./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_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/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 [2020-11-30 02:24:30,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:24:30,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:24:30,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:24:30,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:24:30,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:24:30,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:24:30,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:24:30,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:24:30,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:24:30,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:24:30,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:24:30,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:24:30,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:24:30,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:24:30,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:24:30,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:24:30,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:24:30,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:24:30,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:24:30,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:24:30,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:24:30,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:24:30,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:24:30,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:24:30,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:24:30,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:24:30,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:24:30,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:24:30,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:24:30,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:24:30,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:24:30,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:24:30,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:24:30,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:24:30,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:24:30,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:24:30,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:24:30,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:24:30,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:24:30,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:24:30,339 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:24:30,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:24:30,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:24:30,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:24:30,391 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:24:30,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:24:30,392 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:24:30,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:24:30,392 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:24:30,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:24:30,393 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:24:30,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:24:30,394 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:24:30,394 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:24:30,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:24:30,395 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:24:30,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:24:30,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:24:30,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:24:30,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:24:30,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:24:30,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:24:30,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:24:30,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:24:30,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:24:30,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:24:30,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:24:30,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:24:30,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:24:30,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:24:30,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:24:30,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:24:30,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:24:30,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:24:30,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:24:30,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:24:30,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:24:30,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:24:30,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:24:30,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:24:30,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:24:30,404 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_2f9bff1d-5f33-418f-877d-b077b7ae844c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3404c1fa142754bfca0a1613808298f0a5a3901 [2020-11-30 02:24:30,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:24:30,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:24:30,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:24:30,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:24:30,768 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:24:30,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2020-11-30 02:24:30,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/data/a284b2a69/4a68b51dd70c4ff9a017bc380b16ebab/FLAG720af9ca2 [2020-11-30 02:24:31,672 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:24:31,674 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2020-11-30 02:24:31,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/data/a284b2a69/4a68b51dd70c4ff9a017bc380b16ebab/FLAG720af9ca2 [2020-11-30 02:24:31,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/data/a284b2a69/4a68b51dd70c4ff9a017bc380b16ebab [2020-11-30 02:24:31,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:24:31,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:24:31,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:24:31,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:24:31,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:24:31,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:24:31" (1/1) ... [2020-11-30 02:24:31,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6958f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:31, skipping insertion in model container [2020-11-30 02:24:31,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:24:31" (1/1) ... [2020-11-30 02:24:31,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:24:31,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:24:32,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:24:32,519 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:24:32,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:24:32,674 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:24:32,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32 WrapperNode [2020-11-30 02:24:32,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:24:32,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:24:32,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:24:32,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:24:32,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:24:32,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:24:32,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:24:32,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:24:32,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... [2020-11-30 02:24:32,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:24:32,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:24:32,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:24:32,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:24:32,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/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 [2020-11-30 02:24:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:24:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:24:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:24:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:24:35,547 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:24:35,547 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:24:35,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:24:35 BoogieIcfgContainer [2020-11-30 02:24:35,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:24:35,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:24:35,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:24:35,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:24:35,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:24:31" (1/3) ... [2020-11-30 02:24:35,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a22e32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:24:35, skipping insertion in model container [2020-11-30 02:24:35,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:32" (2/3) ... [2020-11-30 02:24:35,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a22e32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:24:35, skipping insertion in model container [2020-11-30 02:24:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:24:35" (3/3) ... [2020-11-30 02:24:35,564 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-11-30 02:24:35,577 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:24:35,582 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:24:35,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:24:35,637 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:24:35,638 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:24:35,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:24:35,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:24:35,638 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:24:35,639 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:24:35,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:24:35,639 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:24:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-30 02:24:35,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-30 02:24:35,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:35,669 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] [2020-11-30 02:24:35,670 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:35,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1520708461, now seen corresponding path program 1 times [2020-11-30 02:24:35,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:35,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417383411] [2020-11-30 02:24:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:36,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417383411] [2020-11-30 02:24:36,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:36,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:36,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793754912] [2020-11-30 02:24:36,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:24:36,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:24:36,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:24:36,390 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-30 02:24:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:37,422 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-30 02:24:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:24:37,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-30 02:24:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:37,439 INFO L225 Difference]: With dead ends: 297 [2020-11-30 02:24:37,439 INFO L226 Difference]: Without dead ends: 216 [2020-11-30 02:24:37,444 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 [2020-11-30 02:24:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-30 02:24:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-30 02:24:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-30 02:24:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-30 02:24:37,531 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-30 02:24:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:37,532 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-30 02:24:37,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:24:37,533 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-30 02:24:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-30 02:24:37,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:37,544 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] [2020-11-30 02:24:37,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:24:37,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:37,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1832090308, now seen corresponding path program 1 times [2020-11-30 02:24:37,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:37,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370669738] [2020-11-30 02:24:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:37,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370669738] [2020-11-30 02:24:37,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:37,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:37,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725645545] [2020-11-30 02:24:37,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:24:37,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:37,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:24:37,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:24:37,866 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-30 02:24:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:38,824 INFO L93 Difference]: Finished difference Result 571 states and 986 transitions. [2020-11-30 02:24:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:24:38,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-30 02:24:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:38,829 INFO L225 Difference]: With dead ends: 571 [2020-11-30 02:24:38,829 INFO L226 Difference]: Without dead ends: 358 [2020-11-30 02:24:38,832 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 [2020-11-30 02:24:38,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-30 02:24:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2020-11-30 02:24:38,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-30 02:24:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-30 02:24:38,857 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-30 02:24:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:38,857 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-30 02:24:38,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:24:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-30 02:24:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-30 02:24:38,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:38,860 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] [2020-11-30 02:24:38,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:24:38,861 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:38,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1009064264, now seen corresponding path program 1 times [2020-11-30 02:24:38,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:38,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892205666] [2020-11-30 02:24:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:38,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892205666] [2020-11-30 02:24:38,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:38,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:38,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050158107] [2020-11-30 02:24:38,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:24:38,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:24:38,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:24:38,970 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-30 02:24:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:39,772 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-30 02:24:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:24:39,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-30 02:24:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:39,785 INFO L225 Difference]: With dead ends: 573 [2020-11-30 02:24:39,786 INFO L226 Difference]: Without dead ends: 358 [2020-11-30 02:24:39,788 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 [2020-11-30 02:24:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-30 02:24:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-30 02:24:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-30 02:24:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2020-11-30 02:24:39,824 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2020-11-30 02:24:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:39,824 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2020-11-30 02:24:39,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:24:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2020-11-30 02:24:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-30 02:24:39,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:39,836 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] [2020-11-30 02:24:39,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:24:39,836 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:39,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1460491294, now seen corresponding path program 1 times [2020-11-30 02:24:39,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:39,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155869461] [2020-11-30 02:24:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 02:24:39,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155869461] [2020-11-30 02:24:39,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:39,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:39,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674077672] [2020-11-30 02:24:39,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:24:39,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:39,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:24:39,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:24:39,965 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2020-11-30 02:24:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:40,500 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2020-11-30 02:24:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:24:40,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-11-30 02:24:40,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:40,505 INFO L225 Difference]: With dead ends: 999 [2020-11-30 02:24:40,505 INFO L226 Difference]: Without dead ends: 642 [2020-11-30 02:24:40,507 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 [2020-11-30 02:24:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-30 02:24:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-30 02:24:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-30 02:24:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2020-11-30 02:24:40,563 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 95 [2020-11-30 02:24:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:40,563 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2020-11-30 02:24:40,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:24:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2020-11-30 02:24:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-30 02:24:40,571 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:40,571 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] [2020-11-30 02:24:40,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:24:40,572 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:40,573 INFO L82 PathProgramCache]: Analyzing trace with hash 73603770, now seen corresponding path program 1 times [2020-11-30 02:24:40,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:40,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486328976] [2020-11-30 02:24:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-30 02:24:40,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486328976] [2020-11-30 02:24:40,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:40,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:24:40,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489287634] [2020-11-30 02:24:40,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:24:40,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:40,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:24:40,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:24:40,718 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2020-11-30 02:24:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:41,529 INFO L93 Difference]: Finished difference Result 1496 states and 2082 transitions. [2020-11-30 02:24:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:24:41,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-11-30 02:24:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:41,539 INFO L225 Difference]: With dead ends: 1496 [2020-11-30 02:24:41,539 INFO L226 Difference]: Without dead ends: 926 [2020-11-30 02:24:41,540 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 [2020-11-30 02:24:41,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-30 02:24:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 642. [2020-11-30 02:24:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-30 02:24:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2020-11-30 02:24:41,573 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2020-11-30 02:24:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:41,574 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2020-11-30 02:24:41,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:24:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2020-11-30 02:24:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-30 02:24:41,578 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:41,578 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] [2020-11-30 02:24:41,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:24:41,580 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1828602583, now seen corresponding path program 1 times [2020-11-30 02:24:41,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:41,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814746190] [2020-11-30 02:24:41,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-30 02:24:41,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814746190] [2020-11-30 02:24:41,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:41,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:41,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347915181] [2020-11-30 02:24:41,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:24:41,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:41,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:24:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:24:41,768 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2020-11-30 02:24:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:42,449 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2020-11-30 02:24:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:24:42,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-11-30 02:24:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:42,458 INFO L225 Difference]: With dead ends: 1496 [2020-11-30 02:24:42,458 INFO L226 Difference]: Without dead ends: 855 [2020-11-30 02:24:42,460 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 [2020-11-30 02:24:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-30 02:24:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-30 02:24:42,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-30 02:24:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2020-11-30 02:24:42,493 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2020-11-30 02:24:42,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:42,495 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2020-11-30 02:24:42,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:24:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2020-11-30 02:24:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-30 02:24:42,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:42,509 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] [2020-11-30 02:24:42,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:24:42,510 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash 566172918, now seen corresponding path program 1 times [2020-11-30 02:24:42,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:42,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095525456] [2020-11-30 02:24:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-11-30 02:24:42,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095525456] [2020-11-30 02:24:42,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:42,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:42,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552663248] [2020-11-30 02:24:42,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:24:42,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:42,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:24:42,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:24:42,705 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2020-11-30 02:24:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:43,172 INFO L93 Difference]: Finished difference Result 1780 states and 2292 transitions. [2020-11-30 02:24:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:24:43,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-11-30 02:24:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:43,181 INFO L225 Difference]: With dead ends: 1780 [2020-11-30 02:24:43,182 INFO L226 Difference]: Without dead ends: 997 [2020-11-30 02:24:43,184 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 [2020-11-30 02:24:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-30 02:24:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2020-11-30 02:24:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-30 02:24:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1113 transitions. [2020-11-30 02:24:43,222 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1113 transitions. Word has length 176 [2020-11-30 02:24:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:43,223 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1113 transitions. [2020-11-30 02:24:43,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:24:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1113 transitions. [2020-11-30 02:24:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-11-30 02:24:43,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:43,229 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] [2020-11-30 02:24:43,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:24:43,230 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash 573910622, now seen corresponding path program 1 times [2020-11-30 02:24:43,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:43,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657115564] [2020-11-30 02:24:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-11-30 02:24:43,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657115564] [2020-11-30 02:24:43,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:43,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:43,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371920022] [2020-11-30 02:24:43,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:24:43,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:43,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:24:43,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:24:43,420 INFO L87 Difference]: Start difference. First operand 855 states and 1113 transitions. Second operand 3 states. [2020-11-30 02:24:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:43,909 INFO L93 Difference]: Finished difference Result 1851 states and 2378 transitions. [2020-11-30 02:24:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:24:43,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-11-30 02:24:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:43,916 INFO L225 Difference]: With dead ends: 1851 [2020-11-30 02:24:43,919 INFO L226 Difference]: Without dead ends: 997 [2020-11-30 02:24:43,921 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 [2020-11-30 02:24:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-30 02:24:43,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-30 02:24:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-30 02:24:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1153 transitions. [2020-11-30 02:24:43,949 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1153 transitions. Word has length 219 [2020-11-30 02:24:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:43,951 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1153 transitions. [2020-11-30 02:24:43,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:24:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1153 transitions. [2020-11-30 02:24:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-30 02:24:43,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:43,956 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] [2020-11-30 02:24:43,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:24:43,957 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:43,958 INFO L82 PathProgramCache]: Analyzing trace with hash 575695831, now seen corresponding path program 1 times [2020-11-30 02:24:43,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:43,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656451018] [2020-11-30 02:24:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 253 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-11-30 02:24:44,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656451018] [2020-11-30 02:24:44,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498544390] [2020-11-30 02:24:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/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 [2020-11-30 02:24:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:24:44,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:24:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-30 02:24:44,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:24:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-30 02:24:44,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:24:44,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-30 02:24:44,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632366486] [2020-11-30 02:24:44,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:24:44,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:24:44,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:24:44,938 INFO L87 Difference]: Start difference. First operand 926 states and 1153 transitions. Second operand 3 states. [2020-11-30 02:24:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:45,420 INFO L93 Difference]: Finished difference Result 2135 states and 2648 transitions. [2020-11-30 02:24:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:24:45,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-11-30 02:24:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:45,431 INFO L225 Difference]: With dead ends: 2135 [2020-11-30 02:24:45,433 INFO L226 Difference]: Without dead ends: 1210 [2020-11-30 02:24:45,435 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 [2020-11-30 02:24:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-30 02:24:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-30 02:24:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-30 02:24:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1333 transitions. [2020-11-30 02:24:45,477 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1333 transitions. Word has length 232 [2020-11-30 02:24:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:45,478 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1333 transitions. [2020-11-30 02:24:45,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:24:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1333 transitions. [2020-11-30 02:24:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-30 02:24:45,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:45,484 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] [2020-11-30 02:24:45,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 02:24:45,698 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:45,698 INFO L82 PathProgramCache]: Analyzing trace with hash -588458507, now seen corresponding path program 1 times [2020-11-30 02:24:45,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:45,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387383251] [2020-11-30 02:24:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 02:24:46,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387383251] [2020-11-30 02:24:46,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317757835] [2020-11-30 02:24:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/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 [2020-11-30 02:24:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:46,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:24:46,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:24:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-30 02:24:46,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:24:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-30 02:24:46,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:24:46,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-30 02:24:46,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101185990] [2020-11-30 02:24:46,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:24:46,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:24:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:24:46,531 INFO L87 Difference]: Start difference. First operand 1068 states and 1333 transitions. Second operand 3 states. [2020-11-30 02:24:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:47,001 INFO L93 Difference]: Finished difference Result 2133 states and 2664 transitions. [2020-11-30 02:24:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:24:47,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-11-30 02:24:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:47,005 INFO L225 Difference]: With dead ends: 2133 [2020-11-30 02:24:47,005 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:24:47,007 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 [2020-11-30 02:24:47,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:24:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:24:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:24:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:24:47,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-11-30 02:24:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:47,009 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:24:47,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:24:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:24:47,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:24:47,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 02:24:47,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:24:47,590 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-11-30 02:24:47,804 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-11-30 02:24:47,808 INFO L274 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-11-30 02:24:47,808 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-30 02:24:47,808 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-30 02:24:47,808 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-30 02:24:47,808 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-30 02:24:47,808 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-30 02:24:47,809 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-30 02:24:47,810 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-30 02:24:47,811 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:24:47,812 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-30 02:24:47,812 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-30 02:24:47,812 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-30 02:24:47,812 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))) [2020-11-30 02:24:47,812 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-30 02:24:47,813 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-30 02:24:47,814 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-30 02:24:47,815 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-30 02:24:47,815 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-30 02:24:47,815 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-30 02:24:47,815 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))) [2020-11-30 02:24:47,815 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:24:47,815 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-30 02:24:47,815 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:24:47,816 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-30 02:24:47,816 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-30 02:24:47,816 INFO L274 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:24:47,816 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-30 02:24:47,825 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-30 02:24:47,825 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-30 02:24:47,825 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-30 02:24:47,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:24:47 BoogieIcfgContainer [2020-11-30 02:24:47,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:24:47,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:24:47,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:24:47,866 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:24:47,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:24:35" (3/4) ... [2020-11-30 02:24:47,870 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:24:47,918 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-30 02:24:47,920 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:24:47,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:24:47,924 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:24:48,092 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2f9bff1d-5f33-418f-877d-b077b7ae844c/bin/utaipan/witness.graphml [2020-11-30 02:24:48,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:24:48,100 INFO L168 Benchmark]: Toolchain (without parser) took 16250.88 ms. Allocated memory was 94.4 MB in the beginning and 358.6 MB in the end (delta: 264.2 MB). Free memory was 63.4 MB in the beginning and 311.4 MB in the end (delta: -248.0 MB). Peak memory consumption was 213.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:48,100 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:24:48,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.66 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 54.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:48,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.37 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 48.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:48,101 INFO L168 Benchmark]: Boogie Preprocessor took 100.37 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 48.5 MB in the beginning and 87.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:48,102 INFO L168 Benchmark]: RCFGBuilder took 2665.39 ms. Allocated memory was 113.2 MB in the beginning and 169.9 MB in the end (delta: 56.6 MB). Free memory was 87.0 MB in the beginning and 85.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:48,102 INFO L168 Benchmark]: TraceAbstraction took 12308.98 ms. Allocated memory was 169.9 MB in the beginning and 358.6 MB in the end (delta: 188.7 MB). Free memory was 85.3 MB in the beginning and 118.3 MB in the end (delta: -33.0 MB). Peak memory consumption was 156.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:48,103 INFO L168 Benchmark]: Witness Printer took 235.36 ms. Allocated memory is still 358.6 MB. Free memory was 118.3 MB in the beginning and 311.4 MB in the end (delta: -193.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:48,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 819.66 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 54.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.37 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 48.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 100.37 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 48.5 MB in the beginning and 87.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2665.39 ms. Allocated memory was 113.2 MB in the beginning and 169.9 MB in the end (delta: 56.6 MB). Free memory was 87.0 MB in the beginning and 85.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12308.98 ms. Allocated memory was 169.9 MB in the beginning and 358.6 MB in the end (delta: 188.7 MB). Free memory was 85.3 MB in the beginning and 118.3 MB in the end (delta: -33.0 MB). Peak memory consumption was 156.8 MB. Max. memory is 16.1 GB. * Witness Printer took 235.36 ms. Allocated memory is still 358.6 MB. Free memory was 118.3 MB in the beginning and 311.4 MB in the end (delta: -193.1 MB). Peak memory consumption was 3.0 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: 11.5s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 464 SDtfs, 1007 SDslu, 56 SDs, 0 SdLazy, 2505 SolverSat, 717 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s 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: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 923 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 177 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4908 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 328 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.0s 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...