./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c -s /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/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 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:00:23,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:23,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:00:23,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:00:23,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:00:23,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:00:23,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:00:23,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:00:23,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:00:23,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:00:23,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:00:23,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:00:23,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:00:23,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:00:23,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:00:23,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:00:23,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:00:23,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:00:23,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:00:23,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:00:23,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:00:23,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:00:23,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:00:23,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:00:23,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:00:23,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:00:23,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:00:23,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:00:23,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:00:23,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:00:23,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:00:23,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:00:23,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:00:23,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:00:23,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:00:23,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:00:23,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:00:23,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:00:23,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:00:23,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:00:23,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:00:23,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:00:23,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:00:23,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:00:23,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:00:23,785 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:00:23,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:00:23,786 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:00:23,786 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:00:23,786 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:00:23,787 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:00:23,787 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:00:23,788 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:00:23,788 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:00:23,788 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:00:23,789 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:00:23,789 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:00:23,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:00:23,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:00:23,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:00:23,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:00:23,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:00:23,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:00:23,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:00:23,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:00:23,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:00:23,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:00:23,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:00:23,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:00:23,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:00:23,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:00:23,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:00:23,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:00:23,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:23,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:00:23,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:00:23,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:00:23,796 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:00:23,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:00:23,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:00:23,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:00:23,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:00:23,798 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_03e02dd0-a371-45fb-8bde-136070e6186b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f [2020-11-22 13:00:24,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:00:24,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:00:24,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:00:24,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:00:24,098 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:00:24,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2020-11-22 13:00:24,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/data/091f36cf8/71c48f6778be4fccb2c1b5f11d7021df/FLAGdbb5c0c26 [2020-11-22 13:00:24,733 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:00:24,734 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2020-11-22 13:00:24,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/data/091f36cf8/71c48f6778be4fccb2c1b5f11d7021df/FLAGdbb5c0c26 [2020-11-22 13:00:24,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/data/091f36cf8/71c48f6778be4fccb2c1b5f11d7021df [2020-11-22 13:00:24,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:00:24,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:00:24,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:24,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:00:24,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:00:24,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:24" (1/1) ... [2020-11-22 13:00:25,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8e2c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25, skipping insertion in model container [2020-11-22 13:00:25,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:24" (1/1) ... [2020-11-22 13:00:25,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:00:25,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:25,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:25,509 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:00:25,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:25,684 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:00:25,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25 WrapperNode [2020-11-22 13:00:25,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:25,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:25,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:00:25,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:00:25,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:25,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:00:25,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:00:25,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:00:25,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... [2020-11-22 13:00:25,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:00:25,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:00:25,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:00:25,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:00:25,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:25,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:00:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:00:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:00:25,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:00:28,033 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:00:28,033 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:00:28,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:28 BoogieIcfgContainer [2020-11-22 13:00:28,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:00:28,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:00:28,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:00:28,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:00:28,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:00:24" (1/3) ... [2020-11-22 13:00:28,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490494fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:28, skipping insertion in model container [2020-11-22 13:00:28,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:25" (2/3) ... [2020-11-22 13:00:28,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490494fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:28, skipping insertion in model container [2020-11-22 13:00:28,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:28" (3/3) ... [2020-11-22 13:00:28,045 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-11-22 13:00:28,059 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:00:28,063 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:00:28,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:00:28,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:00:28,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:00:28,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:00:28,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:00:28,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:00:28,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:00:28,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:00:28,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:00:28,135 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 13:00:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 13:00:28,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:28,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:28,143 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1520708205, now seen corresponding path program 1 times [2020-11-22 13:00:28,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:28,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043603786] [2020-11-22 13:00:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:28,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043603786] [2020-11-22 13:00:28,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:28,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:28,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581545423] [2020-11-22 13:00:28,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:28,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:28,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:28,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:28,621 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-22 13:00:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:29,157 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-22 13:00:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:29,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-22 13:00:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:29,179 INFO L225 Difference]: With dead ends: 224 [2020-11-22 13:00:29,179 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 13:00:29,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 13:00:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-22 13:00:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 13:00:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-22 13:00:29,230 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-22 13:00:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:29,230 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-22 13:00:29,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-22 13:00:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-22 13:00:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:29,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:29,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:00:29,236 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1975137982, now seen corresponding path program 1 times [2020-11-22 13:00:29,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:29,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352042099] [2020-11-22 13:00:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:29,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352042099] [2020-11-22 13:00:29,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:29,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:29,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803163091] [2020-11-22 13:00:29,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:29,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:29,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:29,317 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-22 13:00:29,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:29,756 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2020-11-22 13:00:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:29,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-22 13:00:29,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:29,760 INFO L225 Difference]: With dead ends: 431 [2020-11-22 13:00:29,760 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 13:00:29,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 13:00:29,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-22 13:00:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-22 13:00:29,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2020-11-22 13:00:29,784 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2020-11-22 13:00:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:29,784 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2020-11-22 13:00:29,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2020-11-22 13:00:29,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 13:00:29,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:29,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:29,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:00:29,788 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:29,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1832090564, now seen corresponding path program 1 times [2020-11-22 13:00:29,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:29,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895903413] [2020-11-22 13:00:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:30,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895903413] [2020-11-22 13:00:30,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:30,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:30,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827140134] [2020-11-22 13:00:30,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:30,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:30,070 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 4 states. [2020-11-22 13:00:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:30,757 INFO L93 Difference]: Finished difference Result 784 states and 1303 transitions. [2020-11-22 13:00:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:30,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-22 13:00:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:30,761 INFO L225 Difference]: With dead ends: 784 [2020-11-22 13:00:30,761 INFO L226 Difference]: Without dead ends: 429 [2020-11-22 13:00:30,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:30,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-22 13:00:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2020-11-22 13:00:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-22 13:00:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 512 transitions. [2020-11-22 13:00:30,787 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 512 transitions. Word has length 78 [2020-11-22 13:00:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:30,788 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 512 transitions. [2020-11-22 13:00:30,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 512 transitions. [2020-11-22 13:00:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-22 13:00:30,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:30,792 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:30,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:00:30,793 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2026356915, now seen corresponding path program 1 times [2020-11-22 13:00:30,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:30,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030395231] [2020-11-22 13:00:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:00:30,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030395231] [2020-11-22 13:00:30,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:30,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:30,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069866554] [2020-11-22 13:00:30,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:30,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:30,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:30,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:30,887 INFO L87 Difference]: Start difference. First operand 358 states and 512 transitions. Second operand 3 states. [2020-11-22 13:00:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:31,262 INFO L93 Difference]: Finished difference Result 857 states and 1253 transitions. [2020-11-22 13:00:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:31,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-11-22 13:00:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:31,266 INFO L225 Difference]: With dead ends: 857 [2020-11-22 13:00:31,266 INFO L226 Difference]: Without dead ends: 500 [2020-11-22 13:00:31,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-22 13:00:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2020-11-22 13:00:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 13:00:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 595 transitions. [2020-11-22 13:00:31,282 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 595 transitions. Word has length 88 [2020-11-22 13:00:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:31,283 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 595 transitions. [2020-11-22 13:00:31,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 595 transitions. [2020-11-22 13:00:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-22 13:00:31,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:31,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:31,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:00:31,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1996677981, now seen corresponding path program 1 times [2020-11-22 13:00:31,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:31,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263523743] [2020-11-22 13:00:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 13:00:31,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263523743] [2020-11-22 13:00:31,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:31,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:31,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555392961] [2020-11-22 13:00:31,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:31,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:31,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:31,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:31,368 INFO L87 Difference]: Start difference. First operand 429 states and 595 transitions. Second operand 3 states. [2020-11-22 13:00:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:31,735 INFO L93 Difference]: Finished difference Result 1141 states and 1560 transitions. [2020-11-22 13:00:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:31,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-11-22 13:00:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:31,739 INFO L225 Difference]: With dead ends: 1141 [2020-11-22 13:00:31,739 INFO L226 Difference]: Without dead ends: 713 [2020-11-22 13:00:31,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-22 13:00:31,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 571. [2020-11-22 13:00:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 13:00:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 787 transitions. [2020-11-22 13:00:31,756 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 787 transitions. Word has length 97 [2020-11-22 13:00:31,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:31,756 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 787 transitions. [2020-11-22 13:00:31,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 787 transitions. [2020-11-22 13:00:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-22 13:00:31,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:31,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:31,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:00:31,759 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:31,760 INFO L82 PathProgramCache]: Analyzing trace with hash -929947124, now seen corresponding path program 1 times [2020-11-22 13:00:31,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:31,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371964165] [2020-11-22 13:00:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 13:00:31,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371964165] [2020-11-22 13:00:31,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:31,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:31,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696495647] [2020-11-22 13:00:31,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:31,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:31,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:31,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:31,823 INFO L87 Difference]: Start difference. First operand 571 states and 787 transitions. Second operand 4 states. [2020-11-22 13:00:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:32,345 INFO L93 Difference]: Finished difference Result 1496 states and 2052 transitions. [2020-11-22 13:00:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:32,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-22 13:00:32,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:32,351 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 13:00:32,351 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 13:00:32,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 13:00:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-22 13:00:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 13:00:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1053 transitions. [2020-11-22 13:00:32,373 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1053 transitions. Word has length 103 [2020-11-22 13:00:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:32,373 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1053 transitions. [2020-11-22 13:00:32,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1053 transitions. [2020-11-22 13:00:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-22 13:00:32,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:32,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:32,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:00:32,376 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1439710423, now seen corresponding path program 1 times [2020-11-22 13:00:32,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:32,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258886693] [2020-11-22 13:00:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-22 13:00:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258886693] [2020-11-22 13:00:32,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:32,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:32,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748019338] [2020-11-22 13:00:32,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:32,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:32,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:32,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:32,454 INFO L87 Difference]: Start difference. First operand 784 states and 1053 transitions. Second operand 3 states. [2020-11-22 13:00:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:32,803 INFO L93 Difference]: Finished difference Result 1709 states and 2311 transitions. [2020-11-22 13:00:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:32,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-11-22 13:00:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:32,809 INFO L225 Difference]: With dead ends: 1709 [2020-11-22 13:00:32,809 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 13:00:32,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 13:00:32,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-11-22 13:00:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-22 13:00:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1211 transitions. [2020-11-22 13:00:32,838 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1211 transitions. Word has length 121 [2020-11-22 13:00:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:32,838 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1211 transitions. [2020-11-22 13:00:32,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1211 transitions. [2020-11-22 13:00:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-22 13:00:32,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:32,841 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:32,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:00:32,842 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:32,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:32,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1455235910, now seen corresponding path program 1 times [2020-11-22 13:00:32,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:32,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690427407] [2020-11-22 13:00:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:32,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690427407] [2020-11-22 13:00:32,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:32,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:32,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543503542] [2020-11-22 13:00:32,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:32,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:32,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:32,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:32,986 INFO L87 Difference]: Start difference. First operand 926 states and 1211 transitions. Second operand 3 states. [2020-11-22 13:00:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:33,405 INFO L93 Difference]: Finished difference Result 2064 states and 2727 transitions. [2020-11-22 13:00:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:33,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-11-22 13:00:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:33,412 INFO L225 Difference]: With dead ends: 2064 [2020-11-22 13:00:33,412 INFO L226 Difference]: Without dead ends: 1139 [2020-11-22 13:00:33,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-22 13:00:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-11-22 13:00:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 13:00:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1383 transitions. [2020-11-22 13:00:33,440 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1383 transitions. Word has length 130 [2020-11-22 13:00:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:33,441 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1383 transitions. [2020-11-22 13:00:33,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1383 transitions. [2020-11-22 13:00:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-11-22 13:00:33,444 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:33,444 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:33,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:00:33,445 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:33,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1880050017, now seen corresponding path program 1 times [2020-11-22 13:00:33,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:33,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125513266] [2020-11-22 13:00:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-22 13:00:33,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125513266] [2020-11-22 13:00:33,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:33,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:33,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587554808] [2020-11-22 13:00:33,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:33,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:33,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:33,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:33,577 INFO L87 Difference]: Start difference. First operand 1068 states and 1383 transitions. Second operand 3 states. [2020-11-22 13:00:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:33,929 INFO L93 Difference]: Finished difference Result 2277 states and 2917 transitions. [2020-11-22 13:00:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:33,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-11-22 13:00:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:33,936 INFO L225 Difference]: With dead ends: 2277 [2020-11-22 13:00:33,936 INFO L226 Difference]: Without dead ends: 1210 [2020-11-22 13:00:33,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-22 13:00:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-22 13:00:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 13:00:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1371 transitions. [2020-11-22 13:00:33,965 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1371 transitions. Word has length 153 [2020-11-22 13:00:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:33,965 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1371 transitions. [2020-11-22 13:00:33,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1371 transitions. [2020-11-22 13:00:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-11-22 13:00:33,971 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:33,972 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:33,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:00:33,973 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:33,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:33,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1952542848, now seen corresponding path program 1 times [2020-11-22 13:00:33,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:33,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959513148] [2020-11-22 13:00:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 13:00:34,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959513148] [2020-11-22 13:00:34,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54807020] [2020-11-22 13:00:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:00:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:34,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:00:34,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:00:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-22 13:00:34,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:00:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-22 13:00:34,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:00:34,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 13:00:34,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665211751] [2020-11-22 13:00:34,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:34,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:34,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:34,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:00:34,915 INFO L87 Difference]: Start difference. First operand 1068 states and 1371 transitions. Second operand 3 states. [2020-11-22 13:00:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:35,312 INFO L93 Difference]: Finished difference Result 2135 states and 2741 transitions. [2020-11-22 13:00:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:35,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-11-22 13:00:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:35,318 INFO L225 Difference]: With dead ends: 2135 [2020-11-22 13:00:35,318 INFO L226 Difference]: Without dead ends: 1068 [2020-11-22 13:00:35,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 434 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:00:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-22 13:00:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2020-11-22 13:00:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 13:00:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1305 transitions. [2020-11-22 13:00:35,346 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1305 transitions. Word has length 218 [2020-11-22 13:00:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:35,346 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1305 transitions. [2020-11-22 13:00:35,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1305 transitions. [2020-11-22 13:00:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-22 13:00:35,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:35,351 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:35,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 13:00:35,565 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1182844426, now seen corresponding path program 1 times [2020-11-22 13:00:35,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:35,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791318713] [2020-11-22 13:00:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-22 13:00:35,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791318713] [2020-11-22 13:00:35,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:35,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:35,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105904473] [2020-11-22 13:00:35,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:35,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:35,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:35,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:35,790 INFO L87 Difference]: Start difference. First operand 1068 states and 1305 transitions. Second operand 3 states. [2020-11-22 13:00:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:36,184 INFO L93 Difference]: Finished difference Result 2346 states and 2849 transitions. [2020-11-22 13:00:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:36,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-11-22 13:00:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:36,185 INFO L225 Difference]: With dead ends: 2346 [2020-11-22 13:00:36,185 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:00:36,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:00:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:00:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:00:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:00:36,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-11-22 13:00:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:36,190 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:00:36,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:00:36,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:00:36,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:00:36,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:00:36,454 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-11-22 13:00:36,648 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 13:00:36,652 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 13:00:36,653 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 13:00:36,654 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:00:36,655 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 13:00:36,656 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 13:00:36,657 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 13:00:36,657 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 13:00:36,664 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 13:00:36,665 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 13:00:36,666 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 13:00:36,666 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 13:00:36,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:00:36 BoogieIcfgContainer [2020-11-22 13:00:36,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:00:36,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:00:36,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:00:36,690 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:00:36,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:28" (3/4) ... [2020-11-22 13:00:36,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:00:36,721 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-22 13:00:36,723 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 13:00:36,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:00:36,726 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:00:36,869 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_03e02dd0-a371-45fb-8bde-136070e6186b/bin/utaipan/witness.graphml [2020-11-22 13:00:36,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:00:36,870 INFO L168 Benchmark]: Toolchain (without parser) took 11890.14 ms. Allocated memory was 88.1 MB in the beginning and 243.3 MB in the end (delta: 155.2 MB). Free memory was 54.3 MB in the beginning and 166.4 MB in the end (delta: -112.1 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:36,871 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:00:36,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.32 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 48.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:36,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.18 ms. Allocated memory is still 88.1 MB. Free memory was 48.9 MB in the beginning and 43.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:36,872 INFO L168 Benchmark]: Boogie Preprocessor took 87.70 ms. Allocated memory is still 88.1 MB. Free memory was 43.1 MB in the beginning and 38.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:36,872 INFO L168 Benchmark]: RCFGBuilder took 2173.76 ms. Allocated memory was 88.1 MB in the beginning and 134.2 MB in the end (delta: 46.1 MB). Free memory was 38.6 MB in the beginning and 69.4 MB in the end (delta: -30.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:36,872 INFO L168 Benchmark]: TraceAbstraction took 8652.01 ms. Allocated memory was 134.2 MB in the beginning and 243.3 MB in the end (delta: 109.1 MB). Free memory was 68.4 MB in the beginning and 182.1 MB in the end (delta: -113.7 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:36,873 INFO L168 Benchmark]: Witness Printer took 179.99 ms. Allocated memory is still 243.3 MB. Free memory was 182.1 MB in the beginning and 166.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:36,875 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 88.1 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 702.32 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 48.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.18 ms. Allocated memory is still 88.1 MB. Free memory was 48.9 MB in the beginning and 43.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.70 ms. Allocated memory is still 88.1 MB. Free memory was 43.1 MB in the beginning and 38.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2173.76 ms. Allocated memory was 88.1 MB in the beginning and 134.2 MB in the end (delta: 46.1 MB). Free memory was 38.6 MB in the beginning and 69.4 MB in the end (delta: -30.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8652.01 ms. Allocated memory was 134.2 MB in the beginning and 243.3 MB in the end (delta: 109.1 MB). Free memory was 68.4 MB in the beginning and 182.1 MB in the end (delta: -113.7 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.1 GB. * Witness Printer took 179.99 ms. Allocated memory is still 243.3 MB. Free memory was 182.1 MB in the beginning and 166.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 40]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 547 SDtfs, 610 SDslu, 48 SDs, 0 SdLazy, 2366 SolverSat, 560 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 448 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 639 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 107 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2128 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 140 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1576 NumberOfCodeBlocks, 1576 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1781 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127991 SizeOfPredicates, 1 NumberOfNonLiveVariables, 486 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1496/1584 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...