./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/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 c3404c1fa142754bfca0a1613808298f0a5a3901 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:09:13,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:09:13,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:09:13,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:09:13,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:09:13,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:09:13,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:09:14,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:09:14,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:09:14,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:09:14,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:09:14,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:09:14,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:09:14,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:09:14,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:09:14,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:09:14,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:09:14,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:09:14,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:09:14,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:09:14,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:09:14,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:09:14,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:09:14,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:09:14,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:09:14,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:09:14,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:09:14,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:09:14,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:09:14,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:09:14,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:09:14,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:09:14,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:09:14,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:09:14,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:09:14,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:09:14,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:09:14,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:09:14,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:09:14,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:09:14,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:09:14,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:09:14,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:09:14,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:09:14,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:09:14,101 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:09:14,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:09:14,101 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:09:14,102 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:09:14,102 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:09:14,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:09:14,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:09:14,103 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:09:14,104 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:09:14,104 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:09:14,104 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:09:14,104 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:09:14,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:09:14,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:09:14,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:09:14,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:09:14,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:09:14,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:09:14,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:09:14,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:09:14,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:09:14,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:09:14,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:09:14,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:09:14,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:09:14,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:09:14,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:09:14,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:09:14,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:09:14,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:09:14,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:09:14,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:09:14,112 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:09:14,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:09:14,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:09:14,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:09:14,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:09:14,113 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_97606229-3fe7-498c-b9c5-1514e1303119/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3404c1fa142754bfca0a1613808298f0a5a3901 [2020-11-22 13:09:14,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:09:14,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:09:14,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:09:14,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:09:14,384 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:09:14,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2020-11-22 13:09:14,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/data/c05b4f742/f3f6ee61ec9b4e4ea9fecc8a127ab6af/FLAG25d8f9fc4 [2020-11-22 13:09:15,021 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:09:15,022 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2020-11-22 13:09:15,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/data/c05b4f742/f3f6ee61ec9b4e4ea9fecc8a127ab6af/FLAG25d8f9fc4 [2020-11-22 13:09:15,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/data/c05b4f742/f3f6ee61ec9b4e4ea9fecc8a127ab6af [2020-11-22 13:09:15,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:09:15,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:09:15,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:15,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:09:15,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:09:15,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:15,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285772cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15, skipping insertion in model container [2020-11-22 13:09:15,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:15,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:09:15,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:09:15,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:15,753 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:09:15,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:15,881 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:09:15,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15 WrapperNode [2020-11-22 13:09:15,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:15,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:15,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:09:15,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:09:15,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:15,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:15,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:15,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:09:15,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:09:15,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:09:15,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:15,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:15,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:15,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:16,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:16,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:16,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... [2020-11-22 13:09:16,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:09:16,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:09:16,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:09:16,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:09:16,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:09:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:09:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:09:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:09:16,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:09:18,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:09:18,557 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:09:18,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:18 BoogieIcfgContainer [2020-11-22 13:09:18,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:09:18,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:09:18,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:09:18,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:09:18,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:09:15" (1/3) ... [2020-11-22 13:09:18,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32222540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:18, skipping insertion in model container [2020-11-22 13:09:18,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:15" (2/3) ... [2020-11-22 13:09:18,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32222540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:18, skipping insertion in model container [2020-11-22 13:09:18,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:18" (3/3) ... [2020-11-22 13:09:18,570 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-11-22 13:09:18,583 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:09:18,588 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:09:18,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:09:18,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:09:18,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:09:18,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:09:18,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:09:18,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:09:18,633 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:09:18,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:09:18,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:09:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 13:09:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 13:09:18,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:18,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:18,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1520708461, now seen corresponding path program 1 times [2020-11-22 13:09:18,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:18,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561779810] [2020-11-22 13:09:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:19,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561779810] [2020-11-22 13:09:19,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:19,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:19,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71780876] [2020-11-22 13:09:19,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:09:19,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:19,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:09:19,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:19,289 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-22 13:09:20,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:20,223 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-22 13:09:20,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:09:20,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-22 13:09:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:20,242 INFO L225 Difference]: With dead ends: 297 [2020-11-22 13:09:20,242 INFO L226 Difference]: Without dead ends: 216 [2020-11-22 13:09:20,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-22 13:09:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-22 13:09:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 13:09:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-22 13:09:20,319 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-22 13:09:20,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:20,321 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-22 13:09:20,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:09:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-22 13:09:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 13:09:20,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:20,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:20,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:09:20,335 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:20,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1832090308, now seen corresponding path program 1 times [2020-11-22 13:09:20,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:20,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335998580] [2020-11-22 13:09:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:20,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335998580] [2020-11-22 13:09:20,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:20,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:20,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627088920] [2020-11-22 13:09:20,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:09:20,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:20,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:09:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:20,610 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-22 13:09:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:21,479 INFO L93 Difference]: Finished difference Result 571 states and 986 transitions. [2020-11-22 13:09:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:09:21,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-22 13:09:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:21,484 INFO L225 Difference]: With dead ends: 571 [2020-11-22 13:09:21,484 INFO L226 Difference]: Without dead ends: 358 [2020-11-22 13:09:21,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-22 13:09:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2020-11-22 13:09:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 13:09:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-22 13:09:21,504 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-22 13:09:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:21,504 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-22 13:09:21,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:09:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-22 13:09:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-22 13:09:21,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:21,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:21,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:09:21,509 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:21,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1009064264, now seen corresponding path program 1 times [2020-11-22 13:09:21,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:21,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340877285] [2020-11-22 13:09:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:21,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340877285] [2020-11-22 13:09:21,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:21,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:21,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419230146] [2020-11-22 13:09:21,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:09:21,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:09:21,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:21,635 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-22 13:09:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:22,109 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-22 13:09:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:09:22,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-22 13:09:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:22,113 INFO L225 Difference]: With dead ends: 573 [2020-11-22 13:09:22,113 INFO L226 Difference]: Without dead ends: 358 [2020-11-22 13:09:22,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-22 13:09:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-22 13:09:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-22 13:09:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2020-11-22 13:09:22,153 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2020-11-22 13:09:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:22,153 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2020-11-22 13:09:22,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:09:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2020-11-22 13:09:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-22 13:09:22,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:22,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:22,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:09:22,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1460491294, now seen corresponding path program 1 times [2020-11-22 13:09:22,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:22,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241841747] [2020-11-22 13:09:22,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:09:22,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241841747] [2020-11-22 13:09:22,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:22,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:22,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426513302] [2020-11-22 13:09:22,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:09:22,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:22,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:09:22,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:09:22,279 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2020-11-22 13:09:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:22,647 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2020-11-22 13:09:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:09:22,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-11-22 13:09:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:22,651 INFO L225 Difference]: With dead ends: 999 [2020-11-22 13:09:22,651 INFO L226 Difference]: Without dead ends: 642 [2020-11-22 13:09:22,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:09:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-22 13:09:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-22 13:09:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 13:09:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2020-11-22 13:09:22,686 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 95 [2020-11-22 13:09:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:22,686 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2020-11-22 13:09:22,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:09:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2020-11-22 13:09:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-22 13:09:22,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:22,689 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:22,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:09:22,690 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:22,690 INFO L82 PathProgramCache]: Analyzing trace with hash 73603770, now seen corresponding path program 1 times [2020-11-22 13:09:22,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:22,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845626963] [2020-11-22 13:09:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-22 13:09:22,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845626963] [2020-11-22 13:09:22,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:22,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:09:22,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064616261] [2020-11-22 13:09:22,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:09:22,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:22,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:09:22,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:22,763 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2020-11-22 13:09:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:23,358 INFO L93 Difference]: Finished difference Result 1496 states and 2082 transitions. [2020-11-22 13:09:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:09:23,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-11-22 13:09:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:23,362 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 13:09:23,363 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 13:09:23,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 13:09:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 642. [2020-11-22 13:09:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-22 13:09:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2020-11-22 13:09:23,385 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2020-11-22 13:09:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:23,386 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2020-11-22 13:09:23,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:09:23,386 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2020-11-22 13:09:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-22 13:09:23,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:23,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:23,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:09:23,391 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:23,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1828602583, now seen corresponding path program 1 times [2020-11-22 13:09:23,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:23,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229446245] [2020-11-22 13:09:23,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-22 13:09:23,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229446245] [2020-11-22 13:09:23,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:23,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:23,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448747242] [2020-11-22 13:09:23,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:09:23,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:23,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:09:23,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:23,558 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2020-11-22 13:09:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:24,095 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2020-11-22 13:09:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:09:24,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-11-22 13:09:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:24,102 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 13:09:24,102 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 13:09:24,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 13:09:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-22 13:09:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 13:09:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2020-11-22 13:09:24,124 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2020-11-22 13:09:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:24,124 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2020-11-22 13:09:24,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:09:24,129 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2020-11-22 13:09:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-22 13:09:24,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:24,133 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:24,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:09:24,133 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash 566172918, now seen corresponding path program 1 times [2020-11-22 13:09:24,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:24,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318492106] [2020-11-22 13:09:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-11-22 13:09:24,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318492106] [2020-11-22 13:09:24,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:24,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:24,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235107348] [2020-11-22 13:09:24,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:09:24,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:09:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:09:24,351 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2020-11-22 13:09:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:24,728 INFO L93 Difference]: Finished difference Result 1780 states and 2292 transitions. [2020-11-22 13:09:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:09:24,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-11-22 13:09:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:24,734 INFO L225 Difference]: With dead ends: 1780 [2020-11-22 13:09:24,735 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 13:09:24,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:09:24,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 13:09:24,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2020-11-22 13:09:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 13:09:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1113 transitions. [2020-11-22 13:09:24,761 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1113 transitions. Word has length 176 [2020-11-22 13:09:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:24,761 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1113 transitions. [2020-11-22 13:09:24,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:09:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1113 transitions. [2020-11-22 13:09:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-11-22 13:09:24,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:24,765 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:24,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:09:24,765 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:24,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash 573910622, now seen corresponding path program 1 times [2020-11-22 13:09:24,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:24,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306756465] [2020-11-22 13:09:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-11-22 13:09:24,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306756465] [2020-11-22 13:09:24,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:24,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:24,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804167341] [2020-11-22 13:09:24,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:09:24,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:24,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:09:24,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:09:24,945 INFO L87 Difference]: Start difference. First operand 855 states and 1113 transitions. Second operand 3 states. [2020-11-22 13:09:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:25,327 INFO L93 Difference]: Finished difference Result 1851 states and 2378 transitions. [2020-11-22 13:09:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:09:25,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-11-22 13:09:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:25,334 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 13:09:25,334 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 13:09:25,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:09:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 13:09:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-22 13:09:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-22 13:09:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1153 transitions. [2020-11-22 13:09:25,361 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1153 transitions. Word has length 219 [2020-11-22 13:09:25,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:25,363 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1153 transitions. [2020-11-22 13:09:25,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:09:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1153 transitions. [2020-11-22 13:09:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-22 13:09:25,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:25,367 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:25,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:09:25,368 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash 575695831, now seen corresponding path program 1 times [2020-11-22 13:09:25,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:25,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15456136] [2020-11-22 13:09:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 253 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-11-22 13:09:25,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15456136] [2020-11-22 13:09:25,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105802342] [2020-11-22 13:09:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:09:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:25,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:09:25,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:09:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-22 13:09:26,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:09:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-22 13:09:26,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:09:26,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 13:09:26,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763436983] [2020-11-22 13:09:26,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:09:26,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:26,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:09:26,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:09:26,187 INFO L87 Difference]: Start difference. First operand 926 states and 1153 transitions. Second operand 3 states. [2020-11-22 13:09:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:26,622 INFO L93 Difference]: Finished difference Result 2135 states and 2648 transitions. [2020-11-22 13:09:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:09:26,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-11-22 13:09:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:26,631 INFO L225 Difference]: With dead ends: 2135 [2020-11-22 13:09:26,631 INFO L226 Difference]: Without dead ends: 1210 [2020-11-22 13:09:26,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 461 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:09:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-22 13:09:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-22 13:09:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 13:09:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1333 transitions. [2020-11-22 13:09:26,676 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1333 transitions. Word has length 232 [2020-11-22 13:09:26,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:26,677 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1333 transitions. [2020-11-22 13:09:26,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:09:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1333 transitions. [2020-11-22 13:09:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-22 13:09:26,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:26,683 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:26,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-22 13:09:26,912 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash -588458507, now seen corresponding path program 1 times [2020-11-22 13:09:26,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:26,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396893179] [2020-11-22 13:09:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 13:09:27,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396893179] [2020-11-22 13:09:27,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049788898] [2020-11-22 13:09:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:09:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:09:27,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:09:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-22 13:09:27,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:09:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-22 13:09:27,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:09:27,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-22 13:09:27,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859205590] [2020-11-22 13:09:27,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:09:27,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:27,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:09:27,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:09:27,696 INFO L87 Difference]: Start difference. First operand 1068 states and 1333 transitions. Second operand 3 states. [2020-11-22 13:09:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:28,055 INFO L93 Difference]: Finished difference Result 2133 states and 2664 transitions. [2020-11-22 13:09:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:09:28,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-11-22 13:09:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:28,059 INFO L225 Difference]: With dead ends: 2133 [2020-11-22 13:09:28,059 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:09:28,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:09:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:09:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:09:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:09:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:09:28,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-11-22 13:09:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:28,062 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:09:28,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:09:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:09:28,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:09:28,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 13:09:28,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:09:28,570 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-11-22 13:09:28,754 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-11-22 13:09:28,762 INFO L274 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-11-22 13:09:28,762 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 13:09:28,762 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 13:09:28,762 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 13:09:28,762 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 13:09:28,762 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 13:09:28,763 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 13:09:28,764 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 13:09:28,765 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 13:09:28,766 INFO L274 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 13:09:28,767 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 13:09:28,767 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 13:09:28,767 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 13:09:28,767 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 13:09:28,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:09:28 BoogieIcfgContainer [2020-11-22 13:09:28,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:09:28,790 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:09:28,790 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:09:28,791 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:09:28,791 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:18" (3/4) ... [2020-11-22 13:09:28,794 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:09:28,815 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 13:09:28,817 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:09:28,818 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:09:28,820 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:09:28,988 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_97606229-3fe7-498c-b9c5-1514e1303119/bin/utaipan/witness.graphml [2020-11-22 13:09:28,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:09:28,990 INFO L168 Benchmark]: Toolchain (without parser) took 13697.12 ms. Allocated memory was 96.5 MB in the beginning and 320.9 MB in the end (delta: 224.4 MB). Free memory was 64.3 MB in the beginning and 107.5 MB in the end (delta: -43.2 MB). Peak memory consumption was 180.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:28,990 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:09:28,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.21 ms. Allocated memory is still 96.5 MB. Free memory was 64.1 MB in the beginning and 56.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:28,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.36 ms. Allocated memory is still 96.5 MB. Free memory was 56.6 MB in the beginning and 50.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:28,993 INFO L168 Benchmark]: Boogie Preprocessor took 71.24 ms. Allocated memory is still 96.5 MB. Free memory was 50.9 MB in the beginning and 46.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:28,993 INFO L168 Benchmark]: RCFGBuilder took 2508.33 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 46.2 MB in the beginning and 72.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:28,994 INFO L168 Benchmark]: TraceAbstraction took 10228.18 ms. Allocated memory was 117.4 MB in the beginning and 320.9 MB in the end (delta: 203.4 MB). Free memory was 71.8 MB in the beginning and 123.2 MB in the end (delta: -51.5 MB). Peak memory consumption was 152.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:28,994 INFO L168 Benchmark]: Witness Printer took 198.43 ms. Allocated memory is still 320.9 MB. Free memory was 123.2 MB in the beginning and 107.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:28,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 588.21 ms. Allocated memory is still 96.5 MB. Free memory was 64.1 MB in the beginning and 56.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.36 ms. Allocated memory is still 96.5 MB. Free memory was 56.6 MB in the beginning and 50.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.24 ms. Allocated memory is still 96.5 MB. Free memory was 50.9 MB in the beginning and 46.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2508.33 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 46.2 MB in the beginning and 72.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10228.18 ms. Allocated memory was 117.4 MB in the beginning and 320.9 MB in the end (delta: 203.4 MB). Free memory was 71.8 MB in the beginning and 123.2 MB in the end (delta: -51.5 MB). Peak memory consumption was 152.8 MB. Max. memory is 16.1 GB. * Witness Printer took 198.43 ms. Allocated memory is still 320.9 MB. Free memory was 123.2 MB in the beginning and 107.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 464 SDtfs, 1007 SDslu, 56 SDs, 0 SdLazy, 2505 SolverSat, 717 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 979 GetRequests, 954 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, 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, 10 MinimizatonAttempts, 923 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 177 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4908 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 328 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1925 NumberOfCodeBlocks, 1925 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2384 ConstructedInterpolants, 0 QuantifiedInterpolants, 1543606 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1086 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 3158/3335 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...