./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --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-a4ecdab [2020-11-30 02:48:47,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:48:47,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:48:47,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:48:47,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:48:47,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:48:47,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:48:47,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:48:47,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:48:47,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:48:47,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:48:47,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:48:47,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:48:47,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:48:47,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:48:47,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:48:47,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:48:47,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:48:47,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:48:47,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:48:47,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:48:47,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:48:47,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:48:47,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:48:47,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:48:47,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:48:47,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:48:47,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:48:47,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:48:47,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:48:47,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:48:47,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:48:47,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:48:47,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:48:47,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:48:47,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:48:47,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:48:47,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:48:47,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:48:47,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:48:47,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:48:47,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:48:47,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:48:47,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:48:47,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:48:47,499 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:48:47,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:48:47,500 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:48:47,500 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:48:47,500 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:48:47,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:48:47,500 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:48:47,502 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:48:47,502 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:48:47,503 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:48:47,503 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:48:47,503 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:48:47,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:48:47,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:48:47,504 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:48:47,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:48:47,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:48:47,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:48:47,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:48:47,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:48:47,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:48:47,506 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:48:47,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:48:47,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:48:47,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:48:47,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:48:47,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:48:47,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:48:47,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:48:47,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:48:47,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:48:47,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:48:47,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:48:47,511 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:48:47,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:48:47,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:48:47,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:48:47,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:48:47,512 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_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3379b599758536e5aae0f8bd653896218533908 [2020-11-30 02:48:47,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:48:47,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:48:47,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:48:47,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:48:47,933 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:48:47,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i [2020-11-30 02:48:48,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/data/677e8d597/66f21939211e4d3a8b02d4c5c5942078/FLAG7c97dac8d [2020-11-30 02:48:48,561 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:48:48,561 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i [2020-11-30 02:48:48,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/data/677e8d597/66f21939211e4d3a8b02d4c5c5942078/FLAG7c97dac8d [2020-11-30 02:48:48,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/data/677e8d597/66f21939211e4d3a8b02d4c5c5942078 [2020-11-30 02:48:48,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:48:48,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:48:48,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:48:48,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:48:48,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:48:48,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:48:48" (1/1) ... [2020-11-30 02:48:48,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f5e739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:48, skipping insertion in model container [2020-11-30 02:48:48,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:48:48" (1/1) ... [2020-11-30 02:48:48,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:48:48,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:48:49,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:48:49,226 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:48:49,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:48:49,280 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:48:49,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49 WrapperNode [2020-11-30 02:48:49,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:48:49,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:48:49,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:48:49,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:48:49,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:48:49,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:48:49,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:48:49,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:48:49,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... [2020-11-30 02:48:49,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:48:49,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:48:49,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:48:49,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:48:49,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/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 [2020-11-30 02:48:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:48:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:48:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:48:49,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:48:49,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:48:49,911 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:48:49,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:48:49 BoogieIcfgContainer [2020-11-30 02:48:49,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:48:49,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:48:49,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:48:49,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:48:49,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:48:48" (1/3) ... [2020-11-30 02:48:49,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1a8be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:48:49, skipping insertion in model container [2020-11-30 02:48:49,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:48:49" (2/3) ... [2020-11-30 02:48:49,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1a8be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:48:49, skipping insertion in model container [2020-11-30 02:48:49,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:48:49" (3/3) ... [2020-11-30 02:48:49,925 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark51_polynomial.i [2020-11-30 02:48:49,939 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:48:49,944 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 02:48:49,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 02:48:49,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:48:49,992 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:48:49,993 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:48:49,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:48:49,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:48:49,994 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:48:49,994 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:48:49,994 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:48:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-30 02:48:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:48:50,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:50,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:48:50,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:50,026 INFO L82 PathProgramCache]: Analyzing trace with hash 85188454, now seen corresponding path program 1 times [2020-11-30 02:48:50,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:50,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184896194] [2020-11-30 02:48:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:50,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184896194] [2020-11-30 02:48:50,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:48:50,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:48:50,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747417650] [2020-11-30 02:48:50,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:48:50,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:50,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:48:50,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:48:50,238 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-11-30 02:48:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:50,338 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-11-30 02:48:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:48:50,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:48:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:50,364 INFO L225 Difference]: With dead ends: 45 [2020-11-30 02:48:50,364 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 02:48:50,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:48:50,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 02:48:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2020-11-30 02:48:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 02:48:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-30 02:48:50,440 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2020-11-30 02:48:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:50,441 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-30 02:48:50,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:48:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-30 02:48:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:48:50,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:50,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:48:50,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:48:50,448 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:50,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:50,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1654118955, now seen corresponding path program 1 times [2020-11-30 02:48:50,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:50,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102287542] [2020-11-30 02:48:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:50,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102287542] [2020-11-30 02:48:50,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:48:50,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:48:50,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296152262] [2020-11-30 02:48:50,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:48:50,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:50,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:48:50,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:48:50,566 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2020-11-30 02:48:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:50,642 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-30 02:48:50,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:48:50,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 02:48:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:50,643 INFO L225 Difference]: With dead ends: 40 [2020-11-30 02:48:50,644 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 02:48:50,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:48:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 02:48:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-11-30 02:48:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 02:48:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-30 02:48:50,651 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 6 [2020-11-30 02:48:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:50,651 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-30 02:48:50,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:48:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-30 02:48:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:48:50,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:50,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:48:50,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:48:50,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:50,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1654119147, now seen corresponding path program 1 times [2020-11-30 02:48:50,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:50,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28329018] [2020-11-30 02:48:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:50,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28329018] [2020-11-30 02:48:50,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:48:50,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:48:50,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570337384] [2020-11-30 02:48:50,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:48:50,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:50,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:48:50,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:48:50,712 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2020-11-30 02:48:50,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:50,734 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-30 02:48:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:48:50,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 02:48:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:50,737 INFO L225 Difference]: With dead ends: 22 [2020-11-30 02:48:50,737 INFO L226 Difference]: Without dead ends: 21 [2020-11-30 02:48:50,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:48:50,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-30 02:48:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-30 02:48:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 02:48:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-11-30 02:48:50,742 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 6 [2020-11-30 02:48:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:50,743 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-11-30 02:48:50,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:48:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-30 02:48:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:48:50,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:50,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:48:50,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:48:50,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash 261920016, now seen corresponding path program 1 times [2020-11-30 02:48:50,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:50,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467696644] [2020-11-30 02:48:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:50,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467696644] [2020-11-30 02:48:50,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:48:50,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:48:50,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960659536] [2020-11-30 02:48:50,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:48:50,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:50,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:48:50,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:48:50,815 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2020-11-30 02:48:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:50,875 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-11-30 02:48:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:48:50,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:48:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:50,876 INFO L225 Difference]: With dead ends: 27 [2020-11-30 02:48:50,876 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 02:48:50,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:48:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 02:48:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 02:48:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 02:48:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-11-30 02:48:50,882 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 7 [2020-11-30 02:48:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:50,885 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-11-30 02:48:50,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:48:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-11-30 02:48:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:48:50,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:50,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:48:50,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:48:50,887 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:50,889 INFO L82 PathProgramCache]: Analyzing trace with hash 261914058, now seen corresponding path program 1 times [2020-11-30 02:48:50,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:50,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594175463] [2020-11-30 02:48:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:50,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594175463] [2020-11-30 02:48:50,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:48:50,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:48:50,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768823546] [2020-11-30 02:48:50,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:48:50,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:50,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:48:50,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:48:50,937 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2020-11-30 02:48:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:50,979 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-30 02:48:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:48:50,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:48:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:50,982 INFO L225 Difference]: With dead ends: 32 [2020-11-30 02:48:50,982 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:48:50,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:48:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:48:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-11-30 02:48:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 02:48:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-11-30 02:48:50,989 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 7 [2020-11-30 02:48:50,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:50,989 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-11-30 02:48:50,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:48:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-11-30 02:48:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:48:50,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:50,990 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:48:50,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:48:50,990 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:50,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:50,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1273829178, now seen corresponding path program 1 times [2020-11-30 02:48:50,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:50,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731457180] [2020-11-30 02:48:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:51,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731457180] [2020-11-30 02:48:51,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:48:51,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:48:51,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224802321] [2020-11-30 02:48:51,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:48:51,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:48:51,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:48:51,073 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 4 states. [2020-11-30 02:48:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:51,130 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-11-30 02:48:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:48:51,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 02:48:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:51,136 INFO L225 Difference]: With dead ends: 39 [2020-11-30 02:48:51,136 INFO L226 Difference]: Without dead ends: 21 [2020-11-30 02:48:51,137 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 [2020-11-30 02:48:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-30 02:48:51,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-11-30 02:48:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 02:48:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-30 02:48:51,141 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2020-11-30 02:48:51,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:51,141 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-30 02:48:51,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:48:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-30 02:48:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:48:51,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:51,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 02:48:51,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:48:51,143 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:51,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1310176534, now seen corresponding path program 1 times [2020-11-30 02:48:51,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:51,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565952957] [2020-11-30 02:48:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:51,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565952957] [2020-11-30 02:48:51,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561576130] [2020-11-30 02:48:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/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 [2020-11-30 02:48:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:51,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:48:51,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:48:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:51,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:48:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:51,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152692661] [2020-11-30 02:48:51,473 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:48:51,473 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:48:51,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:48:51,488 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:48:51,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:48:52,147 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:48:52,274 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-30 02:48:52,508 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-11-30 02:48:52,749 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-11-30 02:48:52,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:48:52,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5] total 12 [2020-11-30 02:48:52,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252091139] [2020-11-30 02:48:52,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:48:52,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:52,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:48:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:48:52,886 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2020-11-30 02:48:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:52,939 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-30 02:48:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:48:52,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 02:48:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:52,941 INFO L225 Difference]: With dead ends: 23 [2020-11-30 02:48:52,941 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 02:48:52,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:48:52,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 02:48:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2020-11-30 02:48:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 02:48:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-30 02:48:52,945 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-11-30 02:48:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:52,946 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-30 02:48:52,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:48:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-30 02:48:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:48:52,946 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:48:52,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:48:53,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 02:48:53,148 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:48:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:48:53,148 INFO L82 PathProgramCache]: Analyzing trace with hash -83966352, now seen corresponding path program 1 times [2020-11-30 02:48:53,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:48:53,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007203025] [2020-11-30 02:48:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:48:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:48:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:48:53,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007203025] [2020-11-30 02:48:53,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:48:53,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:48:53,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109270999] [2020-11-30 02:48:53,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:48:53,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:48:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:48:53,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:48:53,225 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2020-11-30 02:48:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:48:53,290 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-11-30 02:48:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:48:53,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 02:48:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:48:53,294 INFO L225 Difference]: With dead ends: 25 [2020-11-30 02:48:53,294 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:48:53,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:48:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:48:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:48:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:48:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:48:53,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-30 02:48:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:48:53,296 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:48:53,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:48:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:48:53,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:48:53,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-30 02:48:53,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:48:53,332 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 02:48:53,332 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-30 02:48:53,332 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-30 02:48:53,332 INFO L274 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-11-30 02:48:53,332 INFO L274 CegarLoopResult]: For program point L23-4(lines 22 26) no Hoare annotation was computed. [2020-11-30 02:48:53,333 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-30 02:48:53,333 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:48:53,333 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 02:48:53,333 INFO L277 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2020-11-30 02:48:53,333 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-30 02:48:53,334 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-30 02:48:53,335 INFO L270 CegarLoopResult]: At program point L24-3(lines 22 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 50) (<= 0 ULTIMATE.start_main_~x~0)) [2020-11-30 02:48:53,335 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-30 02:48:53,335 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:48:53,335 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 02:48:53,335 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-30 02:48:53,335 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-30 02:48:53,336 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-30 02:48:53,336 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 02:48:53,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:48:53 BoogieIcfgContainer [2020-11-30 02:48:53,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:48:53,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:48:53,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:48:53,362 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:48:53,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:48:49" (3/4) ... [2020-11-30 02:48:53,371 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:48:53,387 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-30 02:48:53,387 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 02:48:53,395 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:48:53,395 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:48:53,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dfd6feaa-4fc1-46b6-952f-9479b837cfc2/bin/utaipan/witness.graphml [2020-11-30 02:48:53,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:48:53,468 INFO L168 Benchmark]: Toolchain (without parser) took 4528.28 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 78.6 MB in the beginning and 84.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 49.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:48:53,469 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:48:53,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.57 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 78.4 MB in the beginning and 110.4 MB in the end (delta: -32.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:48:53,473 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.22 ms. Allocated memory is still 134.2 MB. Free memory was 110.4 MB in the beginning and 109.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:48:53,473 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 134.2 MB. Free memory was 109.2 MB in the beginning and 108.3 MB in the end (delta: 911.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:48:53,474 INFO L168 Benchmark]: RCFGBuilder took 557.74 ms. Allocated memory is still 134.2 MB. Free memory was 107.9 MB in the beginning and 91.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:48:53,475 INFO L168 Benchmark]: TraceAbstraction took 3445.44 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 90.7 MB in the beginning and 87.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:48:53,475 INFO L168 Benchmark]: Witness Printer took 105.16 ms. Allocated memory is still 161.5 MB. Free memory was 87.5 MB in the beginning and 84.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:48:53,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.57 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 78.4 MB in the beginning and 110.4 MB in the end (delta: -32.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.22 ms. Allocated memory is still 134.2 MB. Free memory was 110.4 MB in the beginning and 109.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 134.2 MB. Free memory was 109.2 MB in the beginning and 108.3 MB in the end (delta: 911.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 557.74 ms. Allocated memory is still 134.2 MB. Free memory was 107.9 MB in the beginning and 91.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3445.44 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 90.7 MB in the beginning and 87.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. * Witness Printer took 105.16 ms. Allocated memory is still 161.5 MB. Free memory was 87.5 MB in the beginning and 84.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 50 && 0 <= x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 60 SDslu, 95 SDs, 0 SdLazy, 130 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, 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, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 150 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2281 SizeOfPredicates, 3 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 5/20 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]: 675, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME[ms]: 205, 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: 15, TOOLS_QUANTIFIERELIM_TIME[ms]: 197, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 166, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 27, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 364, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 29, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 19, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 19, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, 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]: 3, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 20, DAG_COMPRESSION_PROCESSED_NODES: 81, DAG_COMPRESSION_RETAINED_NODES: 29, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...