./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.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_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c -s /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/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 dcb309f6feccb6bb3140aa826f6766a325e42843 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:34:31,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:34:31,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:34:31,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:34:31,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:34:31,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:34:31,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:34:31,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:34:31,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:34:31,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:34:31,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:34:31,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:34:31,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:34:31,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:34:31,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:34:31,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:34:31,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:34:31,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:34:31,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:34:31,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:34:31,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:34:31,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:34:31,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:34:31,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:34:31,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:34:31,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:34:31,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:34:31,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:34:31,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:34:31,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:34:31,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:34:31,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:34:31,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:34:31,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:34:31,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:34:31,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:34:31,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:34:31,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:34:31,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:34:31,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:34:31,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:34:31,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:34:31,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:34:31,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:34:31,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:34:31,839 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:34:31,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:34:31,839 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:34:31,839 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:34:31,840 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:34:31,840 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:34:31,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:34:31,840 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:34:31,840 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:34:31,841 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:34:31,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:34:31,841 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:34:31,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:34:31,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:34:31,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:34:31,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:34:31,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:34:31,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:34:31,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:34:31,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:34:31,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:34:31,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:34:31,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:34:31,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:34:31,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:34:31,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:34:31,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:34:31,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:34:31,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:34:31,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:34:31,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:34:31,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:34:31,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:34:31,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:34:31,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:34:31,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:34:31,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:34:31,846 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_122acb10-15e6-435c-88a0-52b05eafa3a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcb309f6feccb6bb3140aa826f6766a325e42843 [2020-11-28 07:34:32,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:34:32,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:34:32,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:34:32,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:34:32,098 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:34:32,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2020-11-28 07:34:32,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/data/758e8df16/cdae0757b95641d0bd100af2a09be962/FLAGae8116e8d [2020-11-28 07:34:32,777 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:34:32,778 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2020-11-28 07:34:32,794 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/data/758e8df16/cdae0757b95641d0bd100af2a09be962/FLAGae8116e8d [2020-11-28 07:34:33,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/data/758e8df16/cdae0757b95641d0bd100af2a09be962 [2020-11-28 07:34:33,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:34:33,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:34:33,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:33,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:34:33,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:34:33,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4c86be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33, skipping insertion in model container [2020-11-28 07:34:33,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:34:33,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:34:33,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:33,500 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:34:33,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:33,687 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:34:33,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33 WrapperNode [2020-11-28 07:34:33,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:33,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:33,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:34:33,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:34:33,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:33,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:34:33,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:34:33,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:34:33,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... [2020-11-28 07:34:33,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:34:33,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:34:33,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:34:33,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:34:33,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/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 [2020-11-28 07:34:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:34:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:34:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:34:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:34:36,212 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:34:36,213 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:34:36,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:36 BoogieIcfgContainer [2020-11-28 07:34:36,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:34:36,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:34:36,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:34:36,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:34:36,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:34:33" (1/3) ... [2020-11-28 07:34:36,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b42bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:36, skipping insertion in model container [2020-11-28 07:34:36,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:33" (2/3) ... [2020-11-28 07:34:36,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b42bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:36, skipping insertion in model container [2020-11-28 07:34:36,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:36" (3/3) ... [2020-11-28 07:34:36,223 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label27.c [2020-11-28 07:34:36,233 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:34:36,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:34:36,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:34:36,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:34:36,281 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:34:36,281 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:34:36,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:34:36,282 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:34:36,282 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:34:36,282 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:34:36,282 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:34:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:34:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:34:36,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:36,310 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] [2020-11-28 07:34:36,312 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:36,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1520704365, now seen corresponding path program 1 times [2020-11-28 07:34:36,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:36,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558153480] [2020-11-28 07:34:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:36,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558153480] [2020-11-28 07:34:36,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:36,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:36,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936544668] [2020-11-28 07:34:36,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:36,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:36,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:36,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:36,799 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:34:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:37,401 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:34:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:37,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:34:37,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:37,423 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:34:37,428 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:34:37,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:37,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:34:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:34:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:34:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-28 07:34:37,503 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-28 07:34:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:37,504 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-28 07:34:37,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:37,504 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-28 07:34:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:34:37,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:37,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:37,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:34:37,508 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:37,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:37,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1975141822, now seen corresponding path program 1 times [2020-11-28 07:34:37,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:37,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055037286] [2020-11-28 07:34:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:37,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055037286] [2020-11-28 07:34:37,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:37,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:37,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047252056] [2020-11-28 07:34:37,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:37,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:37,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:37,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:37,597 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-28 07:34:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:38,142 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-28 07:34:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:38,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:34:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:38,145 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:34:38,146 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:34:38,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:34:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:34:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:34:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2020-11-28 07:34:38,180 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 77 [2020-11-28 07:34:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:38,181 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2020-11-28 07:34:38,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2020-11-28 07:34:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:34:38,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:38,190 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] [2020-11-28 07:34:38,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:34:38,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:38,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1832094404, now seen corresponding path program 1 times [2020-11-28 07:34:38,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:38,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132249215] [2020-11-28 07:34:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:38,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132249215] [2020-11-28 07:34:38,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:38,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:38,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519049268] [2020-11-28 07:34:38,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:38,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:38,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:38,337 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 3 states. [2020-11-28 07:34:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:38,839 INFO L93 Difference]: Finished difference Result 715 states and 1252 transitions. [2020-11-28 07:34:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:38,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-28 07:34:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:38,844 INFO L225 Difference]: With dead ends: 715 [2020-11-28 07:34:38,845 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:34:38,847 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 [2020-11-28 07:34:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:34:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-28 07:34:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:34:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 706 transitions. [2020-11-28 07:34:38,870 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 706 transitions. Word has length 78 [2020-11-28 07:34:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:38,871 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 706 transitions. [2020-11-28 07:34:38,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 706 transitions. [2020-11-28 07:34:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-28 07:34:38,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:38,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:38,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:34:38,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:38,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1448055346, now seen corresponding path program 1 times [2020-11-28 07:34:38,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:38,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306555538] [2020-11-28 07:34:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:38,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306555538] [2020-11-28 07:34:38,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:38,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:38,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689884098] [2020-11-28 07:34:38,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:38,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:38,994 INFO L87 Difference]: Start difference. First operand 429 states and 706 transitions. Second operand 3 states. [2020-11-28 07:34:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:39,674 INFO L93 Difference]: Finished difference Result 1283 states and 2115 transitions. [2020-11-28 07:34:39,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:39,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-11-28 07:34:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:39,681 INFO L225 Difference]: With dead ends: 1283 [2020-11-28 07:34:39,681 INFO L226 Difference]: Without dead ends: 855 [2020-11-28 07:34:39,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-28 07:34:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-11-28 07:34:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-28 07:34:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1051 transitions. [2020-11-28 07:34:39,750 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1051 transitions. Word has length 82 [2020-11-28 07:34:39,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:39,751 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1051 transitions. [2020-11-28 07:34:39,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1051 transitions. [2020-11-28 07:34:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-28 07:34:39,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:39,754 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] [2020-11-28 07:34:39,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:34:39,754 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:39,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1009068360, now seen corresponding path program 1 times [2020-11-28 07:34:39,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:39,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555707928] [2020-11-28 07:34:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:39,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555707928] [2020-11-28 07:34:39,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:39,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:39,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622532540] [2020-11-28 07:34:39,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:34:39,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:34:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:34:39,851 INFO L87 Difference]: Start difference. First operand 713 states and 1051 transitions. Second operand 4 states. [2020-11-28 07:34:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:40,619 INFO L93 Difference]: Finished difference Result 2206 states and 3299 transitions. [2020-11-28 07:34:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:34:40,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-28 07:34:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:40,628 INFO L225 Difference]: With dead ends: 2206 [2020-11-28 07:34:40,629 INFO L226 Difference]: Without dead ends: 1494 [2020-11-28 07:34:40,630 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 [2020-11-28 07:34:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-11-28 07:34:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1352. [2020-11-28 07:34:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-11-28 07:34:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1864 transitions. [2020-11-28 07:34:40,685 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1864 transitions. Word has length 86 [2020-11-28 07:34:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:40,687 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1864 transitions. [2020-11-28 07:34:40,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:34:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1864 transitions. [2020-11-28 07:34:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-28 07:34:40,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:40,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:40,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:34:40,698 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:40,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1685115527, now seen corresponding path program 1 times [2020-11-28 07:34:40,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:40,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665946242] [2020-11-28 07:34:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:40,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665946242] [2020-11-28 07:34:40,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:40,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:40,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410931113] [2020-11-28 07:34:40,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:40,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:40,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:40,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:40,798 INFO L87 Difference]: Start difference. First operand 1352 states and 1864 transitions. Second operand 3 states. [2020-11-28 07:34:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:41,302 INFO L93 Difference]: Finished difference Result 2490 states and 3460 transitions. [2020-11-28 07:34:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:41,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-11-28 07:34:41,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:41,310 INFO L225 Difference]: With dead ends: 2490 [2020-11-28 07:34:41,310 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:34:41,312 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 [2020-11-28 07:34:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:34:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-28 07:34:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:34:41,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1110 transitions. [2020-11-28 07:34:41,348 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1110 transitions. Word has length 93 [2020-11-28 07:34:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:41,349 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1110 transitions. [2020-11-28 07:34:41,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1110 transitions. [2020-11-28 07:34:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-28 07:34:41,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:41,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:41,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:34:41,358 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:41,359 INFO L82 PathProgramCache]: Analyzing trace with hash -632920330, now seen corresponding path program 1 times [2020-11-28 07:34:41,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:41,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049757422] [2020-11-28 07:34:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-28 07:34:41,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049757422] [2020-11-28 07:34:41,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:41,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:41,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068397532] [2020-11-28 07:34:41,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:41,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:41,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:41,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:41,505 INFO L87 Difference]: Start difference. First operand 926 states and 1110 transitions. Second operand 3 states. [2020-11-28 07:34:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:41,914 INFO L93 Difference]: Finished difference Result 1993 states and 2383 transitions. [2020-11-28 07:34:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:41,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-11-28 07:34:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:41,921 INFO L225 Difference]: With dead ends: 1993 [2020-11-28 07:34:41,921 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:34:41,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:34:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-28 07:34:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:34:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1172 transitions. [2020-11-28 07:34:41,951 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1172 transitions. Word has length 127 [2020-11-28 07:34:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:41,951 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1172 transitions. [2020-11-28 07:34:41,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1172 transitions. [2020-11-28 07:34:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-28 07:34:41,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:41,955 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:41,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:34:41,956 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:41,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1221444656, now seen corresponding path program 1 times [2020-11-28 07:34:41,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:41,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480773762] [2020-11-28 07:34:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-28 07:34:42,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480773762] [2020-11-28 07:34:42,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:42,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:42,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439204650] [2020-11-28 07:34:42,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:34:42,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:42,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:34:42,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:34:42,111 INFO L87 Difference]: Start difference. First operand 997 states and 1172 transitions. Second operand 4 states. [2020-11-28 07:34:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:42,708 INFO L93 Difference]: Finished difference Result 2064 states and 2430 transitions. [2020-11-28 07:34:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:34:42,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-11-28 07:34:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:42,715 INFO L225 Difference]: With dead ends: 2064 [2020-11-28 07:34:42,715 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:34:42,716 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 [2020-11-28 07:34:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:34:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2020-11-28 07:34:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:34:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1159 transitions. [2020-11-28 07:34:42,744 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1159 transitions. Word has length 131 [2020-11-28 07:34:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:42,744 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1159 transitions. [2020-11-28 07:34:42,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:34:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1159 transitions. [2020-11-28 07:34:42,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-28 07:34:42,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:42,748 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:42,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:34:42,749 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:42,749 INFO L82 PathProgramCache]: Analyzing trace with hash -175188605, now seen corresponding path program 1 times [2020-11-28 07:34:42,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:42,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420323428] [2020-11-28 07:34:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:34:42,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420323428] [2020-11-28 07:34:42,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:42,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:42,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420744871] [2020-11-28 07:34:42,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:42,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:42,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:42,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:42,904 INFO L87 Difference]: Start difference. First operand 997 states and 1159 transitions. Second operand 3 states. [2020-11-28 07:34:43,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:43,287 INFO L93 Difference]: Finished difference Result 2135 states and 2470 transitions. [2020-11-28 07:34:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:43,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-28 07:34:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:43,295 INFO L225 Difference]: With dead ends: 2135 [2020-11-28 07:34:43,296 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:34:43,297 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 [2020-11-28 07:34:43,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:34:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2020-11-28 07:34:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:34:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1149 transitions. [2020-11-28 07:34:43,325 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1149 transitions. Word has length 148 [2020-11-28 07:34:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:43,326 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1149 transitions. [2020-11-28 07:34:43,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1149 transitions. [2020-11-28 07:34:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-28 07:34:43,331 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:43,332 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:43,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:34:43,332 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:43,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:43,332 INFO L82 PathProgramCache]: Analyzing trace with hash 316510955, now seen corresponding path program 1 times [2020-11-28 07:34:43,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:43,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215777829] [2020-11-28 07:34:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-28 07:34:43,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215777829] [2020-11-28 07:34:43,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:43,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:34:43,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979352725] [2020-11-28 07:34:43,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:34:43,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:43,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:34:43,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:34:43,523 INFO L87 Difference]: Start difference. First operand 997 states and 1149 transitions. Second operand 4 states. [2020-11-28 07:34:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:44,029 INFO L93 Difference]: Finished difference Result 2241 states and 2579 transitions. [2020-11-28 07:34:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:34:44,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-11-28 07:34:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:44,036 INFO L225 Difference]: With dead ends: 2241 [2020-11-28 07:34:44,036 INFO L226 Difference]: Without dead ends: 1245 [2020-11-28 07:34:44,039 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 [2020-11-28 07:34:44,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2020-11-28 07:34:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1068. [2020-11-28 07:34:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:34:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1209 transitions. [2020-11-28 07:34:44,074 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1209 transitions. Word has length 191 [2020-11-28 07:34:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:44,074 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1209 transitions. [2020-11-28 07:34:44,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:34:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1209 transitions. [2020-11-28 07:34:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-28 07:34:44,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:44,078 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:34:44,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:34:44,079 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:44,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:44,079 INFO L82 PathProgramCache]: Analyzing trace with hash -942305308, now seen corresponding path program 1 times [2020-11-28 07:34:44,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:44,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341524183] [2020-11-28 07:34:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-28 07:34:44,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341524183] [2020-11-28 07:34:44,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:44,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:44,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579528766] [2020-11-28 07:34:44,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:44,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:44,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:44,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:34:44,238 INFO L87 Difference]: Start difference. First operand 1068 states and 1209 transitions. Second operand 3 states. [2020-11-28 07:34:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:44,649 INFO L93 Difference]: Finished difference Result 2206 states and 2504 transitions. [2020-11-28 07:34:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:44,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-11-28 07:34:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:44,656 INFO L225 Difference]: With dead ends: 2206 [2020-11-28 07:34:44,656 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:34:44,658 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 [2020-11-28 07:34:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:34:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-11-28 07:34:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:34:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1183 transitions. [2020-11-28 07:34:44,687 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1183 transitions. Word has length 204 [2020-11-28 07:34:44,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:44,687 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1183 transitions. [2020-11-28 07:34:44,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:44,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1183 transitions. [2020-11-28 07:34:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-11-28 07:34:44,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:44,692 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:34:44,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:34:44,692 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:44,693 INFO L82 PathProgramCache]: Analyzing trace with hash 413829906, now seen corresponding path program 1 times [2020-11-28 07:34:44,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:44,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953992373] [2020-11-28 07:34:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-11-28 07:34:45,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953992373] [2020-11-28 07:34:45,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299965591] [2020-11-28 07:34:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/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 [2020-11-28 07:34:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:45,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:34:45,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-11-28 07:34:45,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-11-28 07:34:45,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:34:45,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:34:45,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007477591] [2020-11-28 07:34:45,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:34:45,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:45,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:34:45,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:45,610 INFO L87 Difference]: Start difference. First operand 1068 states and 1183 transitions. Second operand 3 states. [2020-11-28 07:34:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:46,030 INFO L93 Difference]: Finished difference Result 2488 states and 2763 transitions. [2020-11-28 07:34:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:34:46,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2020-11-28 07:34:46,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:46,031 INFO L225 Difference]: With dead ends: 2488 [2020-11-28 07:34:46,031 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:34:46,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:46,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:34:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:34:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:34:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:34:46,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2020-11-28 07:34:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:46,035 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:34:46,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:34:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:34:46,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:34:46,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 07:34:46,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:34:46,850 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-11-28 07:34:47,144 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-11-28 07:34:47,147 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:34:47,147 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:34:47,147 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:34:47,147 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:34:47,147 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:34:47,148 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:34:47,149 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:34:47,150 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:34:47,151 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:34:47,151 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:34:47,151 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:34:47,151 INFO L274 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:34:47,154 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:34:47,154 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:34:47,154 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:34:47,154 INFO L274 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-11-28 07:34:47,154 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse9 (= ~a20~0 1))) (let ((.cse5 (<= ~a16~0 4)) (.cse7 (= ~a17~0 1)) (.cse8 (= ~a21~0 1)) (.cse6 (<= ~a16~0 5)) (.cse1 (<= ~a7~0 0)) (.cse2 (not .cse9)) (.cse3 (<= ~a8~0 14)) (.cse4 (= ~a7~0 1)) (.cse0 (= ~a16~0 6))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse4 .cse6 .cse7) (and .cse5 .cse1 .cse7) (and .cse4 .cse8 .cse5 .cse7) (and .cse3 .cse8 .cse4) (and .cse8 .cse1 .cse9) (and .cse4 .cse2) (and .cse6 .cse1 .cse2) (and .cse3 .cse4 .cse0)))) [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:34:47,155 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:34:47,156 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:34:47,157 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:34:47,157 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:34:47,157 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:34:47,157 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse9 (= ~a20~0 1))) (let ((.cse5 (<= ~a16~0 4)) (.cse7 (= ~a17~0 1)) (.cse8 (= ~a21~0 1)) (.cse6 (<= ~a16~0 5)) (.cse1 (<= ~a7~0 0)) (.cse2 (not .cse9)) (.cse3 (<= ~a8~0 14)) (.cse4 (= ~a7~0 1)) (.cse0 (= ~a16~0 6))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse4 .cse6 .cse7) (and .cse5 .cse1 .cse7) (and .cse4 .cse8 .cse5 .cse7) (and .cse3 .cse8 .cse4) (and .cse8 .cse1 .cse9) (and .cse4 .cse2) (and .cse6 .cse1 .cse2) (and .cse3 .cse4 .cse0)))) [2020-11-28 07:34:47,157 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:34:47,157 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:34:47,157 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:34:47,157 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:34:47,158 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:34:47,158 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:34:47,158 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:34:47,158 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:34:47,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:34:47 BoogieIcfgContainer [2020-11-28 07:34:47,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:34:47,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:34:47,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:34:47,191 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:34:47,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:36" (3/4) ... [2020-11-28 07:34:47,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:34:47,223 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:34:47,224 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:34:47,226 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:34:47,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:34:47,397 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_122acb10-15e6-435c-88a0-52b05eafa3a9/bin/utaipan/witness.graphml [2020-11-28 07:34:47,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:34:47,398 INFO L168 Benchmark]: Toolchain (without parser) took 14392.63 ms. Allocated memory was 123.7 MB in the beginning and 270.5 MB in the end (delta: 146.8 MB). Free memory was 95.0 MB in the beginning and 145.8 MB in the end (delta: -50.8 MB). Peak memory consumption was 95.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:47,398 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:47,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.63 ms. Allocated memory is still 123.7 MB. Free memory was 94.7 MB in the beginning and 83.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:47,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.43 ms. Allocated memory is still 123.7 MB. Free memory was 83.8 MB in the beginning and 78.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:47,399 INFO L168 Benchmark]: Boogie Preprocessor took 57.85 ms. Allocated memory is still 123.7 MB. Free memory was 78.4 MB in the beginning and 73.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:47,400 INFO L168 Benchmark]: RCFGBuilder took 2368.54 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 73.7 MB in the beginning and 71.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:47,400 INFO L168 Benchmark]: TraceAbstraction took 10974.15 ms. Allocated memory was 155.2 MB in the beginning and 270.5 MB in the end (delta: 115.3 MB). Free memory was 71.8 MB in the beginning and 161.6 MB in the end (delta: -89.8 MB). Peak memory consumption was 106.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:47,400 INFO L168 Benchmark]: Witness Printer took 206.28 ms. Allocated memory is still 270.5 MB. Free memory was 161.6 MB in the beginning and 145.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:47,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 684.63 ms. Allocated memory is still 123.7 MB. Free memory was 94.7 MB in the beginning and 83.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.43 ms. Allocated memory is still 123.7 MB. Free memory was 83.8 MB in the beginning and 78.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.85 ms. Allocated memory is still 123.7 MB. Free memory was 78.4 MB in the beginning and 73.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2368.54 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 73.7 MB in the beginning and 71.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10974.15 ms. Allocated memory was 155.2 MB in the beginning and 270.5 MB in the end (delta: 115.3 MB). Free memory was 71.8 MB in the beginning and 161.6 MB in the end (delta: -89.8 MB). Peak memory consumption was 106.3 MB. Max. memory is 16.1 GB. * Witness Printer took 206.28 ms. Allocated memory is still 270.5 MB. Free memory was 161.6 MB in the beginning and 145.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 == 6 && a7 <= 0) && !(a20 == 1)) || ((a8 <= 14 && a7 == 1) && a16 <= 4)) || (((a8 <= 14 && a7 == 1) && a16 <= 5) && a17 == 1)) || ((a16 <= 4 && a7 <= 0) && a17 == 1)) || (((a7 == 1 && a21 == 1) && a16 <= 4) && a17 == 1)) || ((a8 <= 14 && a21 == 1) && a7 == 1)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a7 == 1 && !(a20 == 1))) || ((a16 <= 5 && a7 <= 0) && !(a20 == 1))) || ((a8 <= 14 && a7 == 1) && a16 == 6) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 == 6 && a7 <= 0) && !(a20 == 1)) || ((a8 <= 14 && a7 == 1) && a16 <= 4)) || (((a8 <= 14 && a7 == 1) && a16 <= 5) && a17 == 1)) || ((a16 <= 4 && a7 <= 0) && a17 == 1)) || (((a7 == 1 && a21 == 1) && a16 <= 4) && a17 == 1)) || ((a8 <= 14 && a21 == 1) && a7 == 1)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a7 == 1 && !(a20 == 1))) || ((a16 <= 5 && a7 <= 0) && !(a20 == 1))) || ((a8 <= 14 && a7 == 1) && a16 == 6) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.9s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 813 SDtfs, 846 SDslu, 54 SDs, 0 SdLazy, 2687 SolverSat, 708 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 465 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 887 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 215 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2742 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 674 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1720 NumberOfCodeBlocks, 1720 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1922 ConstructedInterpolants, 0 QuantifiedInterpolants, 1033873 SizeOfPredicates, 1 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 1671/1757 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...