./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan --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 b16d444b17d990870a86defe9950d11248e76627 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:36:46,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:36:46,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:36:46,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:36:46,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:36:46,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:36:46,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:36:46,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:36:46,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:36:46,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:36:46,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:36:46,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:36:46,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:36:46,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:36:46,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:36:46,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:36:46,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:36:46,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:36:46,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:36:46,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:36:46,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:36:46,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:36:46,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:36:46,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:36:46,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:36:46,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:36:46,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:36:46,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:36:46,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:36:46,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:36:46,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:36:46,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:36:46,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:36:46,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:36:46,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:36:46,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:36:46,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:36:46,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:36:46,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:36:46,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:36:46,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:36:46,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:36:47,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:36:47,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:36:47,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:36:47,018 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:36:47,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:36:47,018 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:36:47,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:36:47,018 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:36:47,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:36:47,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:36:47,019 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:36:47,019 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:36:47,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:36:47,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:36:47,019 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:36:47,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:36:47,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:36:47,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:36:47,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:36:47,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:36:47,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:36:47,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:36:47,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:36:47,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:36:47,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:36:47,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:36:47,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:36:47,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:36:47,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:36:47,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:36:47,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:36:47,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:36:47,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:36:47,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:36:47,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:36:47,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:36:47,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:36:47,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:36:47,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:36:47,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:36:47,026 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-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b16d444b17d990870a86defe9950d11248e76627 [2020-11-28 07:36:47,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:36:47,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:36:47,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:36:47,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:36:47,321 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:36:47,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2020-11-28 07:36:47,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/data/97e416dea/2b2617ddf4564670bfe6690251971cc5/FLAG4a17560c0 [2020-11-28 07:36:47,933 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:36:47,934 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2020-11-28 07:36:47,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/data/97e416dea/2b2617ddf4564670bfe6690251971cc5/FLAG4a17560c0 [2020-11-28 07:36:48,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/data/97e416dea/2b2617ddf4564670bfe6690251971cc5 [2020-11-28 07:36:48,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:36:48,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:36:48,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:36:48,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:36:48,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:36:48,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30002362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48, skipping insertion in model container [2020-11-28 07:36:48,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:36:48,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:36:48,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:36:48,630 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:36:48,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:36:48,693 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:36:48,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48 WrapperNode [2020-11-28 07:36:48,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:36:48,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:36:48,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:36:48,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:36:48,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:36:48,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:36:48,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:36:48,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:36:48,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... [2020-11-28 07:36:48,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:36:48,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:36:48,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:36:48,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:36:48,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/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 [2020-11-28 07:36:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:36:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:36:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:36:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:36:49,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:36:49,588 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-11-28 07:36:49,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:49 BoogieIcfgContainer [2020-11-28 07:36:49,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:36:49,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:36:49,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:36:49,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:36:49,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:36:48" (1/3) ... [2020-11-28 07:36:49,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6ba335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:49, skipping insertion in model container [2020-11-28 07:36:49,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:48" (2/3) ... [2020-11-28 07:36:49,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6ba335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:49, skipping insertion in model container [2020-11-28 07:36:49,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:49" (3/3) ... [2020-11-28 07:36:49,608 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound1.c [2020-11-28 07:36:49,622 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:36:49,627 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 07:36:49,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 07:36:49,670 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:36:49,670 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:36:49,671 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:36:49,671 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:36:49,671 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:36:49,671 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:36:49,672 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:36:49,672 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:36:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-28 07:36:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:36:49,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:49,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:36:49,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:49,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:49,704 INFO L82 PathProgramCache]: Analyzing trace with hash 5669324, now seen corresponding path program 1 times [2020-11-28 07:36:49,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:49,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188482676] [2020-11-28 07:36:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:49,826 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:36:49,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199826075] [2020-11-28 07:36:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/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 [2020-11-28 07:36:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:49,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:36:49,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:50,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:50,099 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:36:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:50,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188482676] [2020-11-28 07:36:50,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:36:50,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199826075] [2020-11-28 07:36:50,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:50,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:36:50,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698816895] [2020-11-28 07:36:50,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:36:50,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:50,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:36:50,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:36:50,170 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2020-11-28 07:36:50,440 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-28 07:36:52,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:52,753 INFO L93 Difference]: Finished difference Result 117 states and 149 transitions. [2020-11-28 07:36:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:36:52,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-28 07:36:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:52,770 INFO L225 Difference]: With dead ends: 117 [2020-11-28 07:36:52,770 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 07:36:52,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:36:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 07:36:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2020-11-28 07:36:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 07:36:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-11-28 07:36:52,820 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 4 [2020-11-28 07:36:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:52,821 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-11-28 07:36:52,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:36:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-11-28 07:36:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:36:52,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:52,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:36:53,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:36:53,049 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:53,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1153440271, now seen corresponding path program 1 times [2020-11-28 07:36:53,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:53,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254056031] [2020-11-28 07:36:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:53,071 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:36:53,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301689120] [2020-11-28 07:36:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/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 [2020-11-28 07:36:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:53,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 07:36:53,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:53,425 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2020-11-28 07:36:53,431 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-11-28 07:36:53,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:36:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:53,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:53,490 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:36:53,543 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:36:53,543 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:36:56,109 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-28 07:36:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:56,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254056031] [2020-11-28 07:36:56,111 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:36:56,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301689120] [2020-11-28 07:36:56,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:56,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2020-11-28 07:36:56,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072477588] [2020-11-28 07:36:56,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:36:56,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:56,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:36:56,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2020-11-28 07:36:56,114 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 8 states. [2020-11-28 07:36:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:56,498 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-11-28 07:36:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:36:56,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2020-11-28 07:36:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:56,500 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:36:56,501 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 07:36:56,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=30, Invalid=41, Unknown=1, NotChecked=0, Total=72 [2020-11-28 07:36:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 07:36:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-11-28 07:36:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 07:36:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-11-28 07:36:56,524 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 6 [2020-11-28 07:36:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:56,525 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-11-28 07:36:56,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:36:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-11-28 07:36:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:36:56,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:56,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:56,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:56,726 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash 354725650, now seen corresponding path program 1 times [2020-11-28 07:36:56,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:56,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179942938] [2020-11-28 07:36:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:56,754 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:36:56,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529479391] [2020-11-28 07:36:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/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 [2020-11-28 07:36:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:56,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 07:36:56,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:56,984 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2020-11-28 07:36:56,988 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-11-28 07:36:56,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:36:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:57,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:57,059 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:36:57,107 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:36:57,108 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:36:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:57,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179942938] [2020-11-28 07:36:57,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:36:57,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529479391] [2020-11-28 07:36:57,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:57,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2020-11-28 07:36:57,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119735370] [2020-11-28 07:36:57,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:36:57,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:57,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:36:57,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:36:57,357 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 8 states. [2020-11-28 07:36:57,578 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2020-11-28 07:36:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:57,803 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-11-28 07:36:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:36:57,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-28 07:36:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:57,806 INFO L225 Difference]: With dead ends: 64 [2020-11-28 07:36:57,806 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 07:36:57,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:36:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 07:36:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-11-28 07:36:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 07:36:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-11-28 07:36:57,815 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 8 [2020-11-28 07:36:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:57,816 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-11-28 07:36:57,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:36:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-28 07:36:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:36:57,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:57,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:58,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:58,041 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:58,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2018188710, now seen corresponding path program 1 times [2020-11-28 07:36:58,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:58,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013310997] [2020-11-28 07:36:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:58,060 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:36:58,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662729823] [2020-11-28 07:36:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/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 [2020-11-28 07:36:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:58,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:36:58,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:58,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:58,141 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:36:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:58,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013310997] [2020-11-28 07:36:58,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:36:58,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662729823] [2020-11-28 07:36:58,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:58,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:36:58,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562487190] [2020-11-28 07:36:58,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:36:58,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:36:58,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:36:58,157 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 4 states. [2020-11-28 07:36:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:58,226 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-11-28 07:36:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:58,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:36:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:58,227 INFO L225 Difference]: With dead ends: 50 [2020-11-28 07:36:58,227 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:36:58,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:36:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:36:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 07:36:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:36:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-28 07:36:58,231 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2020-11-28 07:36:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:58,232 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-28 07:36:58,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:36:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-28 07:36:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:36:58,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:58,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:58,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:58,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:58,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1845678679, now seen corresponding path program 1 times [2020-11-28 07:36:58,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:58,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187324036] [2020-11-28 07:36:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:58,451 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:36:58,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561113255] [2020-11-28 07:36:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/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 [2020-11-28 07:36:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:36:58,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:58,550 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 07:36:58,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:36:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:58,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:58,611 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:36:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:58,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187324036] [2020-11-28 07:36:58,678 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:36:58,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561113255] [2020-11-28 07:36:58,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:58,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2020-11-28 07:36:58,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022763949] [2020-11-28 07:36:58,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:36:58,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:58,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:36:58,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:36:58,680 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states. [2020-11-28 07:36:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:58,779 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-28 07:36:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:58,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 07:36:58,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:58,783 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:36:58,783 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:36:58,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:36:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:36:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:36:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:36:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:36:58,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 07:36:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:58,785 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:36:58,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:36:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:36:58,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:36:58,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:58,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:36:59,218 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-28 07:36:59,429 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-11-28 07:36:59,737 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 23 [2020-11-28 07:36:59,845 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-11-28 07:37:00,017 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-11-28 07:37:01,534 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-11-28 07:37:01,536 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2020-11-28 07:37:01,536 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:01,536 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:37:01,536 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-28 07:37:01,536 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:37:01,536 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-28 07:37:01,536 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:37:01,537 INFO L270 CegarLoopResult]: At program point L11-5(lines 40 41) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-28 07:37:01,537 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:37:01,537 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) [2020-11-28 07:37:01,537 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:37:01,537 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0))) [2020-11-28 07:37:01,537 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:37:01,537 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) [2020-11-28 07:37:01,537 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:37:01,538 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:01,539 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:01,539 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:01,539 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:01,539 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:37:01,539 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:01,539 INFO L270 CegarLoopResult]: At program point L43-2(lines 35 52) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-28 07:37:01,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:01 BoogieIcfgContainer [2020-11-28 07:37:01,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:01,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:01,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:01,559 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:01,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:49" (3/4) ... [2020-11-28 07:37:01,562 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:01,586 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2020-11-28 07:37:01,587 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:37:01,587 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:37:01,587 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:01,653 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c143cf0d-c37e-44f4-be4b-36d0c4977717/bin/utaipan/witness.graphml [2020-11-28 07:37:01,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:01,658 INFO L168 Benchmark]: Toolchain (without parser) took 13362.41 ms. Allocated memory was 144.7 MB in the beginning and 178.3 MB in the end (delta: 33.6 MB). Free memory was 114.0 MB in the beginning and 75.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:01,658 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:01,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.69 ms. Allocated memory is still 144.7 MB. Free memory was 114.0 MB in the beginning and 118.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:01,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.40 ms. Allocated memory is still 144.7 MB. Free memory was 118.4 MB in the beginning and 116.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:01,660 INFO L168 Benchmark]: Boogie Preprocessor took 43.84 ms. Allocated memory is still 144.7 MB. Free memory was 116.9 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:01,662 INFO L168 Benchmark]: RCFGBuilder took 808.68 ms. Allocated memory is still 144.7 MB. Free memory was 115.3 MB in the beginning and 85.9 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:01,663 INFO L168 Benchmark]: TraceAbstraction took 11964.33 ms. Allocated memory was 144.7 MB in the beginning and 178.3 MB in the end (delta: 33.6 MB). Free memory was 85.4 MB in the beginning and 78.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:01,663 INFO L168 Benchmark]: Witness Printer took 98.47 ms. Allocated memory is still 178.3 MB. Free memory was 78.3 MB in the beginning and 75.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:01,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.69 ms. Allocated memory is still 144.7 MB. Free memory was 114.0 MB in the beginning and 118.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.40 ms. Allocated memory is still 144.7 MB. Free memory was 118.4 MB in the beginning and 116.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.84 ms. Allocated memory is still 144.7 MB. Free memory was 116.9 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 808.68 ms. Allocated memory is still 144.7 MB. Free memory was 115.3 MB in the beginning and 85.9 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11964.33 ms. Allocated memory was 144.7 MB in the beginning and 178.3 MB in the end (delta: 33.6 MB). Free memory was 85.4 MB in the beginning and 78.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. * Witness Printer took 98.47 ms. Allocated memory is still 178.3 MB. Free memory was 78.3 MB in the beginning and 75.1 MB in the end (delta: 3.1 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((b == p * x + r * y && 1 <= y) && y <= 1) && r == 0) && 1 == cond) && s == 1) && 1 <= x) && q == 0) && b == a) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: b == q * x + s * y && a == p * x + r * y - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((b == p * x + r * y && 1 <= y) && y <= 1) && r == 0) && 1 == cond) && s == 1) && 1 <= x) && q == 0) && b == a) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (b == q * x + s * y && a == p * x + r * y) && q * r + 1 == p * s - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((b == p * x + r * y && 1 <= y) && y <= 1) && r == 0) && 1 == cond) && s == 1) && 1 <= x) && q == 0) && b == a) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((b == p * x + r * y && 1 <= y) && y <= 1) && r == 0) && s == 1) && 1 <= x) && q == 0) && b == a) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((b == q * x + s * y && 1 == cond) && q * r + 1 == p * s) && a == p * x + r * y) && b == a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 214 SDslu, 118 SDs, 0 SdLazy, 219 SolverSat, 73 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=1, 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, 5 MinimizatonAttempts, 54 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 20 NumberOfFragments, 227 HoareAnnotationTreeSize, 8 FomulaSimplifications, 121 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 407 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 2 QuantifiedInterpolants, 4512 SizeOfPredicates, 56 NumberOfNonLiveVariables, 364 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...