./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label08.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_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/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 1fca60a421a39fa5f3f8d3bde13bd29dacb18de8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:41:22,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:22,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:22,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:22,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:22,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:22,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:22,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:22,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:22,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:22,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:22,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:22,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:22,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:22,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:22,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:22,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:22,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:22,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:22,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:22,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:22,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:22,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:22,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:22,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:22,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:22,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:22,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:22,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:22,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:22,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:22,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:22,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:22,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:22,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:22,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:22,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:22,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:22,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:22,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:22,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:22,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:41:22,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:22,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:22,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:22,774 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:22,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:22,775 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:22,778 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:22,778 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:22,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:22,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:22,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:22,780 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:22,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:22,781 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:22,781 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:22,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:22,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:22,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:22,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:22,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:22,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:41:22,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:22,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:41:22,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:41:22,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:22,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:41:22,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:22,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:41:22,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:22,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:22,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:22,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:22,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:22,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:22,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:41:22,791 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:22,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:22,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:41:22,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:22,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:22,793 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_cb2f8fc4-89d2-4601-8003-d47230060c37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fca60a421a39fa5f3f8d3bde13bd29dacb18de8 [2020-11-28 07:41:23,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:23,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:23,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:23,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:23,121 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:23,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2020-11-28 07:41:23,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/data/ef9f047ad/349798344ca640649076ef666e8e86af/FLAG3f510b725 [2020-11-28 07:41:23,807 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:23,809 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2020-11-28 07:41:23,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/data/ef9f047ad/349798344ca640649076ef666e8e86af/FLAG3f510b725 [2020-11-28 07:41:24,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/data/ef9f047ad/349798344ca640649076ef666e8e86af [2020-11-28 07:41:24,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:24,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:24,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:24,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:24,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:24,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4583db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24, skipping insertion in model container [2020-11-28 07:41:24,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:24,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:24,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:24,652 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:24,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:24,782 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:24,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24 WrapperNode [2020-11-28 07:41:24,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:24,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:24,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:24,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:24,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:24,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:24,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:24,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:24,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... [2020-11-28 07:41:24,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:24,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:24,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:24,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:24,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/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 07:41:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:41:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:25,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:27,401 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:27,401 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:41:27,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:27 BoogieIcfgContainer [2020-11-28 07:41:27,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:27,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:27,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:27,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:27,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:24" (1/3) ... [2020-11-28 07:41:27,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb0b0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:27, skipping insertion in model container [2020-11-28 07:41:27,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:24" (2/3) ... [2020-11-28 07:41:27,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb0b0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:27, skipping insertion in model container [2020-11-28 07:41:27,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:27" (3/3) ... [2020-11-28 07:41:27,412 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-11-28 07:41:27,422 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:27,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:41:27,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:41:27,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:27,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:27,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:27,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:27,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:27,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:27,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:27,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:41:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:41:27,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:27,498 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 07:41:27,499 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:27,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1520710765, now seen corresponding path program 1 times [2020-11-28 07:41:27,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:27,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646928744] [2020-11-28 07:41:27,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:27,928 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 07:41:27,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646928744] [2020-11-28 07:41:27,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:27,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:27,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880017715] [2020-11-28 07:41:27,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:27,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:27,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:27,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:27,953 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:41:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:28,537 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:41:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:28,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:41:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:28,553 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:41:28,554 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:41:28,557 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 07:41:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:41:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:41:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:41:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2020-11-28 07:41:28,629 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2020-11-28 07:41:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:28,630 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2020-11-28 07:41:28,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2020-11-28 07:41:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-28 07:41:28,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:28,634 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-11-28 07:41:28,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:41:28,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:28,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:28,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1531541593, now seen corresponding path program 1 times [2020-11-28 07:41:28,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:28,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121871708] [2020-11-28 07:41:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:41:28,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121871708] [2020-11-28 07:41:28,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:28,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:28,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213148571] [2020-11-28 07:41:28,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:28,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:28,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:28,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:28,833 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 3 states. [2020-11-28 07:41:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:29,281 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2020-11-28 07:41:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:29,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-11-28 07:41:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:29,285 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:41:29,285 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:41:29,289 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 07:41:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:41:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:41:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:41:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-11-28 07:41:29,322 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2020-11-28 07:41:29,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:29,325 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-11-28 07:41:29,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:29,325 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-11-28 07:41:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 07:41:29,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:29,338 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:29,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:41:29,339 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:29,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2064956379, now seen corresponding path program 1 times [2020-11-28 07:41:29,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:29,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215348446] [2020-11-28 07:41:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:29,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215348446] [2020-11-28 07:41:29,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:29,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:29,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057490704] [2020-11-28 07:41:29,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:29,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:29,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:29,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:29,550 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-11-28 07:41:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:30,263 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-11-28 07:41:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:30,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-28 07:41:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:30,267 INFO L225 Difference]: With dead ends: 715 [2020-11-28 07:41:30,267 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:41:30,269 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 07:41:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:41:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-28 07:41:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:41:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-11-28 07:41:30,307 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-11-28 07:41:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:30,307 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-11-28 07:41:30,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-11-28 07:41:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-28 07:41:30,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:30,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:30,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:41:30,310 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:30,310 INFO L82 PathProgramCache]: Analyzing trace with hash -480430811, now seen corresponding path program 1 times [2020-11-28 07:41:30,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:30,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111401691] [2020-11-28 07:41:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:41:30,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111401691] [2020-11-28 07:41:30,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:30,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:30,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956382549] [2020-11-28 07:41:30,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:30,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:30,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:30,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:30,383 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-11-28 07:41:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:30,801 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-11-28 07:41:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:30,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-28 07:41:30,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:30,805 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:41:30,805 INFO L226 Difference]: Without dead ends: 571 [2020-11-28 07:41:30,807 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 07:41:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-28 07:41:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-11-28 07:41:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:41:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-11-28 07:41:30,821 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-11-28 07:41:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:30,822 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-11-28 07:41:30,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-11-28 07:41:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:41:30,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:30,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:30,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:41:30,825 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:30,825 INFO L82 PathProgramCache]: Analyzing trace with hash -363770657, now seen corresponding path program 1 times [2020-11-28 07:41:30,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:30,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905180882] [2020-11-28 07:41:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:41:30,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905180882] [2020-11-28 07:41:30,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:30,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:30,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086518857] [2020-11-28 07:41:30,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:30,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:30,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:30,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:30,907 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2020-11-28 07:41:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:31,509 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2020-11-28 07:41:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:31,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-28 07:41:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:31,525 INFO L225 Difference]: With dead ends: 1354 [2020-11-28 07:41:31,525 INFO L226 Difference]: Without dead ends: 784 [2020-11-28 07:41:31,527 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 07:41:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-11-28 07:41:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2020-11-28 07:41:31,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:41:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 997 transitions. [2020-11-28 07:41:31,564 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 997 transitions. Word has length 113 [2020-11-28 07:41:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:31,564 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 997 transitions. [2020-11-28 07:41:31,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 997 transitions. [2020-11-28 07:41:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-28 07:41:31,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:31,570 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:31,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:41:31,571 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash -789984297, now seen corresponding path program 1 times [2020-11-28 07:41:31,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:31,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678246897] [2020-11-28 07:41:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:41:31,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678246897] [2020-11-28 07:41:31,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:31,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:31,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437297454] [2020-11-28 07:41:31,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:31,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:31,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:31,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:31,675 INFO L87 Difference]: Start difference. First operand 784 states and 997 transitions. Second operand 3 states. [2020-11-28 07:41:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:32,064 INFO L93 Difference]: Finished difference Result 1851 states and 2331 transitions. [2020-11-28 07:41:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:32,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-11-28 07:41:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:32,071 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:41:32,071 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:41:32,072 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 07:41:32,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:41:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-28 07:41:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:41:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1174 transitions. [2020-11-28 07:41:32,101 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1174 transitions. Word has length 134 [2020-11-28 07:41:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:32,101 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1174 transitions. [2020-11-28 07:41:32,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1174 transitions. [2020-11-28 07:41:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-11-28 07:41:32,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:32,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:41:32,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:41:32,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:32,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1273826145, now seen corresponding path program 1 times [2020-11-28 07:41:32,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:32,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240953042] [2020-11-28 07:41:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:41:32,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240953042] [2020-11-28 07:41:32,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:32,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:32,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372581631] [2020-11-28 07:41:32,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:32,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:32,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:32,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:32,257 INFO L87 Difference]: Start difference. First operand 926 states and 1174 transitions. Second operand 3 states. [2020-11-28 07:41:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:32,614 INFO L93 Difference]: Finished difference Result 1851 states and 2347 transitions. [2020-11-28 07:41:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:32,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-11-28 07:41:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:32,620 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:41:32,620 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:41:32,622 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 07:41:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:41:32,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-11-28 07:41:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:41:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1160 transitions. [2020-11-28 07:41:32,645 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1160 transitions. Word has length 150 [2020-11-28 07:41:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:32,645 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1160 transitions. [2020-11-28 07:41:32,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1160 transitions. [2020-11-28 07:41:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-28 07:41:32,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:32,649 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:32,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:41:32,649 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:32,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:32,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2031266267, now seen corresponding path program 1 times [2020-11-28 07:41:32,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:32,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461254297] [2020-11-28 07:41:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:41:32,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461254297] [2020-11-28 07:41:32,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:32,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:32,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160145470] [2020-11-28 07:41:32,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:32,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:32,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:32,817 INFO L87 Difference]: Start difference. First operand 926 states and 1160 transitions. Second operand 4 states. [2020-11-28 07:41:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:33,322 INFO L93 Difference]: Finished difference Result 1922 states and 2401 transitions. [2020-11-28 07:41:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:33,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-28 07:41:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:33,328 INFO L225 Difference]: With dead ends: 1922 [2020-11-28 07:41:33,328 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:41:33,329 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 07:41:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:41:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-28 07:41:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:41:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1229 transitions. [2020-11-28 07:41:33,356 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1229 transitions. Word has length 154 [2020-11-28 07:41:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:33,357 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1229 transitions. [2020-11-28 07:41:33,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1229 transitions. [2020-11-28 07:41:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:41:33,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:33,361 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 07:41:33,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:41:33,363 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:33,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:33,363 INFO L82 PathProgramCache]: Analyzing trace with hash -536184974, now seen corresponding path program 1 times [2020-11-28 07:41:33,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:33,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499089482] [2020-11-28 07:41:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-28 07:41:33,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499089482] [2020-11-28 07:41:33,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:33,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:33,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341569801] [2020-11-28 07:41:33,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:33,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:33,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:33,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:33,515 INFO L87 Difference]: Start difference. First operand 997 states and 1229 transitions. Second operand 3 states. [2020-11-28 07:41:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:33,877 INFO L93 Difference]: Finished difference Result 2277 states and 2822 transitions. [2020-11-28 07:41:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:33,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:41:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:33,884 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:41:33,884 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:41:33,886 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 07:41:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:41:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-11-28 07:41:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:41:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1321 transitions. [2020-11-28 07:41:33,915 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1321 transitions. Word has length 171 [2020-11-28 07:41:33,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:33,916 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1321 transitions. [2020-11-28 07:41:33,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1321 transitions. [2020-11-28 07:41:33,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-11-28 07:41:33,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:33,922 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:33,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:41:33,922 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1249874242, now seen corresponding path program 1 times [2020-11-28 07:41:33,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:33,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020080631] [2020-11-28 07:41:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-28 07:41:34,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020080631] [2020-11-28 07:41:34,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:34,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:34,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907054607] [2020-11-28 07:41:34,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:34,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:34,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:34,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:34,071 INFO L87 Difference]: Start difference. First operand 1068 states and 1321 transitions. Second operand 3 states. [2020-11-28 07:41:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:34,440 INFO L93 Difference]: Finished difference Result 2277 states and 2794 transitions. [2020-11-28 07:41:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:34,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-11-28 07:41:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:34,446 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:41:34,447 INFO L226 Difference]: Without dead ends: 1210 [2020-11-28 07:41:34,448 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 07:41:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-28 07:41:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-11-28 07:41:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:41:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1374 transitions. [2020-11-28 07:41:34,477 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1374 transitions. Word has length 233 [2020-11-28 07:41:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:34,478 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1374 transitions. [2020-11-28 07:41:34,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1374 transitions. [2020-11-28 07:41:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-11-28 07:41:34,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:34,483 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-11-28 07:41:34,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:41:34,483 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:34,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1419631497, now seen corresponding path program 1 times [2020-11-28 07:41:34,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:34,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141318834] [2020-11-28 07:41:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 230 proven. 35 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-28 07:41:34,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141318834] [2020-11-28 07:41:34,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164270777] [2020-11-28 07:41:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/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 07:41:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:34,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:34,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-11-28 07:41:35,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-11-28 07:41:35,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:35,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:41:35,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807852891] [2020-11-28 07:41:35,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:35,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:35,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:41:35,242 INFO L87 Difference]: Start difference. First operand 1139 states and 1374 transitions. Second operand 3 states. [2020-11-28 07:41:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:35,767 INFO L93 Difference]: Finished difference Result 2490 states and 3051 transitions. [2020-11-28 07:41:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:35,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-11-28 07:41:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:35,774 INFO L225 Difference]: With dead ends: 2490 [2020-11-28 07:41:35,774 INFO L226 Difference]: Without dead ends: 1352 [2020-11-28 07:41:35,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:41:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-28 07:41:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2020-11-28 07:41:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-11-28 07:41:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1583 transitions. [2020-11-28 07:41:35,814 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1583 transitions. Word has length 246 [2020-11-28 07:41:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:35,814 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1583 transitions. [2020-11-28 07:41:35,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1583 transitions. [2020-11-28 07:41:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-11-28 07:41:35,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:35,821 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:36,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-28 07:41:36,035 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1666825872, now seen corresponding path program 1 times [2020-11-28 07:41:36,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:36,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751917038] [2020-11-28 07:41:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 334 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-28 07:41:36,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751917038] [2020-11-28 07:41:36,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043605323] [2020-11-28 07:41:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:36,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:36,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-11-28 07:41:36,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-11-28 07:41:36,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:36,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:41:36,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208760332] [2020-11-28 07:41:36,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:36,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:36,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:36,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:41:36,878 INFO L87 Difference]: Start difference. First operand 1281 states and 1583 transitions. Second operand 3 states. [2020-11-28 07:41:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:37,282 INFO L93 Difference]: Finished difference Result 2772 states and 3402 transitions. [2020-11-28 07:41:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:37,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2020-11-28 07:41:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:37,284 INFO L225 Difference]: With dead ends: 2772 [2020-11-28 07:41:37,284 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:37,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:41:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:37,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2020-11-28 07:41:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:37,290 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:37,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:37,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:37,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 07:41:37,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:41:37,735 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-28 07:41:37,908 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:41:37,913 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:41:37,914 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:41:37,915 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse2 (<= 14 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse1 (= ~a20~0 1)) (.cse5 (not (= ~a7~0 1))) (.cse3 (<= ~a16~0 5)) (.cse6 (= ~a17~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse1 .cse5 .cse6) (and .cse0 (<= 15 ~a8~0)) (and (<= ~a16~0 4) .cse1) (and .cse2 .cse4 .cse1) (and .cse3 .cse5) (and .cse3 .cse6))) [2020-11-28 07:41:37,915 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:41:37,916 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L525(line 525) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse2 (<= 14 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse1 (= ~a20~0 1)) (.cse5 (not (= ~a7~0 1))) (.cse3 (<= ~a16~0 5)) (.cse6 (= ~a17~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse1 .cse5 .cse6) (and .cse0 (<= 15 ~a8~0)) (and (<= ~a16~0 4) .cse1) (and .cse2 .cse4 .cse1) (and .cse3 .cse5) (and .cse3 .cse6))) [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:41:37,917 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:41:37,918 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:41:37,918 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:41:37,918 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:41:37,918 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:41:37,918 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:41:37,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:37 BoogieIcfgContainer [2020-11-28 07:41:37,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:37,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:37,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:37,956 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:37,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:27" (3/4) ... [2020-11-28 07:41:37,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:37,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:41:37,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-28 07:41:37,988 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:41:37,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:41:38,147 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cb2f8fc4-89d2-4601-8003-d47230060c37/bin/utaipan/witness.graphml [2020-11-28 07:41:38,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:38,148 INFO L168 Benchmark]: Toolchain (without parser) took 14053.61 ms. Allocated memory was 92.3 MB in the beginning and 360.7 MB in the end (delta: 268.4 MB). Free memory was 58.9 MB in the beginning and 190.5 MB in the end (delta: -131.6 MB). Peak memory consumption was 136.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:38,148 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:38,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.32 ms. Allocated memory is still 92.3 MB. Free memory was 58.7 MB in the beginning and 52.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:38,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.94 ms. Allocated memory is still 92.3 MB. Free memory was 52.0 MB in the beginning and 46.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:38,149 INFO L168 Benchmark]: Boogie Preprocessor took 61.75 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 41.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:38,150 INFO L168 Benchmark]: RCFGBuilder took 2478.23 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 41.8 MB in the beginning and 95.7 MB in the end (delta: -53.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:38,150 INFO L168 Benchmark]: TraceAbstraction took 10550.09 ms. Allocated memory was 134.2 MB in the beginning and 360.7 MB in the end (delta: 226.5 MB). Free memory was 95.7 MB in the beginning and 206.2 MB in the end (delta: -110.5 MB). Peak memory consumption was 117.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:38,151 INFO L168 Benchmark]: Witness Printer took 191.50 ms. Allocated memory is still 360.7 MB. Free memory was 206.2 MB in the beginning and 190.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:38,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.32 ms. Allocated memory is still 92.3 MB. Free memory was 58.7 MB in the beginning and 52.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.94 ms. Allocated memory is still 92.3 MB. Free memory was 52.0 MB in the beginning and 46.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.75 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 41.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2478.23 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 41.8 MB in the beginning and 95.7 MB in the end (delta: -53.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10550.09 ms. Allocated memory was 134.2 MB in the beginning and 360.7 MB in the end (delta: 226.5 MB). Free memory was 95.7 MB in the beginning and 206.2 MB in the end (delta: -110.5 MB). Peak memory consumption was 117.0 MB. Max. memory is 16.1 GB. * Witness Printer took 191.50 ms. Allocated memory is still 360.7 MB. Free memory was 206.2 MB in the beginning and 190.5 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 && a20 == 1) || (14 <= a8 && a16 <= 5)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || (a16 <= 4 && a20 == 1)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 == 6 && a20 == 1) || (14 <= a8 && a16 <= 5)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || (a16 <= 4 && a20 == 1)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 434 SDtfs, 866 SDslu, 57 SDs, 0 SdLazy, 2732 SolverSat, 703 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1091 GetRequests, 1066 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 137 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2042 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 2373 NumberOfCodeBlocks, 2373 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2886 ConstructedInterpolants, 0 QuantifiedInterpolants, 1902207 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1105 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 3524/3712 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...