,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:05,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:05,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:05,072 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:05,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-10-11 02:22:05,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/data/90748fdaa/765d29eae0244083b648a64559ed2943/FLAGf2b0cc47d [2021-10-11 02:22:05,713 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:05,717 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-10-11 02:22:05,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/data/90748fdaa/765d29eae0244083b648a64559ed2943/FLAGf2b0cc47d [2021-10-11 02:22:06,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/data/90748fdaa/765d29eae0244083b648a64559ed2943 [2021-10-11 02:22:06,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:06,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:06,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:06,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:06,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:06,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50958db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06, skipping insertion in model container [2021-10-11 02:22:06,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:06,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:06,326 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c[490,503] [2021-10-11 02:22:06,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:06,378 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:06,396 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c[490,503] [2021-10-11 02:22:06,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:06,444 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:06,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06 WrapperNode [2021-10-11 02:22:06,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:06,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:06,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:06,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:06,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:06,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:06,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:06,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:06,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... [2021-10-11 02:22:06,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:06,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:06,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:06,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:06,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/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 02:22:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:15,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:15,524 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 02:22:15,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:15 BoogieIcfgContainer [2021-10-11 02:22:15,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:15,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:15,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:15,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:15,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:06" (1/3) ... [2021-10-11 02:22:15,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:15, skipping insertion in model container [2021-10-11 02:22:15,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:06" (2/3) ... [2021-10-11 02:22:15,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:15, skipping insertion in model container [2021-10-11 02:22:15,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:15" (3/3) ... [2021-10-11 02:22:15,536 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2021-10-11 02:22:15,550 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:15,554 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:22:15,565 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:22:15,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:15,590 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:15,590 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:15,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:15,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:15,591 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:15,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:15,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-10-11 02:22:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:22:15,611 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:15,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:22:15,612 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash 189711168, now seen corresponding path program 1 times [2021-10-11 02:22:15,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:15,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762705971] [2021-10-11 02:22:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:15,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:15,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971890580] [2021-10-11 02:22:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/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 02:22:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:15,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:22:15,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:15,847 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 02:22:15,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:15,855 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 02:22:15,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762705971] [2021-10-11 02:22:15,856 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:15,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971890580] [2021-10-11 02:22:15,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:15,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-11 02:22:15,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315403895] [2021-10-11 02:22:15,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:22:15,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:15,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:22:15,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:15,889 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2021-10-11 02:22:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:15,913 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-10-11 02:22:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:22:15,914 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:22:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:15,926 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:22:15,926 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:22:15,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:22:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:22:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:22:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-11 02:22:15,971 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2021-10-11 02:22:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:15,972 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-11 02:22:15,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:22:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-11 02:22:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:22:15,973 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:15,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:22:16,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:22:16,186 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1480645745, now seen corresponding path program 1 times [2021-10-11 02:22:16,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:16,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139968513] [2021-10-11 02:22:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:16,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:16,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7819547] [2021-10-11 02:22:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/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 02:22:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:16,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:16,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:16,333 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 02:22:16,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:16,347 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 02:22:16,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139968513] [2021-10-11 02:22:16,349 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:16,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7819547] [2021-10-11 02:22:16,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:16,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-11 02:22:16,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812199298] [2021-10-11 02:22:16,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:16,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:16,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:16,357 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2021-10-11 02:22:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:16,442 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-10-11 02:22:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:16,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:22:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:16,445 INFO L225 Difference]: With dead ends: 57 [2021-10-11 02:22:16,445 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:22:16,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 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 02:22:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:22:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-10-11 02:22:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:22:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-11 02:22:16,452 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2021-10-11 02:22:16,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:16,453 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-11 02:22:16,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-11 02:22:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:22:16,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:16,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:22:16,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:16,655 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:16,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1480649719, now seen corresponding path program 1 times [2021-10-11 02:22:16,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:16,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155477863] [2021-10-11 02:22:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:16,662 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:16,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989767054] [2021-10-11 02:22:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/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 02:22:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:16,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:22:16,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:16,794 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 02:22:16,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:16,833 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 02:22:16,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155477863] [2021-10-11 02:22:16,834 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:16,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989767054] [2021-10-11 02:22:16,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:16,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:22:16,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409657707] [2021-10-11 02:22:16,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:22:16,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:16,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:22:16,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:16,836 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-10-11 02:22:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:21,248 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-10-11 02:22:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:22:21,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2021-10-11 02:22:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:21,251 INFO L225 Difference]: With dead ends: 99 [2021-10-11 02:22:21,251 INFO L226 Difference]: Without dead ends: 97 [2021-10-11 02:22:21,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:22:21,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-11 02:22:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2021-10-11 02:22:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 02:22:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-10-11 02:22:21,263 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2021-10-11 02:22:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:21,263 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-10-11 02:22:21,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:22:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-10-11 02:22:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:22:21,264 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:21,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:21,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:21,484 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:21,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:21,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1270362266, now seen corresponding path program 1 times [2021-10-11 02:22:21,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:21,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554036719] [2021-10-11 02:22:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:21,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:21,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895116423] [2021-10-11 02:22:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/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 02:22:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:21,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:22:21,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:21,643 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 02:22:21,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:21,691 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 02:22:21,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554036719] [2021-10-11 02:22:21,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:21,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895116423] [2021-10-11 02:22:21,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:21,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:22:21,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207043594] [2021-10-11 02:22:21,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:22:21,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:21,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:22:21,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:21,693 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 6 states. [2021-10-11 02:22:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:21,835 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-11 02:22:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:21,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-10-11 02:22:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:21,839 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:22:21,839 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:22:21,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:22:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:22:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-10-11 02:22:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:22:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-10-11 02:22:21,867 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 8 [2021-10-11 02:22:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:21,867 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-11 02:22:21,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:22:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-10-11 02:22:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:22:21,867 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:21,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:22,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:22,068 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:22,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1047583197, now seen corresponding path program 1 times [2021-10-11 02:22:22,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:22,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773178882] [2021-10-11 02:22:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:22,073 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:22,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354277866] [2021-10-11 02:22:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:22,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:22:22,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:22,206 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 02:22:22,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:22,246 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 02:22:22,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773178882] [2021-10-11 02:22:22,246 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:22,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354277866] [2021-10-11 02:22:22,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:22,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:22:22,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232853205] [2021-10-11 02:22:22,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:22:22,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:22,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:22:22,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:22,251 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 6 states. [2021-10-11 02:22:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:22,389 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-10-11 02:22:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:22,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:22:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:22,391 INFO L225 Difference]: With dead ends: 60 [2021-10-11 02:22:22,391 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 02:22:22,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:22:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 02:22:22,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2021-10-11 02:22:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:22:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2021-10-11 02:22:22,400 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 10 [2021-10-11 02:22:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:22,401 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2021-10-11 02:22:22,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:22:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2021-10-11 02:22:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:22:22,401 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:22,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:22,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:22,618 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:22,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1705263040, now seen corresponding path program 1 times [2021-10-11 02:22:22,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:22,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127708721] [2021-10-11 02:22:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:22,622 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:22,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816193873] [2021-10-11 02:22:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:22,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 02:22:22,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:24,738 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-11 02:22:28,864 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2021-10-11 02:22:28,887 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 02:22:28,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:28,942 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2021-10-11 02:22:28,943 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:22:29,016 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 02:22:29,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127708721] [2021-10-11 02:22:29,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:29,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816193873] [2021-10-11 02:22:29,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:29,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:22:29,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474632694] [2021-10-11 02:22:29,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:22:29,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:29,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:22:29,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:22:29,019 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2021-10-11 02:22:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:29,022 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-10-11 02:22:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:22:29,022 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-10-11 02:22:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:29,023 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:22:29,023 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:29,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:22:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:29,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-11 02:22:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:29,025 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:29,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:22:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:29,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:29,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:29,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:29,258 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:22:29,258 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:22:29,259 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2021-10-11 02:22:29,259 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:22:29,259 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2021-10-11 02:22:29,259 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:22:29,259 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2021-10-11 02:22:29,259 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:22:29,260 INFO L258 CegarLoopResult]: At program point L11-11(lines 52 53) the Hoare annotation is: false [2021-10-11 02:22:29,260 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:22:29,260 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:22:29,260 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:29,260 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2021-10-11 02:22:29,260 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:22:29,260 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-11 02:22:29,261 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:22:29,261 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:22:29,261 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:22:29,261 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:22:29,261 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:22:29,261 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:22:29,261 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:22:29,262 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2021-10-11 02:22:29,262 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-10-11 02:22:29,262 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:22:29,262 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:22:29,262 INFO L258 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2021-10-11 02:22:29,262 INFO L262 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-10-11 02:22:29,262 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:29,263 INFO L262 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-11 02:22:29,263 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:22:29,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:29 BoogieIcfgContainer [2021-10-11 02:22:29,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:29,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:29,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:29,273 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:29,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:15" (3/4) ... [2021-10-11 02:22:29,276 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:29,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-10-11 02:22:29,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:22:29,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:22:29,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:29,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf1c44a2-62f1-4321-89c8-1ef5f789e886/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:29,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:29,345 INFO L168 Benchmark]: Toolchain (without parser) took 23272.60 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 72.3 MB in the beginning and 100.8 MB in the end (delta: -28.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:29,346 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 59.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:29,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.85 ms. Allocated memory is still 104.9 MB. Free memory was 72.2 MB in the beginning and 79.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:29,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.57 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 77.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:29,347 INFO L168 Benchmark]: Boogie Preprocessor took 53.48 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 76.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:29,348 INFO L168 Benchmark]: RCFGBuilder took 8959.39 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 76.4 MB in the beginning and 107.4 MB in the end (delta: -31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:29,348 INFO L168 Benchmark]: TraceAbstraction took 13743.63 ms. Allocated memory is still 138.4 MB. Free memory was 107.4 MB in the beginning and 105.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:29,349 INFO L168 Benchmark]: Witness Printer took 72.03 ms. Allocated memory is still 138.4 MB. Free memory was 105.0 MB in the beginning and 100.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:29,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 59.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.85 ms. Allocated memory is still 104.9 MB. Free memory was 72.2 MB in the beginning and 79.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.57 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 77.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.48 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 76.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8959.39 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 76.4 MB in the beginning and 107.4 MB in the end (delta: -31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13743.63 ms. Allocated memory is still 138.4 MB. Free memory was 107.4 MB in the beginning and 105.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 72.03 ms. Allocated memory is still 138.4 MB. Free memory was 105.0 MB in the beginning and 100.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 166 SDslu, 157 SDs, 0 SdLazy, 167 SolverSat, 79 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, 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, 6 MinimizatonAttempts, 85 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 6538 SizeOfPredicates, 43 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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...