./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF --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 30423d130febadd361f3e4a853592861e7b12a17e365ee39eab7e3a86989589e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:02,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:02,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:02,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:02,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:02,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:02,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:02,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:02,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:02,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:02,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:02,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:02,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:02,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:02,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:02,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:02,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:02,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:02,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:02,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:02,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:02,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:02,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:02,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:02,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:02,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:02,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:02,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:02,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:02,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:02,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:02,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:02,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:02,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:02,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:02,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:02,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:02,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:02,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:02,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:02,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:02,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:53:02,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:02,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:02,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:02,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:02,388 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:02,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:02,389 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:02,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:53:02,389 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:02,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:02,391 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:53:02,391 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:53:02,391 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:02,392 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:53:02,392 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:53:02,392 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:53:02,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:02,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:53:02,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:53:02,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:53:02,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:02,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:02,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:02,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:02,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:02,396 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:53:02,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:02,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:02,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:02,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:02,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:02,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:02,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:02,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:02,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:02,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:53:02,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:53:02,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:02,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:02,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:02,401 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_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30423d130febadd361f3e4a853592861e7b12a17e365ee39eab7e3a86989589e [2021-11-12 22:53:02,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:02,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:02,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:02,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:02,758 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:02,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-11-12 22:53:02,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/data/b4010a589/a10b290b40ab4d63aa63467034bffcc9/FLAG9924ae6ed [2021-11-12 22:53:03,431 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:03,432 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-11-12 22:53:03,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/data/b4010a589/a10b290b40ab4d63aa63467034bffcc9/FLAG9924ae6ed [2021-11-12 22:53:03,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/data/b4010a589/a10b290b40ab4d63aa63467034bffcc9 [2021-11-12 22:53:03,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:03,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:03,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:03,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:03,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:03,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:03" (1/1) ... [2021-11-12 22:53:03,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6bda3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:03, skipping insertion in model container [2021-11-12 22:53:03,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:03" (1/1) ... [2021-11-12 22:53:03,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:03,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:04,081 WARN L228 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_7f33fce6-04b1-4847-acad-42d14134fef3/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-11-12 22:53:04,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:04,104 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:53:04,118 WARN L228 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_7f33fce6-04b1-4847-acad-42d14134fef3/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-11-12 22:53:04,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:04,137 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:53:04,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04 WrapperNode [2021-11-12 22:53:04,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:04,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:04,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:53:04,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:53:04,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:04,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:53:04,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:53:04,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:53:04,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:53:04,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:53:04,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:53:04,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:53:04,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:04,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:04,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:53:04,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:53:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:53:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:53:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:53:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:53:04,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:04,629 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:53:04,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:04 BoogieIcfgContainer [2021-11-12 22:53:04,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:04,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:04,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:04,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:04,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:53:03" (1/3) ... [2021-11-12 22:53:04,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d1e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:04, skipping insertion in model container [2021-11-12 22:53:04,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (2/3) ... [2021-11-12 22:53:04,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d1e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:04, skipping insertion in model container [2021-11-12 22:53:04,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:04" (3/3) ... [2021-11-12 22:53:04,654 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2021-11-12 22:53:04,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:04,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:04,735 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:04,746 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 [2021-11-12 22:53:04,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:53:04,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-11-12 22:53:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:53:04,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:04,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:53:04,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:04,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-11-12 22:53:04,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:04,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696470382] [2021-11-12 22:53:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:04,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:04,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:53:04,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196193740] [2021-11-12 22:53:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:04,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:04,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:04,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:53:04,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:53:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:05,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:53:05,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:05,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:05,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:05,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696470382] [2021-11-12 22:53:05,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:53:05,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196193740] [2021-11-12 22:53:05,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196193740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:05,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:05,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:53:05,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18250016] [2021-11-12 22:53:05,348 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:05,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:53:05,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:53:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:53:05,423 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-12 22:53:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:05,466 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-11-12 22:53:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:53:05,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2021-11-12 22:53:05,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:05,481 INFO L225 Difference]: With dead ends: 16 [2021-11-12 22:53:05,481 INFO L226 Difference]: Without dead ends: 7 [2021-11-12 22:53:05,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:53:05,492 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:05,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 22.33ms Time] [2021-11-12 22:53:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-12 22:53:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-12 22:53:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-12 22:53:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-12 22:53:05,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-11-12 22:53:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-12 22:53:05,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-12 22:53:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-12 22:53:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:53:05,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:05,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:53:05,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:05,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-12 22:53:05,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:05,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:05,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-11-12 22:53:05,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:05,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732050352] [2021-11-12 22:53:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:05,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:05,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:53:05,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590218480] [2021-11-12 22:53:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:05,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:05,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:05,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:53:05,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:53:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:05,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:53:05,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:06,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:06,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:06,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732050352] [2021-11-12 22:53:06,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:53:06,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590218480] [2021-11-12 22:53:06,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590218480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:53:06,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571755929] [2021-11-12 22:53:06,318 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-12 22:53:06,322 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:53:06,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:53:06,336 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:53:06,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:53:06,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,379 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:06,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:53:06,383 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:06,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:53:06,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:53:06,424 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-12 22:53:06,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:06,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:53:06,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:53:06,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:53:06,461 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:53:06,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:06,514 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:06,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:06,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:06,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:06,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:53:06,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:53:06,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:53:06,550 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:53:06,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:06,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:06,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:53:06,601 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:53:06,601 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:53:06,613 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.8 percent of original size [2021-11-12 22:53:06,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-12 22:53:06,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:06,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:06,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:06,828 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.5 percent of original size [2021-11-12 22:53:06,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-12 22:53:06,873 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:53:07,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [571755929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:07,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:53:07,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2021-11-12 22:53:07,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135855603] [2021-11-12 22:53:07,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:07,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:07,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:07,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:53:07,591 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-12 22:53:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:07,614 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-11-12 22:53:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2021-11-12 22:53:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:07,615 INFO L225 Difference]: With dead ends: 7 [2021-11-12 22:53:07,615 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:53:07,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:53:07,618 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.72ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:07,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 8 Unknown, 0 Unchecked, 0.26ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 17.72ms Time] [2021-11-12 22:53:07,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:53:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:53:07,620 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) [2021-11-12 22:53:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:53:07,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-12 22:53:07,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:07,621 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:53:07,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-12 22:53:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:53:07,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:53:07,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:53:07,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:07,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:07,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:53:08,127 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:53:08,128 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-12 22:53:08,128 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-12 22:53:08,128 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:53:08,128 INFO L861 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-11-12 22:53:08,129 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-12 22:53:08,129 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse14 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= (select |#valid| |#t~string1.base|) 1)) (.cse1 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse2 (= (select .cse14 (+ |#t~string0.offset| 1)) 0)) (.cse3 (= 2 (select |#length| |#t~string0.base|))) (.cse4 (= (select |#valid| 0) 0)) (.cse5 (= (select |#valid| |#t~string0.base|) 1)) (.cse6 (= |#NULL.offset| 0)) (.cse7 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse8 (= 48 (select .cse14 |#t~string0.offset|))) (.cse9 (= |#t~string1.offset| 0)) (.cse10 (= |#t~string0.offset| 0)) (.cse11 (= (select |#length| |#t~string1.base|) 25)) (.cse12 (< 0 |#StackHeapBarrier|)) (.cse13 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (< 0 (+ 9 |ULTIMATE.start_main_~i~0#1|)) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (< |ULTIMATE.start_main_~i~0#1| 11)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (< |ULTIMATE.start_main_~i~0#1| 10) .cse8 (< 0 (+ |ULTIMATE.start_main_~i~0#1| 10)) .cse9 .cse10 .cse11 .cse12 .cse13)))) [2021-11-12 22:53:08,129 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-11-12 22:53:08,129 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-11-12 22:53:08,133 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:53:08,135 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:53:08,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:53:08 BoogieIcfgContainer [2021-11-12 22:53:08,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:53:08,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:53:08,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:53:08,162 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:53:08,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:04" (3/4) ... [2021-11-12 22:53:08,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:53:08,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-12 22:53:08,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-12 22:53:08,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-12 22:53:08,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:53:08,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:53:08,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:53:08,215 INFO L158 Benchmark]: Toolchain (without parser) took 4450.54ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 53.9MB in the beginning and 102.5MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:08,215 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:08,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.42ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 67.8MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:53:08,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.10ms. Allocated memory is still 90.2MB. Free memory was 67.8MB in the beginning and 66.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:08,216 INFO L158 Benchmark]: Boogie Preprocessor took 23.95ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 65.5MB in the end (delta: 747.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:08,217 INFO L158 Benchmark]: RCFGBuilder took 427.93ms. Allocated memory is still 90.2MB. Free memory was 65.2MB in the beginning and 56.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:53:08,217 INFO L158 Benchmark]: TraceAbstraction took 3527.26ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 55.5MB in the beginning and 104.5MB in the end (delta: -49.0MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2021-11-12 22:53:08,218 INFO L158 Benchmark]: Witness Printer took 51.99ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:08,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.42ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 67.8MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.10ms. Allocated memory is still 90.2MB. Free memory was 67.8MB in the beginning and 66.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.95ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 65.5MB in the end (delta: 747.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 427.93ms. Allocated memory is still 90.2MB. Free memory was 65.2MB in the beginning and 56.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3527.26ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 55.5MB in the beginning and 104.5MB in the end (delta: -49.0MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Witness Printer took 51.99ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 16]: 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 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 40.05ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 33.49ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 16 mSolverCounterSat, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 144 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 SizeOfPredicates, 4 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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: OVERALL_TIME: 555.65ms, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 6, TOOLS_POST_TIME: 294.67ms, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.00ms, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.00ms, TOOLS_QUANTIFIERELIM_APPLICATIONS: 6, TOOLS_QUANTIFIERELIM_TIME: 288.01ms, TOOLS_QUANTIFIERELIM_MAX_TIME: 230.05ms, FLUID_QUERY_TIME: 3.08ms, FLUID_QUERIES: 16, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.00ms, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.00ms, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 181.14ms, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 8.02ms, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME: 16.19ms, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 252.99ms, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 252.83ms, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.00ms, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.00ms, PROCEDURE_GRAPH_BUILDER_TIME: 2.22ms, PATH_EXPR_TIME: 2.61ms, REGEX_TO_DAG_TIME: 3.58ms, DAG_COMPRESSION_TIME: 7.87ms, DAG_COMPRESSION_PROCESSED_NODES: 33, DAG_COMPRESSION_RETAINED_NODES: 18, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((((((((\valid["benchmark52_polynomial.c"] == 1 && unknown-#StackHeapBarrier-unknown < "benchmark52_polynomial.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && 0 < 9 + i) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "benchmark52_polynomial.c" == 0) && "0" == 0) && unknown-#length-unknown["benchmark52_polynomial.c"] == 25) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && i < 11) || (((((((((((((((\valid["benchmark52_polynomial.c"] == 1 && unknown-#StackHeapBarrier-unknown < "benchmark52_polynomial.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && i < 10) && 48 == unknown-#memory_int-unknown["0"]["0"]) && 0 < i + 10) && "benchmark52_polynomial.c" == 0) && "0" == 0) && unknown-#length-unknown["benchmark52_polynomial.c"] == 25) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2021-11-12 22:53:08,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f33fce6-04b1-4847-acad-42d14134fef3/bin/utaipan-vmNK8stdcF/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