./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs --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 29123ed479a06938c1b58bc0ee2ae38219e9e012922d3ca9fba5679eb1736558 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:01:34,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:01:34,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:01:34,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:01:34,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:01:34,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:01:34,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:01:34,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:01:34,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:01:34,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:01:34,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:01:34,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:01:34,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:01:34,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:01:34,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:01:34,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:01:34,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:01:34,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:01:34,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:01:34,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:01:34,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:01:34,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:01:34,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:01:34,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:01:34,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:01:34,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:01:34,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:01:34,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:01:34,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:01:34,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:01:34,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:01:34,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:01:34,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:01:34,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:01:34,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:01:34,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:01:34,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:01:34,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:01:34,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:01:34,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:01:34,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:01:34,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:01:34,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:01:34,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:01:34,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:01:34,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:01:34,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:01:34,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:01:34,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:01:34,247 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:01:34,247 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:01:34,247 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:01:34,248 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:01:34,248 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:01:34,248 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:01:34,248 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:01:34,249 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:01:34,249 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:01:34,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:01:34,250 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:01:34,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:01:34,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:01:34,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:01:34,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:01:34,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:01:34,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:01:34,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:01:34,251 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:01:34,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:01:34,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:01:34,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:01:34,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:01:34,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:01:34,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:34,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:01:34,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:01:34,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:01:34,253 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:01:34,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:01:34,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:01:34,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:01:34,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:01:34,254 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_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29123ed479a06938c1b58bc0ee2ae38219e9e012922d3ca9fba5679eb1736558 [2021-11-19 15:01:34,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:01:34,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:01:34,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:01:34,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:01:34,531 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:01:34,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-11-19 15:01:34,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/data/e88f56320/84ec065f1d0b45aaa8005d55bfd340e2/FLAGc0a2140bb [2021-11-19 15:01:35,015 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:01:35,016 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-11-19 15:01:35,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/data/e88f56320/84ec065f1d0b45aaa8005d55bfd340e2/FLAGc0a2140bb [2021-11-19 15:01:35,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/data/e88f56320/84ec065f1d0b45aaa8005d55bfd340e2 [2021-11-19 15:01:35,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:01:35,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:01:35,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:35,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:01:35,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:01:35,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1447d0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35, skipping insertion in model container [2021-11-19 15:01:35,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:01:35,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:35,619 WARN L230 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_36e75529-691f-4dff-ab42-e9624435a8db/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2021-11-19 15:01:35,638 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:35,647 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:01:35,659 WARN L230 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_36e75529-691f-4dff-ab42-e9624435a8db/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2021-11-19 15:01:35,670 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:35,683 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:01:35,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35 WrapperNode [2021-11-19 15:01:35,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:35,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:35,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:01:35,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:01:35,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,720 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-11-19 15:01:35,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:35,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:01:35,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:01:35,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:01:35,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:01:35,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:01:35,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:01:35,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:01:35,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (1/1) ... [2021-11-19 15:01:35,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:35,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:01:35,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:01:35,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:01:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:01:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:01:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:01:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 15:01:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:01:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:01:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:01:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:01:35,903 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:01:35,905 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:01:36,025 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:01:36,049 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:01:36,062 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 15:01:36,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:36 BoogieIcfgContainer [2021-11-19 15:01:36,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:01:36,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:01:36,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:01:36,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:01:36,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:01:35" (1/3) ... [2021-11-19 15:01:36,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4906ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:36, skipping insertion in model container [2021-11-19 15:01:36,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:35" (2/3) ... [2021-11-19 15:01:36,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4906ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:36, skipping insertion in model container [2021-11-19 15:01:36,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:36" (3/3) ... [2021-11-19 15:01:36,074 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound2.c [2021-11-19 15:01:36,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:01:36,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:01:36,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:01:36,137 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:01:36,137 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:01:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 15:01:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:01:36,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:36,175 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:36,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1333631252, now seen corresponding path program 1 times [2021-11-19 15:01:36,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:01:36,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353205639] [2021-11-19 15:01:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:36,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:01:36,353 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:01:36,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736523000] [2021-11-19 15:01:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:36,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:01:36,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:01:36,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:01:36,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 15:01:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:36,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 15:01:36,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:45,452 WARN L227 SmtUtils]: Spent 8.69s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 15:01:53,885 WARN L227 SmtUtils]: Spent 8.41s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 15:02:02,542 WARN L227 SmtUtils]: Spent 8.61s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 15:02:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:02:03,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:02:03,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:02:03,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353205639] [2021-11-19 15:02:03,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:02:03,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736523000] [2021-11-19 15:02:03,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736523000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:03,273 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:03,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 5] imperfect sequences [] total 11 [2021-11-19 15:02:03,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572807476] [2021-11-19 15:02:03,277 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:03,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:02:03,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:02:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:02:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:02:03,311 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 15:02:08,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-19 15:02:17,423 WARN L227 SmtUtils]: Spent 9.33s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 15:02:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:17,491 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2021-11-19 15:02:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:02:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 20 [2021-11-19 15:02:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:17,499 INFO L225 Difference]: With dead ends: 37 [2021-11-19 15:02:17,500 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 15:02:17,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:02:17,507 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:17,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 50 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 15:02:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 15:02:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 15:02:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 15:02:17,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-11-19 15:02:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:17,541 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 15:02:17,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 15:02:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 15:02:17,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 15:02:17,544 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 15:02:17,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:17,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-19 15:02:17,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 15:02:34,997 WARN L227 SmtUtils]: Spent 17.15s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-19 15:02:35,131 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0)))) [2021-11-19 15:02:35,131 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2021-11-19 15:02:35,131 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-19 15:02:35,131 INFO L858 garLoopResultBuilder]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-11-19 15:02:35,132 INFO L854 garLoopResultBuilder]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0)))) [2021-11-19 15:02:35,132 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 40 46) the Hoare annotation is: false [2021-11-19 15:02:35,132 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0) (<= 0 |ULTIMATE.start_main_~A~0#1|)))) [2021-11-19 15:02:35,133 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2021-11-19 15:02:35,133 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 15:02:35,133 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-11-19 15:02:35,133 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0)))) [2021-11-19 15:02:35,134 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: false [2021-11-19 15:02:35,134 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2021-11-19 15:02:35,134 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2021-11-19 15:02:35,134 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2021-11-19 15:02:35,134 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 15:02:35,135 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~A~0#1| 2) (<= 0 |ULTIMATE.start_main_~A~0#1|)) [2021-11-19 15:02:35,135 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 2) (<= |ULTIMATE.start_main_~A~0#1| 2) (<= 0 |ULTIMATE.start_main_~A~0#1|)) [2021-11-19 15:02:35,135 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 2)) [2021-11-19 15:02:35,135 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-19 15:02:35,136 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-19 15:02:35,136 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-11-19 15:02:35,136 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-19 15:02:35,136 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-19 15:02:35,137 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-11-19 15:02:35,137 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-11-19 15:02:35,137 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-19 15:02:35,141 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 15:02:35,142 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 15:02:35,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 03:02:35 BoogieIcfgContainer [2021-11-19 15:02:35,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 15:02:35,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 15:02:35,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 15:02:35,160 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 15:02:35,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:36" (3/4) ... [2021-11-19 15:02:35,164 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 15:02:35,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-19 15:02:35,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-19 15:02:35,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-19 15:02:35,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-19 15:02:35,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 15:02:35,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 15:02:35,213 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 15:02:35,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 15:02:35,214 INFO L158 Benchmark]: Toolchain (without parser) took 59795.00ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 47.6MB in the beginning and 56.3MB in the end (delta: -8.7MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,214 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:02:35,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.08ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 47.4MB in the beginning and 76.7MB in the end (delta: -29.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.31ms. Allocated memory is still 100.7MB. Free memory was 76.7MB in the beginning and 75.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,216 INFO L158 Benchmark]: Boogie Preprocessor took 22.58ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 74.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,217 INFO L158 Benchmark]: RCFGBuilder took 320.94ms. Allocated memory is still 100.7MB. Free memory was 74.0MB in the beginning and 63.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,217 INFO L158 Benchmark]: TraceAbstraction took 59092.07ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 59.5MB in the end (delta: 3.2MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,218 INFO L158 Benchmark]: Witness Printer took 53.47ms. Allocated memory is still 100.7MB. Free memory was 59.5MB in the beginning and 56.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 15:02:35,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.08ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 47.4MB in the beginning and 76.7MB in the end (delta: -29.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.31ms. Allocated memory is still 100.7MB. Free memory was 76.7MB in the beginning and 75.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.58ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 74.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.94ms. Allocated memory is still 100.7MB. Free memory was 74.0MB in the beginning and 63.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 59092.07ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 59.5MB in the end (delta: 3.2MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Witness Printer took 53.47ms. Allocated memory is still 100.7MB. Free memory was 59.5MB in the beginning and 56.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.0s, OverallIterations: 1, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 17.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 9 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 21 PreInvPairs, 25 NumberOfFragments, 316 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 17.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 26.8s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 270 SizeOfPredicates, 6 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 24/24 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((u + 1) % 2 == 0 && A % 2 == 1) && (-1 + u) / 2 * ((-1 + u) / 2) + 1 < 2 * ((-1 + u) / 2) + A) && R * R + 1 < 2 * R + A) && v == 1) && A <= 2) && A + r == (-1 + u) / 2 * ((-1 + u) / 2) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((u + 1) % 2 == 0 && A % 2 == 1) && (-1 + u) / 2 * ((-1 + u) / 2) + 1 < 2 * ((-1 + u) / 2) + A) && R * R + 1 < 2 * R + A) && v == 1) && A <= 2) && A + r == (-1 + u) / 2 * ((-1 + u) / 2) RESULT: Ultimate proved your program to be correct! [2021-11-19 15:02:35,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e75529-691f-4dff-ab42-e9624435a8db/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE