./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/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 1b479b889a3fb03988d45e8dd23af320d3b36d51 .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:38:30,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:38:30,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:38:30,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:38:30,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:38:30,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:38:30,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:38:30,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:38:30,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:38:30,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:38:30,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:38:30,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:38:30,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:38:30,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:38:30,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:38:30,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:38:30,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:38:30,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:38:30,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:38:30,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:38:30,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:38:30,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:38:30,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:38:30,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:38:30,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:38:30,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:38:30,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:38:30,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:38:30,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:38:30,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:38:30,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:38:30,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:38:30,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:38:30,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:38:30,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:38:30,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:38:30,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:38:30,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:38:30,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:38:30,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:38:30,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:38:30,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:38:30,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:38:30,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:38:30,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:38:30,780 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:38:30,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:38:30,780 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:38:30,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:38:30,781 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:38:30,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:38:30,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:38:30,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:38:30,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:38:30,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:38:30,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:38:30,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:38:30,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:38:30,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:38:30,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:38:30,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:38:30,784 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:38:30,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:38:30,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:38:30,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:38:30,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:38:30,785 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_9d1caf4d-51a0-44fb-8994-9da59c912264/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b479b889a3fb03988d45e8dd23af320d3b36d51 [2020-12-09 05:38:30,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:38:31,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:38:31,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:38:31,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:38:31,010 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:38:31,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c [2020-12-09 05:38:31,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/data/dcf634879/042666f8df5840f8935bb399af74895e/FLAG511e00186 [2020-12-09 05:38:31,411 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:38:31,412 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c [2020-12-09 05:38:31,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/data/dcf634879/042666f8df5840f8935bb399af74895e/FLAG511e00186 [2020-12-09 05:38:31,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/data/dcf634879/042666f8df5840f8935bb399af74895e [2020-12-09 05:38:31,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:38:31,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:38:31,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:38:31,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:38:31,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:38:31,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60235d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31, skipping insertion in model container [2020-12-09 05:38:31,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:38:31,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:38:31,554 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c[458,471] [2020-12-09 05:38:31,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:38:31,574 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:38:31,587 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound1.c[458,471] [2020-12-09 05:38:31,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:38:31,607 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:38:31,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31 WrapperNode [2020-12-09 05:38:31,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:38:31,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:38:31,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:38:31,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:38:31,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:38:31,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:38:31,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:38:31,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:38:31,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... [2020-12-09 05:38:31,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:38:31,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:38:31,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:38:31,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:38:31,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/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 [2020-12-09 05:38:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:38:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:38:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:38:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:38:31,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:38:31,925 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-09 05:38:31,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:31 BoogieIcfgContainer [2020-12-09 05:38:31,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:38:31,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:38:31,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:38:31,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:38:31,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:38:31" (1/3) ... [2020-12-09 05:38:31,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a27d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:38:31, skipping insertion in model container [2020-12-09 05:38:31,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:38:31" (2/3) ... [2020-12-09 05:38:31,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a27d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:38:31, skipping insertion in model container [2020-12-09 05:38:31,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:31" (3/3) ... [2020-12-09 05:38:31,932 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound1.c [2020-12-09 05:38:31,942 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:38:31,944 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-09 05:38:31,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 05:38:31,970 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:38:31,970 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:38:31,970 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:38:31,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:38:31,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:38:31,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:38:31,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:38:31,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:38:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 05:38:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 05:38:31,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:38:31,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 05:38:31,984 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:38:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:38:31,990 INFO L82 PathProgramCache]: Analyzing trace with hash 3301933, now seen corresponding path program 1 times [2020-12-09 05:38:31,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:38:31,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450397071] [2020-12-09 05:38:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:38:32,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:38:32,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842064203] [2020-12-09 05:38:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/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 [2020-12-09 05:38:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:38:32,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 05:38:32,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:38:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:38:32,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:38:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:38:32,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450397071] [2020-12-09 05:38:32,263 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:38:32,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842064203] [2020-12-09 05:38:32,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:38:32,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 05:38:32,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056931944] [2020-12-09 05:38:32,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:38:32,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:38:32,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:38:32,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:38:32,285 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2020-12-09 05:38:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:38:36,431 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2020-12-09 05:38:36,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:38:36,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-12-09 05:38:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:38:36,440 INFO L225 Difference]: With dead ends: 47 [2020-12-09 05:38:36,441 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 05:38:36,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:38:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 05:38:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-12-09 05:38:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 05:38:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-09 05:38:36,471 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 4 [2020-12-09 05:38:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:38:36,471 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-09 05:38:36,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:38:36,471 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-09 05:38:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:38:36,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:38:36,472 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-12-09 05:38:36,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 05:38:36,674 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:38:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:38:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1187658925, now seen corresponding path program 1 times [2020-12-09 05:38:36,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:38:36,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353754251] [2020-12-09 05:38:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:38:36,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:38:36,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879296288] [2020-12-09 05:38:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/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 [2020-12-09 05:38:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:38:36,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:38:36,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:38:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:38:36,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:38:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:38:36,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353754251] [2020-12-09 05:38:36,799 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:38:36,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879296288] [2020-12-09 05:38:36,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:38:36,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 05:38:36,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435597684] [2020-12-09 05:38:36,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:38:36,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:38:36,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:38:36,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:38:36,802 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-12-09 05:38:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:38:36,816 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-09 05:38:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:38:36,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 05:38:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:38:36,818 INFO L225 Difference]: With dead ends: 26 [2020-12-09 05:38:36,818 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 05:38:36,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:38:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 05:38:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 05:38:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 05:38:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-09 05:38:36,823 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-12-09 05:38:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:38:36,823 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-09 05:38:36,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:38:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-09 05:38:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:38:36,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:38:36,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:38:37,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:38:37,026 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:38:37,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:38:37,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1160044347, now seen corresponding path program 1 times [2020-12-09 05:38:37,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:38:37,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032595453] [2020-12-09 05:38:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:38:37,074 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:38:37,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257127295] [2020-12-09 05:38:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:38:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:38:37,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 05:38:37,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:38:37,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 05:38:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:38:37,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:38:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:38:37,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032595453] [2020-12-09 05:38:37,332 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:38:37,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257127295] [2020-12-09 05:38:37,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [185513427] [2020-12-09 05:38:37,346 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 05:38:37,347 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:38:37,350 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:38:37,353 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:38:37,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:38:37,695 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:38:40,266 WARN L197 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-09 05:38:40,735 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2020-12-09 05:38:40,990 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-09 05:38:53,532 WARN L197 SmtUtils]: Spent 12.39 s on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-09 05:38:55,808 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-09 05:38:56,379 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-09 05:38:56,380 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:38:56,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:38:56,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-12-09 05:38:56,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658537280] [2020-12-09 05:38:56,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 05:38:56,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:38:56,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 05:38:56,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-12-09 05:38:56,382 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 8 states. [2020-12-09 05:38:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:38:56,506 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-09 05:38:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:38:56,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 05:38:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:38:56,506 INFO L225 Difference]: With dead ends: 13 [2020-12-09 05:38:56,506 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:38:56,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-12-09 05:38:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:38:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:38:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:38:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:38:56,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-09 05:38:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:38:56,507 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:38:56,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 05:38:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:38:56,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:38:56,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:38:56,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:38:58,952 WARN L197 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-09 05:38:58,953 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L258 CegarLoopResult]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 6) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 10) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 15)) (+ (* ULTIMATE.start_main_~x~0 30) ULTIMATE.start_main_~y~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0) .cse0) (and (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse0))) [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 05:38:58,954 INFO L262 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-12-09 05:38:58,955 INFO L258 CegarLoopResult]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~k~0 1))) (or (and (<= 0 ULTIMATE.start_main_~c~0) .cse0 (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse1) (and (= (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 6) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 10) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 15)) (+ (* ULTIMATE.start_main_~x~0 30) ULTIMATE.start_main_~y~0)) .cse0 (= ULTIMATE.start_main_~y~0 1) (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0) .cse1))) [2020-12-09 05:38:58,955 INFO L262 CegarLoopResult]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2020-12-09 05:38:58,955 INFO L258 CegarLoopResult]: At program point L10-5(lines 9 15) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0)) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~y~0 1) (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~k~0 1))) [2020-12-09 05:38:58,955 INFO L262 CegarLoopResult]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2020-12-09 05:38:58,955 INFO L258 CegarLoopResult]: At program point L10-8(lines 9 15) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-12-09 05:38:58,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:38:58 BoogieIcfgContainer [2020-12-09 05:38:58,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:38:58,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:38:58,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:38:58,967 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:38:58,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:38:31" (3/4) ... [2020-12-09 05:38:58,969 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:38:58,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 05:38:58,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 05:38:58,976 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 05:38:58,976 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:38:59,002 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9d1caf4d-51a0-44fb-8994-9da59c912264/bin/utaipan/witness.graphml [2020-12-09 05:38:59,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:38:59,003 INFO L168 Benchmark]: Toolchain (without parser) took 27574.24 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 50.9 MB in the beginning and 70.1 MB in the end (delta: -19.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:38:59,003 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:38:59,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.95 ms. Allocated memory is still 92.3 MB. Free memory was 50.7 MB in the beginning and 62.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:38:59,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 92.3 MB. Free memory was 62.9 MB in the beginning and 61.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:38:59,004 INFO L168 Benchmark]: Boogie Preprocessor took 15.53 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 60.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:38:59,005 INFO L168 Benchmark]: RCFGBuilder took 274.56 ms. Allocated memory is still 92.3 MB. Free memory was 60.2 MB in the beginning and 55.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:38:59,005 INFO L168 Benchmark]: TraceAbstraction took 27039.41 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 55.3 MB in the beginning and 73.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:38:59,005 INFO L168 Benchmark]: Witness Printer took 34.99 ms. Allocated memory is still 119.5 MB. Free memory was 73.2 MB in the beginning and 70.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:38:59,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 178.95 ms. Allocated memory is still 92.3 MB. Free memory was 50.7 MB in the beginning and 62.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 92.3 MB. Free memory was 62.9 MB in the beginning and 61.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.53 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 60.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.56 ms. Allocated memory is still 92.3 MB. Free memory was 60.2 MB in the beginning and 55.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27039.41 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 55.3 MB in the beginning and 73.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. * Witness Printer took 34.99 ms. Allocated memory is still 119.5 MB. Free memory was 73.2 MB in the beginning and 70.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((y * y * y * y * y * 6 + y * y * y * 10 + y * y * y * y * 15 == x * 30 + y && 1 == cond) && y == 1) && 0 < k) && k <= c) && k <= 1) || ((((0 <= c && x == 0) && y == 0) && 0 <= k) && k <= 1) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((1 == cond && x == 0) && y == 0) || ((((!(0 == cond) && y == 1) && 0 < k) && k <= c) && k <= 1) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((0 <= c && 1 == cond) && x == 0) && y == 0) && 0 <= k) && k <= 1) || (((((y * y * y * y * y * 6 + y * y * y * 10 + y * y * y * y * 15 == x * 30 + y && 1 == cond) && y == 1) && 0 < k) && k <= c) && k <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 48 SDslu, 32 SDs, 0 SdLazy, 53 SolverSat, 31 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 157 HoareAnnotationTreeSize, 4 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 41 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 3186 SizeOfPredicates, 12 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 14/20 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: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...