./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -s /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f22151260432e5b71f08e38556ae1504245a6b14 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:55,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:55,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:55,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:55,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:55,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:55,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:56,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:56,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:56,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:56,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:56,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:56,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:56,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:56,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:56,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:56,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:56,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:56,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:56,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:56,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:56,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:56,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:56,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:56,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:56,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:56,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:56,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:56,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:56,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:56,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:56,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:56,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:56,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:56,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:56,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:56,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:56,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:56,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:56,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:56,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:56,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:56,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:56,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:56,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:56,103 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:56,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:56,104 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:56,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:56,104 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:56,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:56,105 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:56,105 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:56,105 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:56,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:56,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:56,106 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:56,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:56,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:56,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:56,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:56,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:56,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:56,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:56,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:56,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:56,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:56,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:56,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:56,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:56,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:56,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:56,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:56,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:56,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:56,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:56,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:56,111 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:56,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:56,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:56,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:56,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:56,112 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f22151260432e5b71f08e38556ae1504245a6b14 [2020-11-22 13:05:56,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:56,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:56,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:56,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:56,388 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:56,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2020-11-22 13:05:56,491 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/data/66075088e/4971a0af798b4503b97cd54af8cec87a/FLAGa11bfb681 [2020-11-22 13:05:56,913 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:56,913 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2020-11-22 13:05:56,918 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/data/66075088e/4971a0af798b4503b97cd54af8cec87a/FLAGa11bfb681 [2020-11-22 13:05:57,311 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/data/66075088e/4971a0af798b4503b97cd54af8cec87a [2020-11-22 13:05:57,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:57,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:57,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:57,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:57,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:57,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fce4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57, skipping insertion in model container [2020-11-22 13:05:57,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:57,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:57,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:57,525 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:57,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:57,551 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:57,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57 WrapperNode [2020-11-22 13:05:57,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:57,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:57,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:57,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:57,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:57,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:57,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:57,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:57,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... [2020-11-22 13:05:57,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:57,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:57,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:57,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:57,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:57,922 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:57,922 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:57,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:57 BoogieIcfgContainer [2020-11-22 13:05:57,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:57,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:57,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:57,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:57,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:57" (1/3) ... [2020-11-22 13:05:57,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a26186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:57, skipping insertion in model container [2020-11-22 13:05:57,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:57" (2/3) ... [2020-11-22 13:05:57,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a26186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:57, skipping insertion in model container [2020-11-22 13:05:57,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:57" (3/3) ... [2020-11-22 13:05:57,933 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2020-11-22 13:05:57,943 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:57,947 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:57,963 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:57,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:57,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:57,986 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:57,986 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:57,986 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:57,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:57,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:57,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-22 13:05:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:05:58,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:58,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:05:58,005 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:58,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:58,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2011779439, now seen corresponding path program 1 times [2020-11-22 13:05:58,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:58,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489623957] [2020-11-22 13:05:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:58,114 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:05:58,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626081016] [2020-11-22 13:05:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:58,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:58,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:58,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:58,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489623957] [2020-11-22 13:05:58,301 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:58,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626081016] [2020-11-22 13:05:58,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:58,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:05:58,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045446701] [2020-11-22 13:05:58,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:58,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:58,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:58,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:58,370 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-11-22 13:05:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:58,400 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-22 13:05:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:58,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 13:05:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:58,410 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:05:58,411 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:05:58,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:05:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:05:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:05:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:05:58,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 13:05:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:58,449 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:05:58,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:05:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:05:58,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:58,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:58,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 13:05:58,664 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:58,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2082797155, now seen corresponding path program 1 times [2020-11-22 13:05:58,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:58,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782469652] [2020-11-22 13:05:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:58,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:05:58,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291101751] [2020-11-22 13:05:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:58,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:05:58,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:58,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:58,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-22 13:05:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:58,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:58,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:58,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782469652] [2020-11-22 13:05:58,988 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:58,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291101751] [2020-11-22 13:05:58,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1822195880] [2020-11-22 13:05:59,024 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:05:59,024 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:05:59,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:05:59,034 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:05:59,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:05:59,435 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:05:59,599 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-22 13:05:59,976 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-11-22 13:06:00,299 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-11-22 13:06:00,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:06:00,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2020-11-22 13:06:00,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408087300] [2020-11-22 13:06:00,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:00,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:00,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:00,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:00,305 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-22 13:06:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:00,342 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-22 13:06:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:00,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 13:06:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:00,344 INFO L225 Difference]: With dead ends: 8 [2020-11-22 13:06:00,344 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:06:00,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:06:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:06:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:06:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:06:00,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 13:06:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:00,346 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:06:00,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:06:00,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:06:00,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:00,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:06:00,756 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-22 13:06:00,758 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:06:00,758 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-22 13:06:00,758 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-22 13:06:00,758 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-22 13:06:00,758 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-22 13:06:00,759 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:06:00,759 INFO L277 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2020-11-22 13:06:00,759 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-22 13:06:00,759 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse14 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= |#NULL.base| 0)) (.cse2 (= (select .cse14 |#t~string0.offset|) 48)) (.cse3 (= (select .cse14 (+ |#t~string0.offset| 1)) 0)) (.cse4 (= (select |#valid| 0) 0)) (.cse5 (= (select |#length| |#t~string1.base|) 25)) (.cse6 (= 2 (select |#length| |#t~string0.base|))) (.cse7 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse8 (= (select |#valid| |#t~string0.base|) 1)) (.cse9 (< 0 |#StackHeapBarrier|)) (.cse10 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select |#valid| |#t~string1.base|) 1)) (.cse13 (= |#t~string0.offset| 0))) (or (and .cse0 (< 0 (+ ULTIMATE.start_main_~i~0 10)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_main_~i~0 10) .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (< (* ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~i~0) (+ (* 2 ULTIMATE.start_main_~i~0) 99)) .cse13)))) [2020-11-22 13:06:00,760 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-22 13:06:00,783 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,784 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,784 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,784 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,784 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,785 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,785 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,785 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,785 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,786 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,786 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,786 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,786 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,787 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,787 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,787 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,787 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,788 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,806 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,806 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,806 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:00 BoogieIcfgContainer [2020-11-22 13:06:00,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:00,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:00,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:00,822 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:00,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:57" (3/4) ... [2020-11-22 13:06:00,829 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:06:00,838 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:06:00,838 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:06:00,838 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:00,839 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:00,880 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_976726ac-1d81-40de-8843-267c1b03b8bb/bin/utaipan/witness.graphml [2020-11-22 13:06:00,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:00,882 INFO L168 Benchmark]: Toolchain (without parser) took 3565.74 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 56.6 MB in the beginning and 59.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:00,882 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 44.2 MB in the beginning and 44.2 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:00,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.30 ms. Allocated memory is still 88.1 MB. Free memory was 56.5 MB in the beginning and 66.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:00,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.18 ms. Allocated memory is still 88.1 MB. Free memory was 66.1 MB in the beginning and 64.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:00,884 INFO L168 Benchmark]: Boogie Preprocessor took 18.61 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.9 MB in the end (delta: 826.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:00,885 INFO L168 Benchmark]: RCFGBuilder took 326.73 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 51.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:00,886 INFO L168 Benchmark]: TraceAbstraction took 2895.29 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 62.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:00,886 INFO L168 Benchmark]: Witness Printer took 58.54 ms. Allocated memory is still 113.2 MB. Free memory was 62.4 MB in the beginning and 59.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:00,890 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 88.1 MB. Free memory was 44.2 MB in the beginning and 44.2 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 235.30 ms. Allocated memory is still 88.1 MB. Free memory was 56.5 MB in the beginning and 66.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.18 ms. Allocated memory is still 88.1 MB. Free memory was 66.1 MB in the beginning and 64.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.61 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.9 MB in the end (delta: 826.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 326.73 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 51.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2895.29 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 62.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 58.54 ms. Allocated memory is still 113.2 MB. Free memory was 62.4 MB in the beginning and 59.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() 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 [2020-11-22 13:06:00,900 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,900 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,900 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,902 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,902 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,902 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,902 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,902 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,902 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,903 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,903 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,903 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,905 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,905 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,905 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,905 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,905 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:06:00,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,907 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:00,907 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,907 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:06:00,907 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,907 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,907 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:06:00,908 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((((((((((((((("benchmark52_polynomial.c" == 0 && 0 < i + 10) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["benchmark52_polynomial.c"] == 25) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && i < 10) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark52_polynomial.c") && #NULL == 0) && \valid["benchmark52_polynomial.c"] == 1) && "0" == 0) || (((((((((((((("benchmark52_polynomial.c" == 0 && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["benchmark52_polynomial.c"] == 25) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark52_polynomial.c") && #NULL == 0) && \valid["benchmark52_polynomial.c"] == 1) && i * i < 2 * i + 99) && "0" == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 3 SDslu, 6 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 145 HoareAnnotationTreeSize, 2 FomulaSimplifications, 153 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 5 NumberOfNonLiveVariables, 79 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[ms]: 412, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 6, TOOLS_POST_TIME[ms]: 182, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 6, TOOLS_QUANTIFIERELIM_TIME[ms]: 177, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 159, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 16, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 144, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 18, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 18, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 186, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 185, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 7, DAG_COMPRESSION_PROCESSED_NODES: 41, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...