./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a94bf9d893e116ed4626eae9cec69d948eb5bc31 ....................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:17:55,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:17:55,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:17:55,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:17:55,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:17:55,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:17:55,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:17:55,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:17:55,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:17:55,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:17:55,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:17:55,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:17:55,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:17:55,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:17:55,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:17:55,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:17:55,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:17:55,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:17:55,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:17:55,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:17:55,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:17:55,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:17:55,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:17:55,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:17:55,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:17:55,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:17:55,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:17:55,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:17:55,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:17:55,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:17:55,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:17:55,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:17:55,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:17:55,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:17:55,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:17:55,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:17:55,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:17:55,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:17:55,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:17:55,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:17:55,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:17:55,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:17:55,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:17:55,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:17:55,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:17:55,753 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:17:55,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:17:55,754 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:17:55,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:17:55,754 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:17:55,754 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:17:55,754 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:17:55,755 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:17:55,755 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:17:55,755 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:17:55,755 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:17:55,756 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:17:55,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:17:55,756 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:17:55,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:17:55,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:17:55,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:17:55,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:17:55,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:17:55,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:17:55,757 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:17:55,758 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:17:55,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:17:55,758 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:17:55,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:17:55,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:17:55,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:17:55,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:17:55,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:17:55,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:17:55,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:17:55,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:17:55,760 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:17:55,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:17:55,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:17:55,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:17:55,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:17:55,760 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/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(__VERIFIER_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 -> a94bf9d893e116ed4626eae9cec69d948eb5bc31 [2019-12-07 20:17:55,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:17:55,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:17:55,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:17:55,878 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:17:55,878 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:17:55,879 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2019-12-07 20:17:55,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/data/2ab3a6f5b/95e60fef37804c0096b7cdd31f5a0033/FLAG9899a2134 [2019-12-07 20:17:56,341 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:17:56,341 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2019-12-07 20:17:56,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/data/2ab3a6f5b/95e60fef37804c0096b7cdd31f5a0033/FLAG9899a2134 [2019-12-07 20:17:56,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/data/2ab3a6f5b/95e60fef37804c0096b7cdd31f5a0033 [2019-12-07 20:17:56,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:17:56,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:17:56,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:17:56,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:17:56,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:17:56,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431cfabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56, skipping insertion in model container [2019-12-07 20:17:56,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:17:56,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:17:56,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:17:56,487 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:17:56,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:17:56,541 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:17:56,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56 WrapperNode [2019-12-07 20:17:56,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:17:56,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:17:56,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:17:56,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:17:56,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:17:56,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:17:56,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:17:56,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:17:56,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... [2019-12-07 20:17:56,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:17:56,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:17:56,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:17:56,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:17:56,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/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 [2019-12-07 20:17:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:17:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:17:56,747 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:17:56,748 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 20:17:56,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:17:56 BoogieIcfgContainer [2019-12-07 20:17:56,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:17:56,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:17:56,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:17:56,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:17:56,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:17:56" (1/3) ... [2019-12-07 20:17:56,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c72562b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:17:56, skipping insertion in model container [2019-12-07 20:17:56,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:17:56" (2/3) ... [2019-12-07 20:17:56,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c72562b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:17:56, skipping insertion in model container [2019-12-07 20:17:56,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:17:56" (3/3) ... [2019-12-07 20:17:56,753 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2019-12-07 20:17:56,759 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:17:56,763 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:17:56,770 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:17:56,784 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:17:56,784 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:17:56,784 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:17:56,784 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:17:56,784 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:17:56,785 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:17:56,785 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:17:56,785 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:17:56,794 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-12-07 20:17:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:17:56,797 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:17:56,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:17:56,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:17:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:17:56,802 INFO L82 PathProgramCache]: Analyzing trace with hash 680863377, now seen corresponding path program 1 times [2019-12-07 20:17:56,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:17:56,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082760340] [2019-12-07 20:17:56,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:17:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:17:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:17:56,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082760340] [2019-12-07 20:17:56,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:17:56,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:17:56,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328941027] [2019-12-07 20:17:56,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 20:17:56,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:17:56,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 20:17:56,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:17:56,895 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2019-12-07 20:17:56,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:17:56,906 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-12-07 20:17:56,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 20:17:56,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 20:17:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:17:56,913 INFO L225 Difference]: With dead ends: 27 [2019-12-07 20:17:56,913 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 20:17:56,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:17:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 20:17:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 20:17:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 20:17:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-12-07 20:17:56,936 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2019-12-07 20:17:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:17:56,936 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-12-07 20:17:56,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 20:17:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-12-07 20:17:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:17:56,937 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:17:56,937 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:17:56,937 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:17:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:17:56,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1199883821, now seen corresponding path program 1 times [2019-12-07 20:17:56,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:17:56,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115117038] [2019-12-07 20:17:56,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:17:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:17:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:17:56,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115117038] [2019-12-07 20:17:56,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:17:56,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:17:56,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694159428] [2019-12-07 20:17:56,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:17:56,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:17:56,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:17:56,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:17:56,983 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2019-12-07 20:17:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:17:57,011 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-07 20:17:57,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:17:57,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 20:17:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:17:57,012 INFO L225 Difference]: With dead ends: 18 [2019-12-07 20:17:57,012 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 20:17:57,012 INFO L630 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 [2019-12-07 20:17:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 20:17:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-12-07 20:17:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:17:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 20:17:57,015 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-12-07 20:17:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:17:57,015 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 20:17:57,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:17:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 20:17:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 20:17:57,016 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:17:57,016 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:17:57,016 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:17:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:17:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash 986501574, now seen corresponding path program 1 times [2019-12-07 20:17:57,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:17:57,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504791105] [2019-12-07 20:17:57,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:17:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:17:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:17:57,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504791105] [2019-12-07 20:17:57,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:17:57,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 20:17:57,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672253006] [2019-12-07 20:17:57,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:17:57,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:17:57,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:17:57,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:17:57,053 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2019-12-07 20:17:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:17:57,089 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-12-07 20:17:57,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:17:57,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 20:17:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:17:57,090 INFO L225 Difference]: With dead ends: 31 [2019-12-07 20:17:57,090 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 20:17:57,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:17:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 20:17:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-12-07 20:17:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 20:17:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-12-07 20:17:57,095 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2019-12-07 20:17:57,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:17:57,095 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-12-07 20:17:57,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:17:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-12-07 20:17:57,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 20:17:57,096 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:17:57,096 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:17:57,096 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:17:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:17:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1697838475, now seen corresponding path program 1 times [2019-12-07 20:17:57,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:17:57,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947046311] [2019-12-07 20:17:57,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:17:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:17:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 20:17:57,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947046311] [2019-12-07 20:17:57,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931296181] [2019-12-07 20:17:57,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/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 [2019-12-07 20:17:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:17:57,180 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 20:17:57,184 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:17:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:17:57,236 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:17:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:17:57,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1977130399] [2019-12-07 20:17:57,287 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-12-07 20:17:57,287 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:17:57,291 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:17:57,296 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:17:57,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:17:57,463 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:17:57,762 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:17:57,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:17:57,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2019-12-07 20:17:57,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747667330] [2019-12-07 20:17:57,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 20:17:57,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:17:57,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 20:17:57,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2019-12-07 20:17:57,765 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 13 states. [2019-12-07 20:17:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:17:57,983 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-12-07 20:17:57,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 20:17:57,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-12-07 20:17:57,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:17:57,984 INFO L225 Difference]: With dead ends: 34 [2019-12-07 20:17:57,984 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:17:57,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 20:17:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:17:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:17:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:17:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:17:57,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-12-07 20:17:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:17:57,986 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:17:57,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 20:17:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:17:57,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:17:58,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:17:58,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 20:17:58,303 INFO L242 CegarLoopResult]: At program point L31-2(lines 31 39) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 0) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)) (and (<= 1 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)))) [2019-12-07 20:17:58,304 INFO L249 CegarLoopResult]: At program point L31-3(lines 31 39) the Hoare annotation is: true [2019-12-07 20:17:58,304 INFO L246 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2019-12-07 20:17:58,304 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 20:17:58,304 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-12-07 20:17:58,304 INFO L246 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2019-12-07 20:17:58,304 INFO L242 CegarLoopResult]: At program point L24-3(lines 24 28) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 0) (<= 0 ULTIMATE.start_main_~k~0)) (and (<= 1 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0))) [2019-12-07 20:17:58,304 INFO L246 CegarLoopResult]: For program point L24-4(lines 24 28) no Hoare annotation was computed. [2019-12-07 20:17:58,304 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-12-07 20:17:58,305 INFO L242 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (<= ULTIMATE.start_main_~i~0 0) .cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0) .cse0 (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0))))) [2019-12-07 20:17:58,305 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 20:17:58,305 INFO L246 CegarLoopResult]: For program point L17-1(lines 17 19) no Hoare annotation was computed. [2019-12-07 20:17:58,305 INFO L242 CegarLoopResult]: At program point L17-3(lines 17 19) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~k~0) [2019-12-07 20:17:58,305 INFO L246 CegarLoopResult]: For program point L17-4(lines 10 41) no Hoare annotation was computed. [2019-12-07 20:17:58,305 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 20:17:58,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:17:58 BoogieIcfgContainer [2019-12-07 20:17:58,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:17:58,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:17:58,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:17:58,318 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:17:58,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:17:56" (3/4) ... [2019-12-07 20:17:58,321 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:17:58,327 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 20:17:58,328 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 20:17:58,328 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:17:58,359 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8b11bff3-c498-4939-b38d-f1cd1dd2d6bf/bin/utaipan/witness.graphml [2019-12-07 20:17:58,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:17:58,361 INFO L168 Benchmark]: Toolchain (without parser) took 2003.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.4 MB in the beginning and 838.3 MB in the end (delta: 101.1 MB). Peak memory consumption was 199.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:17:58,361 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:17:58,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:17:58,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:17:58,362 INFO L168 Benchmark]: Boogie Preprocessor took 12.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:17:58,362 INFO L168 Benchmark]: RCFGBuilder took 169.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:17:58,363 INFO L168 Benchmark]: TraceAbstraction took 1568.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 841.4 MB in the end (delta: 229.2 MB). Peak memory consumption was 229.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:17:58,363 INFO L168 Benchmark]: Witness Printer took 41.65 ms. Allocated memory is still 1.1 GB. Free memory was 841.4 MB in the beginning and 838.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:17:58,370 INFO L335 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 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 169.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1568.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 841.4 MB in the end (delta: 229.2 MB). Peak memory consumption was 229.2 MB. Max. memory is 11.5 GB. * Witness Printer took 41.65 ms. Allocated memory is still 1.1 GB. Free memory was 841.4 MB in the beginning and 838.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (i <= 0 && 0 <= k) || (1 <= k && i <= k) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((i <= 0 && !(0 == cond)) && n <= j) || ((i <= k && !(0 == cond)) && n <= k + j) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((i <= 0 && 0 <= k) && n <= j) || ((1 <= k && i <= k) && n <= k + j) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 <= k - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 41 SDtfs, 55 SDslu, 54 SDs, 0 SdLazy, 138 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 18 NumberOfFragments, 67 HoareAnnotationTreeSize, 5 FomulaSimplifications, 84 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2760 SizeOfPredicates, 3 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...