./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3379b599758536e5aae0f8bd653896218533908 ................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:42,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:42,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:42,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:42,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:42,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:42,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:42,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:42,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:42,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:42,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:42,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:42,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:42,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:42,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:42,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:42,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:42,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:42,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:42,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:42,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:42,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:42,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:42,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:42,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:42,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:42,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:42,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:42,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:42,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:42,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:42,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:42,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:42,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:42,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:42,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:42,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:42,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:42,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:42,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:42,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:42,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:42,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:42,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:42,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:42,441 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:42,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:42,442 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:42,442 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:42,442 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:42,443 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:42,443 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:42,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:42,443 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:42,444 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:42,444 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:42,444 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:42,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:42,445 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:42,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:42,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:42,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:42,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:42,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:42,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:42,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:42,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:42,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:42,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:42,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:42,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:42,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:42,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:42,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:42,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:42,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:42,449 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:42,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:42,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:42,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:42,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:42,450 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_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3379b599758536e5aae0f8bd653896218533908 [2021-10-11 02:31:42,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:42,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:42,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:42,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:42,809 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:42,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i [2021-10-11 02:31:42,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/data/418e59c3f/41d4032ee610413f85a34656f1affdda/FLAG5031ed3ee [2021-10-11 02:31:43,380 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:43,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i [2021-10-11 02:31:43,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/data/418e59c3f/41d4032ee610413f85a34656f1affdda/FLAG5031ed3ee [2021-10-11 02:31:43,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/data/418e59c3f/41d4032ee610413f85a34656f1affdda [2021-10-11 02:31:43,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:43,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:43,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:43,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:43,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:43,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:43" (1/1) ... [2021-10-11 02:31:43,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7870b747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:43, skipping insertion in model container [2021-10-11 02:31:43,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:43" (1/1) ... [2021-10-11 02:31:43,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:43,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:43,961 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i[872,885] [2021-10-11 02:31:43,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:43,997 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:44,015 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i[872,885] [2021-10-11 02:31:44,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:44,034 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:44,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44 WrapperNode [2021-10-11 02:31:44,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:44,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:44,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:44,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:44,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:44,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:44,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:44,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:44,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... [2021-10-11 02:31:44,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:44,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:44,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:44,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:44,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:44,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:44,513 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:31:44,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:44 BoogieIcfgContainer [2021-10-11 02:31:44,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:44,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:44,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:44,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:44,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:43" (1/3) ... [2021-10-11 02:31:44,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4b3c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:44, skipping insertion in model container [2021-10-11 02:31:44,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:44" (2/3) ... [2021-10-11 02:31:44,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4b3c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:44, skipping insertion in model container [2021-10-11 02:31:44,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:44" (3/3) ... [2021-10-11 02:31:44,525 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark51_polynomial.i [2021-10-11 02:31:44,539 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:44,542 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:44,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:44,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:44,580 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:44,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:44,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:44,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:44,581 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:44,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:44,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:31:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:31:44,601 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:44,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:31:44,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:44,609 INFO L82 PathProgramCache]: Analyzing trace with hash 70447226, now seen corresponding path program 1 times [2021-10-11 02:31:44,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:44,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709659183] [2021-10-11 02:31:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:45,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709659183] [2021-10-11 02:31:45,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:45,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:45,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142391897] [2021-10-11 02:31:45,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:45,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:45,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:45,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:45,027 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2021-10-11 02:31:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:45,075 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-11 02:31:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:45,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:31:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:45,084 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:31:45,084 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:45,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:45,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-11 02:31:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:45,115 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:45,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:45,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:45,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:45,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:31:45,143 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:31:45,143 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-11 02:31:45,144 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-11 02:31:45,144 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:31:45,145 INFO L265 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-11 02:31:45,145 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 02:31:45,145 INFO L258 CegarLoopResult]: At program point L24-1(lines 22 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 50) (<= 0 ULTIMATE.start_main_~x~0)) [2021-10-11 02:31:45,146 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 02:31:45,146 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-11 02:31:45,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:45 BoogieIcfgContainer [2021-10-11 02:31:45,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:45,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:45,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:45,169 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:45,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:44" (3/4) ... [2021-10-11 02:31:45,173 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:45,185 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:31:45,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:31:45,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:45,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:45,227 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd5418b-dc9b-44f0-9131-c047bf33e5e3/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:45,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:45,229 INFO L168 Benchmark]: Toolchain (without parser) took 1459.76 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 48.9 MB in the beginning and 62.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:45,230 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:45,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.67 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 48.7 MB in the beginning and 79.9 MB in the end (delta: -31.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:45,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.34 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 78.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:45,233 INFO L168 Benchmark]: Boogie Preprocessor took 24.16 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 77.6 MB in the end (delta: 953.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:45,234 INFO L168 Benchmark]: RCFGBuilder took 414.19 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 61.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:45,234 INFO L168 Benchmark]: TraceAbstraction took 645.83 ms. Allocated memory is still 102.8 MB. Free memory was 61.1 MB in the beginning and 64.6 MB in the end (delta: -3.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:45,235 INFO L168 Benchmark]: Witness Printer took 58.69 ms. Allocated memory is still 102.8 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:45,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.67 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 48.7 MB in the beginning and 79.9 MB in the end (delta: -31.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.34 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 78.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.16 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 77.6 MB in the end (delta: 953.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 414.19 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 61.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 645.83 ms. Allocated memory is still 102.8 MB. Free memory was 61.1 MB in the beginning and 64.6 MB in the end (delta: -3.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.69 ms. Allocated memory is still 102.8 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 50 && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 7 SDslu, 5 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...