./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label22.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_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label22.c -s /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/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 e337846cb6422c78c02a79ae7748bdbce67db4c4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:57:00,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:00,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:00,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:00,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:00,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:00,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:00,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:00,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:00,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:00,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:00,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:00,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:00,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:00,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:00,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:00,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:00,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:00,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:00,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:00,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:00,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:00,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:00,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:00,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:00,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:00,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:00,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:00,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:00,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:00,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:00,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:00,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:00,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:00,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:00,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:00,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:00,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:00,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:00,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:00,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:00,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:00,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:00,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:00,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:00,737 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:00,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:00,737 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:00,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:00,738 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:00,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:00,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:00,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:00,739 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:00,739 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:00,739 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:00,739 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:00,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:00,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:00,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:00,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:00,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:00,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:00,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:00,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:00,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:00,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:00,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:00,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:00,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:00,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:00,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:00,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:00,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:00,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:00,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:00,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:00,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:00,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:00,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:00,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:00,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:00,745 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_43ae3da9-d5fe-46f7-8009-581457037c51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e337846cb6422c78c02a79ae7748bdbce67db4c4 [2020-11-22 12:57:01,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:01,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:01,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:01,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:01,083 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:01,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label22.c [2020-11-22 12:57:01,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/data/b2be4fdaf/0bc9839f2197440aadfdd6d59612441b/FLAG0ee329c72 [2020-11-22 12:57:01,773 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:01,773 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/sv-benchmarks/c/eca-rers2012/Problem01_label22.c [2020-11-22 12:57:01,784 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/data/b2be4fdaf/0bc9839f2197440aadfdd6d59612441b/FLAG0ee329c72 [2020-11-22 12:57:01,992 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/data/b2be4fdaf/0bc9839f2197440aadfdd6d59612441b [2020-11-22 12:57:01,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:01,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:01,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:01,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:02,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:02,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:01" (1/1) ... [2020-11-22 12:57:02,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e4a4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02, skipping insertion in model container [2020-11-22 12:57:02,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:01" (1/1) ... [2020-11-22 12:57:02,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:02,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:02,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:02,571 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:02,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:02,726 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:02,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02 WrapperNode [2020-11-22 12:57:02,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:02,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:02,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:02,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:02,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:02,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:02,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:02,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:02,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:02,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:02,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:02,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:02,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/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 12:57:02,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:02,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:02,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:02,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:05,089 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:05,090 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:57:05,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:05 BoogieIcfgContainer [2020-11-22 12:57:05,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:05,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:05,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:05,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:05,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:01" (1/3) ... [2020-11-22 12:57:05,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c5623f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:05, skipping insertion in model container [2020-11-22 12:57:05,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (2/3) ... [2020-11-22 12:57:05,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c5623f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:05, skipping insertion in model container [2020-11-22 12:57:05,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:05" (3/3) ... [2020-11-22 12:57:05,105 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-11-22 12:57:05,119 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:05,123 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:05,135 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:05,158 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:05,158 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:05,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:05,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:05,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:05,159 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:05,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:05,160 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 12:57:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 12:57:05,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:05,182 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 12:57:05,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:05,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1520714349, now seen corresponding path program 1 times [2020-11-22 12:57:05,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:05,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143707336] [2020-11-22 12:57:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:05,727 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 12:57:05,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143707336] [2020-11-22 12:57:05,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:05,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:05,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291719071] [2020-11-22 12:57:05,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:05,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:05,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:05,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:05,755 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-22 12:57:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:06,615 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-22 12:57:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:06,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-22 12:57:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:06,640 INFO L225 Difference]: With dead ends: 297 [2020-11-22 12:57:06,652 INFO L226 Difference]: Without dead ends: 216 [2020-11-22 12:57:06,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-22 12:57:06,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-22 12:57:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 12:57:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-22 12:57:06,707 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-22 12:57:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:06,708 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-22 12:57:06,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-22 12:57:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 12:57:06,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:06,712 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 12:57:06,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:06,713 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:06,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:06,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1832084420, now seen corresponding path program 1 times [2020-11-22 12:57:06,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:06,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880776373] [2020-11-22 12:57:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:06,949 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 12:57:06,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880776373] [2020-11-22 12:57:06,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:06,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:06,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007803778] [2020-11-22 12:57:06,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:06,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:06,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:06,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:06,957 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-22 12:57:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:07,675 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-11-22 12:57:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:07,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-22 12:57:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:07,678 INFO L225 Difference]: With dead ends: 500 [2020-11-22 12:57:07,679 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 12:57:07,680 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 12:57:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 12:57:07,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-11-22 12:57:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 12:57:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-22 12:57:07,705 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-22 12:57:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:07,705 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-22 12:57:07,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:07,706 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-22 12:57:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-22 12:57:07,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:07,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2020-11-22 12:57:07,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:07,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1009058376, now seen corresponding path program 1 times [2020-11-22 12:57:07,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:07,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772216454] [2020-11-22 12:57:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:07,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772216454] [2020-11-22 12:57:07,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:07,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:07,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108404291] [2020-11-22 12:57:07,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:07,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:07,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:07,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:07,804 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-22 12:57:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:08,314 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-22 12:57:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:08,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-22 12:57:08,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:08,317 INFO L225 Difference]: With dead ends: 573 [2020-11-22 12:57:08,317 INFO L226 Difference]: Without dead ends: 358 [2020-11-22 12:57:08,319 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 12:57:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-22 12:57:08,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-22 12:57:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-22 12:57:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2020-11-22 12:57:08,342 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2020-11-22 12:57:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:08,342 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2020-11-22 12:57:08,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2020-11-22 12:57:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 12:57:08,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:08,348 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-11-22 12:57:08,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:08,349 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:08,350 INFO L82 PathProgramCache]: Analyzing trace with hash 554923454, now seen corresponding path program 1 times [2020-11-22 12:57:08,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:08,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343599340] [2020-11-22 12:57:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-22 12:57:08,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343599340] [2020-11-22 12:57:08,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:08,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:08,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002394182] [2020-11-22 12:57:08,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:08,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:08,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:08,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:08,456 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2020-11-22 12:57:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:08,883 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2020-11-22 12:57:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:08,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 12:57:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:08,896 INFO L225 Difference]: With dead ends: 999 [2020-11-22 12:57:08,896 INFO L226 Difference]: Without dead ends: 642 [2020-11-22 12:57:08,897 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 12:57:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-22 12:57:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-22 12:57:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 12:57:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2020-11-22 12:57:08,945 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 111 [2020-11-22 12:57:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:08,946 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2020-11-22 12:57:08,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2020-11-22 12:57:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-22 12:57:08,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:08,954 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-22 12:57:08,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:08,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:08,955 INFO L82 PathProgramCache]: Analyzing trace with hash 73609658, now seen corresponding path program 1 times [2020-11-22 12:57:08,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:08,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513545] [2020-11-22 12:57:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-22 12:57:09,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513545] [2020-11-22 12:57:09,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:09,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:09,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109669010] [2020-11-22 12:57:09,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:09,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:09,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:09,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:09,072 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2020-11-22 12:57:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:09,590 INFO L93 Difference]: Finished difference Result 1283 states and 1752 transitions. [2020-11-22 12:57:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:09,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-11-22 12:57:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:09,594 INFO L225 Difference]: With dead ends: 1283 [2020-11-22 12:57:09,594 INFO L226 Difference]: Without dead ends: 713 [2020-11-22 12:57:09,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 12:57:09,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-22 12:57:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-11-22 12:57:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-22 12:57:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2020-11-22 12:57:09,615 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2020-11-22 12:57:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:09,615 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2020-11-22 12:57:09,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2020-11-22 12:57:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-22 12:57:09,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:09,618 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-11-22 12:57:09,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:57:09,619 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:09,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1828608471, now seen corresponding path program 1 times [2020-11-22 12:57:09,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:09,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047014136] [2020-11-22 12:57:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-22 12:57:09,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047014136] [2020-11-22 12:57:09,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:09,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:09,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265868699] [2020-11-22 12:57:09,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:09,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:09,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:09,719 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2020-11-22 12:57:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:10,313 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2020-11-22 12:57:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:10,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-11-22 12:57:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:10,319 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 12:57:10,320 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 12:57:10,321 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 12:57:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 12:57:10,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-22 12:57:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:57:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2020-11-22 12:57:10,350 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2020-11-22 12:57:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:10,351 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2020-11-22 12:57:10,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2020-11-22 12:57:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-22 12:57:10,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:10,363 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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] [2020-11-22 12:57:10,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:57:10,363 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:10,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1124330168, now seen corresponding path program 1 times [2020-11-22 12:57:10,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:10,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316794150] [2020-11-22 12:57:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:57:10,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316794150] [2020-11-22 12:57:10,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:10,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:10,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000514052] [2020-11-22 12:57:10,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:10,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:10,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:10,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:10,555 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2020-11-22 12:57:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:10,996 INFO L93 Difference]: Finished difference Result 1709 states and 2194 transitions. [2020-11-22 12:57:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:10,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-11-22 12:57:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,002 INFO L225 Difference]: With dead ends: 1709 [2020-11-22 12:57:11,003 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:57:11,004 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 12:57:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:57:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-22 12:57:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:57:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1015 transitions. [2020-11-22 12:57:11,027 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1015 transitions. Word has length 167 [2020-11-22 12:57:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,028 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1015 transitions. [2020-11-22 12:57:11,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1015 transitions. [2020-11-22 12:57:11,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-22 12:57:11,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,031 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:11,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:57:11,032 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1710313184, now seen corresponding path program 1 times [2020-11-22 12:57:11,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646455307] [2020-11-22 12:57:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-22 12:57:11,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646455307] [2020-11-22 12:57:11,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:11,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:11,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085768790] [2020-11-22 12:57:11,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:11,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:11,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:11,348 INFO L87 Difference]: Start difference. First operand 784 states and 1015 transitions. Second operand 4 states. [2020-11-22 12:57:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,899 INFO L93 Difference]: Finished difference Result 1733 states and 2206 transitions. [2020-11-22 12:57:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:11,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2020-11-22 12:57:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,906 INFO L225 Difference]: With dead ends: 1733 [2020-11-22 12:57:11,906 INFO L226 Difference]: Without dead ends: 950 [2020-11-22 12:57:11,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 12:57:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-11-22 12:57:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2020-11-22 12:57:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 12:57:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2020-11-22 12:57:11,931 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 210 [2020-11-22 12:57:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,932 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2020-11-22 12:57:11,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2020-11-22 12:57:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-11-22 12:57:11,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,937 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 3, 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] [2020-11-22 12:57:11,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:57:11,937 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1559669433, now seen corresponding path program 1 times [2020-11-22 12:57:11,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115567653] [2020-11-22 12:57:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-11-22 12:57:12,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115567653] [2020-11-22 12:57:12,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:12,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:12,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018471602] [2020-11-22 12:57:12,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:12,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:12,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:12,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:12,097 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2020-11-22 12:57:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:12,487 INFO L93 Difference]: Finished difference Result 1851 states and 2331 transitions. [2020-11-22 12:57:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:12,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2020-11-22 12:57:12,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:12,494 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 12:57:12,494 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 12:57:12,496 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 12:57:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 12:57:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-22 12:57:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 12:57:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-22 12:57:12,523 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 223 [2020-11-22 12:57:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:12,523 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-22 12:57:12,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-22 12:57:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-22 12:57:12,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:12,530 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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, 1] [2020-11-22 12:57:12,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:57:12,530 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:12,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1492291223, now seen corresponding path program 1 times [2020-11-22 12:57:12,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:12,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647959088] [2020-11-22 12:57:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 260 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:57:12,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647959088] [2020-11-22 12:57:12,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721556067] [2020-11-22 12:57:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/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 12:57:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:13,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:13,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-11-22 12:57:13,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-11-22 12:57:13,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:13,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-22 12:57:13,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967689685] [2020-11-22 12:57:13,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:13,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:13,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:13,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:13,353 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-22 12:57:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:13,721 INFO L93 Difference]: Finished difference Result 2277 states and 2800 transitions. [2020-11-22 12:57:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:13,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-11-22 12:57:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:13,729 INFO L225 Difference]: With dead ends: 2277 [2020-11-22 12:57:13,729 INFO L226 Difference]: Without dead ends: 1281 [2020-11-22 12:57:13,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-22 12:57:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-11-22 12:57:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 12:57:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1324 transitions. [2020-11-22 12:57:13,767 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1324 transitions. Word has length 232 [2020-11-22 12:57:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:13,767 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1324 transitions. [2020-11-22 12:57:13,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1324 transitions. [2020-11-22 12:57:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-22 12:57:13,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:13,772 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 12:57:14,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 12:57:14,000 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:14,001 INFO L82 PathProgramCache]: Analyzing trace with hash 637075289, now seen corresponding path program 1 times [2020-11-22 12:57:14,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:14,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378585377] [2020-11-22 12:57:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-11-22 12:57:14,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378585377] [2020-11-22 12:57:14,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:14,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:14,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003010106] [2020-11-22 12:57:14,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:14,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:14,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:14,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:14,272 INFO L87 Difference]: Start difference. First operand 1068 states and 1324 transitions. Second operand 3 states. [2020-11-22 12:57:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:14,811 INFO L93 Difference]: Finished difference Result 2206 states and 2763 transitions. [2020-11-22 12:57:14,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:14,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-11-22 12:57:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:14,817 INFO L225 Difference]: With dead ends: 2206 [2020-11-22 12:57:14,817 INFO L226 Difference]: Without dead ends: 1139 [2020-11-22 12:57:14,818 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 12:57:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-22 12:57:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-11-22 12:57:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 12:57:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2020-11-22 12:57:14,847 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 235 [2020-11-22 12:57:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:14,847 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2020-11-22 12:57:14,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2020-11-22 12:57:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-22 12:57:14,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:14,853 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1] [2020-11-22 12:57:14,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 12:57:14,853 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:14,854 INFO L82 PathProgramCache]: Analyzing trace with hash -588452619, now seen corresponding path program 1 times [2020-11-22 12:57:14,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:14,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493206772] [2020-11-22 12:57:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:57:15,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493206772] [2020-11-22 12:57:15,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30928992] [2020-11-22 12:57:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:15,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:15,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-22 12:57:15,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-22 12:57:15,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:15,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-22 12:57:15,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032695312] [2020-11-22 12:57:15,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:15,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:15,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:15,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:15,586 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2020-11-22 12:57:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:15,999 INFO L93 Difference]: Finished difference Result 2346 states and 2883 transitions. [2020-11-22 12:57:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:16,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-11-22 12:57:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:16,000 INFO L225 Difference]: With dead ends: 2346 [2020-11-22 12:57:16,000 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:16,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:16,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-11-22 12:57:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:16,004 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:16,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:16,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:16,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-22 12:57:16,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:16,464 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-11-22 12:57:16,568 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 12:57:16,569 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 12:57:16,570 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 12:57:16,571 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse1 (= ~a16~0 6)) (.cse3 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1)) (.cse4 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1) .cse2) (and .cse1 .cse3) (and .cse4 .cse3) (and .cse0 .cse4))) [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:16,572 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 12:57:16,573 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse1 (= ~a16~0 6)) (.cse3 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1)) (.cse4 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1) .cse2) (and .cse1 .cse3) (and .cse4 .cse3) (and .cse0 .cse4))) [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 12:57:16,574 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 12:57:16,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:16 BoogieIcfgContainer [2020-11-22 12:57:16,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:16,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:16,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:16,603 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:16,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:05" (3/4) ... [2020-11-22 12:57:16,606 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:16,636 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 12:57:16,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:57:16,639 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:57:16,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 12:57:16,765 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_43ae3da9-d5fe-46f7-8009-581457037c51/bin/utaipan/witness.graphml [2020-11-22 12:57:16,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:16,766 INFO L168 Benchmark]: Toolchain (without parser) took 14770.35 ms. Allocated memory was 98.6 MB in the beginning and 383.8 MB in the end (delta: 285.2 MB). Free memory was 62.4 MB in the beginning and 165.4 MB in the end (delta: -103.0 MB). Peak memory consumption was 182.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:16,766 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 71.9 MB in the beginning and 71.8 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:16,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.92 ms. Allocated memory is still 98.6 MB. Free memory was 62.1 MB in the beginning and 58.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:16,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.78 ms. Allocated memory is still 98.6 MB. Free memory was 58.5 MB in the beginning and 53.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:16,767 INFO L168 Benchmark]: Boogie Preprocessor took 88.02 ms. Allocated memory is still 98.6 MB. Free memory was 53.1 MB in the beginning and 48.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:16,768 INFO L168 Benchmark]: RCFGBuilder took 2173.19 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 48.4 MB in the beginning and 74.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:16,768 INFO L168 Benchmark]: TraceAbstraction took 11505.47 ms. Allocated memory was 130.0 MB in the beginning and 383.8 MB in the end (delta: 253.8 MB). Free memory was 74.2 MB in the beginning and 181.1 MB in the end (delta: -106.9 MB). Peak memory consumption was 145.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:16,769 INFO L168 Benchmark]: Witness Printer took 162.92 ms. Allocated memory is still 383.8 MB. Free memory was 181.1 MB in the beginning and 165.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:16,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 71.9 MB in the beginning and 71.8 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 730.92 ms. Allocated memory is still 98.6 MB. Free memory was 62.1 MB in the beginning and 58.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.78 ms. Allocated memory is still 98.6 MB. Free memory was 58.5 MB in the beginning and 53.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.02 ms. Allocated memory is still 98.6 MB. Free memory was 53.1 MB in the beginning and 48.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2173.19 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 48.4 MB in the beginning and 74.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11505.47 ms. Allocated memory was 130.0 MB in the beginning and 383.8 MB in the end (delta: 253.8 MB). Free memory was 74.2 MB in the beginning and 181.1 MB in the end (delta: -106.9 MB). Peak memory consumption was 145.8 MB. Max. memory is 16.1 GB. * Witness Printer took 162.92 ms. Allocated memory is still 383.8 MB. Free memory was 181.1 MB in the beginning and 165.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 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 && a16 == 6) && !(a7 == 1)) && 15 <= a8) || ((a21 == 1 && a20 == 1) && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a21 == 1 && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a21 == 1 && a16 == 6) && !(a7 == 1)) && 15 <= a8) || ((a21 == 1 && a20 == 1) && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a21 == 1 && a16 <= 5) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.0s, OverallIterations: 12, TraceHistogramMax: 8, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 593 SDtfs, 1109 SDslu, 70 SDs, 0 SdLazy, 3016 SolverSat, 789 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 987 GetRequests, 960 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 805 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 44 NumberOfFragments, 95 HoareAnnotationTreeSize, 3 FomulaSimplifications, 13134 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 148 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 2381 NumberOfCodeBlocks, 2381 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2838 ConstructedInterpolants, 0 QuantifiedInterpolants, 1593616 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1107 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 3746/3943 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...