./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label55.c -s /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/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 eb1378ae256d4f0b4a7126643513eaf232a83d7c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:44:04,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:44:04,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:44:04,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:44:04,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:44:04,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:44:04,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:44:04,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:44:04,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:44:04,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:44:04,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:44:04,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:44:04,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:44:04,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:44:04,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:44:04,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:44:04,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:44:04,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:44:04,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:44:04,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:44:04,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:44:04,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:44:04,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:44:04,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:44:04,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:44:04,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:44:04,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:44:04,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:44:04,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:44:04,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:44:04,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:44:04,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:44:04,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:44:04,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:44:04,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:44:04,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:44:04,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:44:04,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:44:04,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:44:04,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:44:04,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:44:04,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 15:44:04,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:44:04,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:44:04,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:44:04,932 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:44:04,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:44:04,932 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:44:04,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:44:04,932 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:44:04,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:44:04,933 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:44:04,933 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:44:04,933 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:44:04,933 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:44:04,933 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:44:04,933 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:44:04,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:44:04,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:44:04,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:44:04,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:44:04,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:44:04,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:44:04,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:44:04,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:44:04,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:44:04,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:44:04,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:44:04,936 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:44:04,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:44:04,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:44:04,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:44:04,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:44:04,936 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_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb1378ae256d4f0b4a7126643513eaf232a83d7c [2020-12-09 15:44:05,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:44:05,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:44:05,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:44:05,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:44:05,146 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:44:05,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label55.c [2020-12-09 15:44:05,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/data/f192b8131/0d4c63f306df4a84a71ad66168a0c89d/FLAGfd28dde34 [2020-12-09 15:44:05,622 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:44:05,623 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/sv-benchmarks/c/eca-rers2012/Problem02_label55.c [2020-12-09 15:44:05,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/data/f192b8131/0d4c63f306df4a84a71ad66168a0c89d/FLAGfd28dde34 [2020-12-09 15:44:05,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/data/f192b8131/0d4c63f306df4a84a71ad66168a0c89d [2020-12-09 15:44:05,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:44:05,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:44:05,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:44:05,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:44:05,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:44:05,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:05,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d27c34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05, skipping insertion in model container [2020-12-09 15:44:05,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:05,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:44:05,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:44:05,877 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/sv-benchmarks/c/eca-rers2012/Problem02_label55.c[17358,17371] [2020-12-09 15:44:05,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:44:05,903 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:44:05,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/sv-benchmarks/c/eca-rers2012/Problem02_label55.c[17358,17371] [2020-12-09 15:44:05,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:44:05,986 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:44:05,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05 WrapperNode [2020-12-09 15:44:05,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:44:05,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:44:05,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:44:05,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:44:05,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:44:06,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:44:06,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:44:06,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:44:06,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... [2020-12-09 15:44:06,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:44:06,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:44:06,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:44:06,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:44:06,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/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 [2020-12-09 15:44:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 15:44:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:44:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:44:06,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:44:07,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:44:07,351 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 15:44:07,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:44:07 BoogieIcfgContainer [2020-12-09 15:44:07,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:44:07,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:44:07,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:44:07,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:44:07,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:44:05" (1/3) ... [2020-12-09 15:44:07,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708f9672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:44:07, skipping insertion in model container [2020-12-09 15:44:07,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:44:05" (2/3) ... [2020-12-09 15:44:07,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708f9672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:44:07, skipping insertion in model container [2020-12-09 15:44:07,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:44:07" (3/3) ... [2020-12-09 15:44:07,358 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-12-09 15:44:07,368 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:44:07,371 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 15:44:07,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 15:44:07,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:44:07,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:44:07,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:44:07,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:44:07,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:44:07,396 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:44:07,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:44:07,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:44:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 15:44:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 15:44:07,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:07,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:07,413 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash 925946887, now seen corresponding path program 1 times [2020-12-09 15:44:07,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:07,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486559530] [2020-12-09 15:44:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:44:07,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486559530] [2020-12-09 15:44:07,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:07,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:44:07,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323935944] [2020-12-09 15:44:07,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:07,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:07,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:44:07,677 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 15:44:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:07,992 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 15:44:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:07,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 15:44:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:08,002 INFO L225 Difference]: With dead ends: 251 [2020-12-09 15:44:08,002 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 15:44:08,004 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 [2020-12-09 15:44:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 15:44:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 15:44:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 15:44:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-12-09 15:44:08,044 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-12-09 15:44:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:08,045 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-12-09 15:44:08,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-12-09 15:44:08,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 15:44:08,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:08,048 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:08,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 15:44:08,048 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:08,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:08,049 INFO L82 PathProgramCache]: Analyzing trace with hash 221747366, now seen corresponding path program 1 times [2020-12-09 15:44:08,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:08,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905303579] [2020-12-09 15:44:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:44:08,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905303579] [2020-12-09 15:44:08,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:08,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:44:08,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635795685] [2020-12-09 15:44:08,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:08,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:08,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:08,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:44:08,110 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-12-09 15:44:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:08,376 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-12-09 15:44:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:08,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 15:44:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:08,379 INFO L225 Difference]: With dead ends: 485 [2020-12-09 15:44:08,379 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 15:44:08,380 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 [2020-12-09 15:44:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 15:44:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 15:44:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 15:44:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2020-12-09 15:44:08,395 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 98 [2020-12-09 15:44:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:08,396 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2020-12-09 15:44:08,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2020-12-09 15:44:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 15:44:08,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:08,398 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:08,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 15:44:08,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:08,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:08,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1583675958, now seen corresponding path program 1 times [2020-12-09 15:44:08,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:08,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484551875] [2020-12-09 15:44:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:44:08,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484551875] [2020-12-09 15:44:08,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:08,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:44:08,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664845256] [2020-12-09 15:44:08,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:08,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:44:08,454 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand 3 states. [2020-12-09 15:44:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:08,586 INFO L93 Difference]: Finished difference Result 645 states and 945 transitions. [2020-12-09 15:44:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:08,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 15:44:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:08,588 INFO L225 Difference]: With dead ends: 645 [2020-12-09 15:44:08,588 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 15:44:08,589 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 [2020-12-09 15:44:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 15:44:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 15:44:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 15:44:08,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 433 transitions. [2020-12-09 15:44:08,603 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 433 transitions. Word has length 99 [2020-12-09 15:44:08,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:08,603 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 433 transitions. [2020-12-09 15:44:08,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:08,603 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 433 transitions. [2020-12-09 15:44:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 15:44:08,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:08,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:08,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 15:44:08,605 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:08,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2134435777, now seen corresponding path program 1 times [2020-12-09 15:44:08,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:08,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983249371] [2020-12-09 15:44:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:44:08,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983249371] [2020-12-09 15:44:08,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:08,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:44:08,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38423900] [2020-12-09 15:44:08,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:08,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:08,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:08,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:44:08,670 INFO L87 Difference]: Start difference. First operand 323 states and 433 transitions. Second operand 3 states. [2020-12-09 15:44:08,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:08,893 INFO L93 Difference]: Finished difference Result 725 states and 980 transitions. [2020-12-09 15:44:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:08,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 15:44:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:08,895 INFO L225 Difference]: With dead ends: 725 [2020-12-09 15:44:08,895 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 15:44:08,896 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 [2020-12-09 15:44:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 15:44:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 15:44:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 15:44:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2020-12-09 15:44:08,906 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 103 [2020-12-09 15:44:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:08,906 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2020-12-09 15:44:08,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2020-12-09 15:44:08,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 15:44:08,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:08,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:08,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 15:44:08,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:08,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2118178295, now seen corresponding path program 1 times [2020-12-09 15:44:08,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:08,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801969489] [2020-12-09 15:44:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:44:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801969489] [2020-12-09 15:44:09,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611069041] [2020-12-09 15:44:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/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 [2020-12-09 15:44:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:09,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:44:09,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:44:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 15:44:09,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:44:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 15:44:09,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 15:44:09,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 15:44:09,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665174606] [2020-12-09 15:44:09,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:09,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:09,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:09,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:09,305 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand 3 states. [2020-12-09 15:44:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:09,519 INFO L93 Difference]: Finished difference Result 1125 states and 1466 transitions. [2020-12-09 15:44:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:09,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 15:44:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:09,523 INFO L225 Difference]: With dead ends: 1125 [2020-12-09 15:44:09,523 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 15:44:09,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 15:44:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 15:44:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 15:44:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 923 transitions. [2020-12-09 15:44:09,543 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 923 transitions. Word has length 107 [2020-12-09 15:44:09,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:09,543 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 923 transitions. [2020-12-09 15:44:09,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 923 transitions. [2020-12-09 15:44:09,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-09 15:44:09,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:09,546 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:09,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:09,748 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1094933143, now seen corresponding path program 1 times [2020-12-09 15:44:09,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:09,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466727036] [2020-12-09 15:44:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 15:44:09,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466727036] [2020-12-09 15:44:09,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017015975] [2020-12-09 15:44:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/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 [2020-12-09 15:44:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:09,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:44:09,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:44:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 15:44:10,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:44:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 15:44:10,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 15:44:10,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 15:44:10,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893437253] [2020-12-09 15:44:10,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:10,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:10,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:10,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:44:10,092 INFO L87 Difference]: Start difference. First operand 723 states and 923 transitions. Second operand 3 states. [2020-12-09 15:44:10,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:10,339 INFO L93 Difference]: Finished difference Result 1525 states and 1985 transitions. [2020-12-09 15:44:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:10,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-09 15:44:10,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:10,345 INFO L225 Difference]: With dead ends: 1525 [2020-12-09 15:44:10,345 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 15:44:10,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:44:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 15:44:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 643. [2020-12-09 15:44:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 15:44:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 828 transitions. [2020-12-09 15:44:10,374 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 828 transitions. Word has length 121 [2020-12-09 15:44:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:10,374 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 828 transitions. [2020-12-09 15:44:10,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 828 transitions. [2020-12-09 15:44:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-09 15:44:10,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:10,377 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:10,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:10,578 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1534356932, now seen corresponding path program 1 times [2020-12-09 15:44:10,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:10,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679066108] [2020-12-09 15:44:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 15:44:10,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679066108] [2020-12-09 15:44:10,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:10,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:44:10,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213227575] [2020-12-09 15:44:10,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:10,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:10,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:10,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:44:10,640 INFO L87 Difference]: Start difference. First operand 643 states and 828 transitions. Second operand 3 states. [2020-12-09 15:44:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:10,882 INFO L93 Difference]: Finished difference Result 1525 states and 1976 transitions. [2020-12-09 15:44:10,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:10,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-09 15:44:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:10,887 INFO L225 Difference]: With dead ends: 1525 [2020-12-09 15:44:10,887 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 15:44:10,889 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 [2020-12-09 15:44:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 15:44:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 15:44:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 15:44:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 928 transitions. [2020-12-09 15:44:10,909 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 928 transitions. Word has length 133 [2020-12-09 15:44:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:10,909 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 928 transitions. [2020-12-09 15:44:10,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 928 transitions. [2020-12-09 15:44:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 15:44:10,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:10,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:10,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 15:44:10,913 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:10,913 INFO L82 PathProgramCache]: Analyzing trace with hash 867759995, now seen corresponding path program 1 times [2020-12-09 15:44:10,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:10,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56964074] [2020-12-09 15:44:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 15:44:10,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56964074] [2020-12-09 15:44:10,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166598058] [2020-12-09 15:44:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:11,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:44:11,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:44:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 15:44:11,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:44:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 15:44:11,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 15:44:11,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 15:44:11,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782729556] [2020-12-09 15:44:11,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:11,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:11,258 INFO L87 Difference]: Start difference. First operand 803 states and 928 transitions. Second operand 3 states. [2020-12-09 15:44:11,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:11,478 INFO L93 Difference]: Finished difference Result 1685 states and 1939 transitions. [2020-12-09 15:44:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:11,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-09 15:44:11,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:11,481 INFO L225 Difference]: With dead ends: 1685 [2020-12-09 15:44:11,481 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 15:44:11,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 15:44:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 15:44:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 15:44:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 725 transitions. [2020-12-09 15:44:11,506 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 725 transitions. Word has length 154 [2020-12-09 15:44:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:11,506 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 725 transitions. [2020-12-09 15:44:11,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 725 transitions. [2020-12-09 15:44:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-09 15:44:11,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:11,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:11,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:11,710 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:11,711 INFO L82 PathProgramCache]: Analyzing trace with hash 201168417, now seen corresponding path program 1 times [2020-12-09 15:44:11,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:11,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703890197] [2020-12-09 15:44:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 15:44:11,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703890197] [2020-12-09 15:44:11,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053191338] [2020-12-09 15:44:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:11,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:44:11,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:44:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-12-09 15:44:12,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:44:12,096 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-12-09 15:44:12,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 15:44:12,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 15:44:12,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628183708] [2020-12-09 15:44:12,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:12,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:12,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:12,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:44:12,097 INFO L87 Difference]: Start difference. First operand 643 states and 725 transitions. Second operand 3 states. [2020-12-09 15:44:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:12,263 INFO L93 Difference]: Finished difference Result 1285 states and 1449 transitions. [2020-12-09 15:44:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:12,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-09 15:44:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:12,269 INFO L225 Difference]: With dead ends: 1285 [2020-12-09 15:44:12,269 INFO L226 Difference]: Without dead ends: 1283 [2020-12-09 15:44:12,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:44:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2020-12-09 15:44:12,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2020-12-09 15:44:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-12-09 15:44:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1447 transitions. [2020-12-09 15:44:12,301 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1447 transitions. Word has length 165 [2020-12-09 15:44:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:12,302 INFO L481 AbstractCegarLoop]: Abstraction has 1283 states and 1447 transitions. [2020-12-09 15:44:12,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1447 transitions. [2020-12-09 15:44:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-09 15:44:12,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:12,306 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:12,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:12,508 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash -809748624, now seen corresponding path program 1 times [2020-12-09 15:44:12,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:12,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759346922] [2020-12-09 15:44:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-09 15:44:12,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759346922] [2020-12-09 15:44:12,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436307275] [2020-12-09 15:44:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:12,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:44:12,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:44:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 15:44:12,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:44:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 15:44:12,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 15:44:12,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 15:44:12,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642474973] [2020-12-09 15:44:12,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:12,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:12,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:12,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:12,888 INFO L87 Difference]: Start difference. First operand 1283 states and 1447 transitions. Second operand 3 states. [2020-12-09 15:44:13,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:13,082 INFO L93 Difference]: Finished difference Result 2805 states and 3177 transitions. [2020-12-09 15:44:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:13,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-12-09 15:44:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:13,088 INFO L225 Difference]: With dead ends: 2805 [2020-12-09 15:44:13,088 INFO L226 Difference]: Without dead ends: 1523 [2020-12-09 15:44:13,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-12-09 15:44:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2020-12-09 15:44:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-12-09 15:44:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1687 transitions. [2020-12-09 15:44:13,113 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1687 transitions. Word has length 198 [2020-12-09 15:44:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:13,113 INFO L481 AbstractCegarLoop]: Abstraction has 1523 states and 1687 transitions. [2020-12-09 15:44:13,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1687 transitions. [2020-12-09 15:44:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-12-09 15:44:13,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:13,117 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2020-12-09 15:44:13,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 15:44:13,318 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:13,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash -132741960, now seen corresponding path program 1 times [2020-12-09 15:44:13,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:13,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208688235] [2020-12-09 15:44:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 128 proven. 8 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-12-09 15:44:13,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208688235] [2020-12-09 15:44:13,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130806314] [2020-12-09 15:44:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:13,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:44:13,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:44:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-12-09 15:44:13,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:44:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-12-09 15:44:13,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 15:44:13,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 15:44:13,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589602479] [2020-12-09 15:44:13,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:13,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:13,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:13,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:13,749 INFO L87 Difference]: Start difference. First operand 1523 states and 1687 transitions. Second operand 3 states. [2020-12-09 15:44:13,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:13,921 INFO L93 Difference]: Finished difference Result 3365 states and 3718 transitions. [2020-12-09 15:44:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:13,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2020-12-09 15:44:13,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:13,926 INFO L225 Difference]: With dead ends: 3365 [2020-12-09 15:44:13,927 INFO L226 Difference]: Without dead ends: 1523 [2020-12-09 15:44:13,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:44:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-12-09 15:44:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1123. [2020-12-09 15:44:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 15:44:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1205 transitions. [2020-12-09 15:44:13,944 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1205 transitions. Word has length 226 [2020-12-09 15:44:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:13,944 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1205 transitions. [2020-12-09 15:44:13,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1205 transitions. [2020-12-09 15:44:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-12-09 15:44:13,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:13,947 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:14,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:44:14,148 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:14,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:14,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1377224096, now seen corresponding path program 1 times [2020-12-09 15:44:14,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:14,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336006710] [2020-12-09 15:44:14,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-09 15:44:14,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336006710] [2020-12-09 15:44:14,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:14,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:44:14,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142790936] [2020-12-09 15:44:14,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:44:14,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:14,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:44:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:44:14,385 INFO L87 Difference]: Start difference. First operand 1123 states and 1205 transitions. Second operand 4 states. [2020-12-09 15:44:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:14,602 INFO L93 Difference]: Finished difference Result 2005 states and 2155 transitions. [2020-12-09 15:44:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:44:14,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2020-12-09 15:44:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:14,606 INFO L225 Difference]: With dead ends: 2005 [2020-12-09 15:44:14,606 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 15:44:14,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:44:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 15:44:14,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-12-09 15:44:14,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 15:44:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1199 transitions. [2020-12-09 15:44:14,620 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1199 transitions. Word has length 308 [2020-12-09 15:44:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:14,620 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1199 transitions. [2020-12-09 15:44:14,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:44:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1199 transitions. [2020-12-09 15:44:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-12-09 15:44:14,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:14,623 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:14,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 15:44:14,623 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash 744690565, now seen corresponding path program 1 times [2020-12-09 15:44:14,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:14,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963387648] [2020-12-09 15:44:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-12-09 15:44:14,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963387648] [2020-12-09 15:44:14,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:14,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:44:14,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396902264] [2020-12-09 15:44:14,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:14,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:14,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:14,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:44:14,757 INFO L87 Difference]: Start difference. First operand 1123 states and 1199 transitions. Second operand 3 states. [2020-12-09 15:44:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:14,919 INFO L93 Difference]: Finished difference Result 2165 states and 2313 transitions. [2020-12-09 15:44:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:14,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 358 [2020-12-09 15:44:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:14,922 INFO L225 Difference]: With dead ends: 2165 [2020-12-09 15:44:14,922 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 15:44:14,923 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 [2020-12-09 15:44:14,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 15:44:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 15:44:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 15:44:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 847 transitions. [2020-12-09 15:44:14,934 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 847 transitions. Word has length 358 [2020-12-09 15:44:14,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:14,934 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 847 transitions. [2020-12-09 15:44:14,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 847 transitions. [2020-12-09 15:44:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-12-09 15:44:14,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:44:14,937 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:44:14,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 15:44:14,937 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:44:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:44:14,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1569403783, now seen corresponding path program 1 times [2020-12-09 15:44:14,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:44:14,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991819881] [2020-12-09 15:44:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:44:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:44:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-12-09 15:44:15,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991819881] [2020-12-09 15:44:15,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:44:15,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:44:15,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962445691] [2020-12-09 15:44:15,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:44:15,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:44:15,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:44:15,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:44:15,098 INFO L87 Difference]: Start difference. First operand 803 states and 847 transitions. Second operand 3 states. [2020-12-09 15:44:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:44:15,227 INFO L93 Difference]: Finished difference Result 1363 states and 1444 transitions. [2020-12-09 15:44:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:44:15,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2020-12-09 15:44:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:44:15,228 INFO L225 Difference]: With dead ends: 1363 [2020-12-09 15:44:15,228 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:44:15,228 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 [2020-12-09 15:44:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:44:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:44:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:44:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:44:15,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2020-12-09 15:44:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:44:15,229 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:44:15,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:44:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:44:15,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:44:15,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 15:44:15,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 15:44:15,414 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-09 15:44:15,537 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 15:44:15,539 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 15:44:15,540 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 497) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 15:44:15,541 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= ~a11~0 0)) (.cse7 (<= ~a19~0 0)) (.cse5 (<= ~a28~0 7)) (.cse8 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse0 (<= 9 ~a28~0)) (.cse9 (<= ~a17~0 7)) (.cse1 (= ~a19~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse4 .cse2) (and .cse6 .cse7 .cse8 .cse4 .cse2 .cse3) (and .cse6 .cse1 .cse5 .cse2) (and .cse1 .cse5 .cse9) (and .cse7 .cse5 .cse2) (and (= ~a11~0 1) .cse5 .cse2) (and .cse1 .cse8 .cse4 .cse2) (and .cse0 .cse9 .cse3) (and (not .cse1) .cse2 (<= ~a25~0 0) .cse3))) [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= ~a11~0 0)) (.cse7 (<= ~a19~0 0)) (.cse5 (<= ~a28~0 7)) (.cse8 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse0 (<= 9 ~a28~0)) (.cse9 (<= ~a17~0 7)) (.cse1 (= ~a19~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse4 .cse2) (and .cse6 .cse7 .cse8 .cse4 .cse2 .cse3) (and .cse6 .cse1 .cse5 .cse2) (and .cse1 .cse5 .cse9) (and .cse7 .cse5 .cse2) (and (= ~a11~0 1) .cse5 .cse2) (and .cse1 .cse8 .cse4 .cse2) (and .cse0 .cse9 .cse3) (and (not .cse1) .cse2 (<= ~a25~0 0) .cse3))) [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 15:44:15,542 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L493-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 15:44:15,543 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 15:44:15,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:44:15 BoogieIcfgContainer [2020-12-09 15:44:15,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:44:15,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:44:15,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:44:15,560 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:44:15,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:44:07" (3/4) ... [2020-12-09 15:44:15,562 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:44:15,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 15:44:15,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 15:44:15,580 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 15:44:15,581 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 15:44:15,665 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_44e9ecd3-5442-4884-b5b8-aa77ba1ec388/bin/utaipan/witness.graphml [2020-12-09 15:44:15,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:44:15,666 INFO L168 Benchmark]: Toolchain (without parser) took 10021.48 ms. Allocated memory was 86.0 MB in the beginning and 356.5 MB in the end (delta: 270.5 MB). Free memory was 63.5 MB in the beginning and 158.6 MB in the end (delta: -95.1 MB). Peak memory consumption was 175.4 MB. Max. memory is 16.1 GB. [2020-12-09 15:44:15,666 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:44:15,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.58 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 61.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:44:15,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.22 ms. Allocated memory is still 86.0 MB. Free memory was 61.5 MB in the beginning and 56.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 15:44:15,667 INFO L168 Benchmark]: Boogie Preprocessor took 42.58 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 51.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 15:44:15,667 INFO L168 Benchmark]: RCFGBuilder took 1264.55 ms. Allocated memory was 86.0 MB in the beginning and 138.4 MB in the end (delta: 52.4 MB). Free memory was 51.8 MB in the beginning and 80.9 MB in the end (delta: -29.1 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. [2020-12-09 15:44:15,668 INFO L168 Benchmark]: TraceAbstraction took 8205.35 ms. Allocated memory was 138.4 MB in the beginning and 356.5 MB in the end (delta: 218.1 MB). Free memory was 80.9 MB in the beginning and 174.3 MB in the end (delta: -93.4 MB). Peak memory consumption was 125.7 MB. Max. memory is 16.1 GB. [2020-12-09 15:44:15,668 INFO L168 Benchmark]: Witness Printer took 105.94 ms. Allocated memory is still 356.5 MB. Free memory was 174.3 MB in the beginning and 158.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 15:44:15,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.58 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 61.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.22 ms. Allocated memory is still 86.0 MB. Free memory was 61.5 MB in the beginning and 56.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.58 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 51.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1264.55 ms. Allocated memory was 86.0 MB in the beginning and 138.4 MB in the end (delta: 52.4 MB). Free memory was 51.8 MB in the beginning and 80.9 MB in the end (delta: -29.1 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8205.35 ms. Allocated memory was 138.4 MB in the beginning and 356.5 MB in the end (delta: 218.1 MB). Free memory was 80.9 MB in the beginning and 174.3 MB in the end (delta: -93.4 MB). Peak memory consumption was 125.7 MB. Max. memory is 16.1 GB. * Witness Printer took 105.94 ms. Allocated memory is still 356.5 MB. Free memory was 174.3 MB in the beginning and 158.6 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: 497]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((9 <= a28 && a19 == 1) && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a11 <= 0 && a19 == 1) && a25 == 1) && a17 <= 8)) || (((((a11 <= 0 && a19 <= 0) && 10 <= a28) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a11 <= 0 && a19 == 1) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((a19 <= 0 && a28 <= 7) && a17 <= 8)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 10 <= a28) && a25 == 1) && a17 <= 8)) || ((9 <= a28 && a17 <= 7) && a28 <= 10)) || (((!(a19 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((9 <= a28 && a19 == 1) && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a11 <= 0 && a19 == 1) && a25 == 1) && a17 <= 8)) || (((((a11 <= 0 && a19 <= 0) && 10 <= a28) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a11 <= 0 && a19 == 1) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((a19 <= 0 && a28 <= 7) && a17 <= 8)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 10 <= a28) && a25 == 1) && a17 <= 8)) || ((9 <= a28 && a17 <= 7) && a28 <= 10)) || (((!(a19 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 14, TraceHistogramMax: 8, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1066 SDtfs, 735 SDslu, 79 SDs, 0 SdLazy, 2910 SolverSat, 494 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1974 GetRequests, 1938 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1523occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 640 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 273 HoareAnnotationTreeSize, 3 FomulaSimplifications, 984 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 306 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 3484 NumberOfCodeBlocks, 3484 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 4429 ConstructedInterpolants, 0 QuantifiedInterpolants, 1915047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2162 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 26 InterpolantComputations, 20 PerfectInterpolantSequences, 5076/5202 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...