./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label55.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_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/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 39009f796c61c7f90c10af519e18db45d10241d7 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:49:47,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:49:47,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:49:47,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:49:47,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:49:47,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:49:47,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:49:47,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:49:47,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:49:47,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:49:47,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:49:47,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:49:47,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:49:47,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:49:47,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:49:47,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:49:47,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:49:47,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:49:47,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:49:47,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:49:47,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:49:47,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:49:47,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:49:47,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:49:47,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:49:47,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:49:47,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:49:47,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:49:47,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:49:47,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:49:47,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:49:47,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:49:47,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:49:47,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:49:47,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:49:47,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:49:47,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:49:47,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:49:47,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:49:48,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:49:48,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:49:48,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:49:48,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:49:48,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:49:48,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:49:48,065 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:49:48,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:49:48,065 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:49:48,066 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:49:48,066 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:49:48,066 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:49:48,067 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:49:48,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:49:48,068 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:49:48,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:49:48,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:49:48,069 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:49:48,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:49:48,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:49:48,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:49:48,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:49:48,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:49:48,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:49:48,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:49:48,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:49:48,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:49:48,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:49:48,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:49:48,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:49:48,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:49:48,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:49:48,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:49:48,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:49:48,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:49:48,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:49:48,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:49:48,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:49:48,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:49:48,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:49:48,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:49:48,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:49:48,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:49:48,078 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_f2608785-1406-4419-a685-35705a2deadd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39009f796c61c7f90c10af519e18db45d10241d7 [2020-11-22 12:49:48,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:49:48,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:49:48,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:49:48,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:49:48,449 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:49:48,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c [2020-11-22 12:49:48,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/data/689646978/780fe10141f4467d8562fb17fcab6048/FLAGa92614373 [2020-11-22 12:49:49,335 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:49:49,336 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/sv-benchmarks/c/eca-rers2012/Problem01_label55.c [2020-11-22 12:49:49,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/data/689646978/780fe10141f4467d8562fb17fcab6048/FLAGa92614373 [2020-11-22 12:49:49,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/data/689646978/780fe10141f4467d8562fb17fcab6048 [2020-11-22 12:49:49,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:49:49,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:49:49,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:49,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:49:49,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:49:49,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:49:49" (1/1) ... [2020-11-22 12:49:49,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be12cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:49, skipping insertion in model container [2020-11-22 12:49:49,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:49:49" (1/1) ... [2020-11-22 12:49:49,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:49:49,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:49:50,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:50,138 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:49:50,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:50,341 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:49:50,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50 WrapperNode [2020-11-22 12:49:50,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:50,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:50,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:49:50,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:49:50,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:50,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:49:50,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:49:50,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:49:50,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... [2020-11-22 12:49:50,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:49:50,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:49:50,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:49:50,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:49:50,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:49:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:49:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:49:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:49:50,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:49:53,517 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:49:53,518 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:49:53,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:53 BoogieIcfgContainer [2020-11-22 12:49:53,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:49:53,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:49:53,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:49:53,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:49:53,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:49:49" (1/3) ... [2020-11-22 12:49:53,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474472d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:53, skipping insertion in model container [2020-11-22 12:49:53,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:50" (2/3) ... [2020-11-22 12:49:53,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474472d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:53, skipping insertion in model container [2020-11-22 12:49:53,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:53" (3/3) ... [2020-11-22 12:49:53,533 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-11-22 12:49:53,547 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:49:53,552 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:49:53,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:49:53,611 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:49:53,612 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:49:53,612 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:49:53,612 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:49:53,612 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:49:53,612 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:49:53,613 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:49:53,613 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:49:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 12:49:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 12:49:53,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:53,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:53,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:53,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1520710253, now seen corresponding path program 1 times [2020-11-22 12:49:53,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:53,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981744343] [2020-11-22 12:49:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:54,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981744343] [2020-11-22 12:49:54,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:54,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:49:54,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433142880] [2020-11-22 12:49:54,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:49:54,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:54,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:49:54,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:54,195 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-22 12:49:54,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:54,814 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-22 12:49:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:49:54,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-22 12:49:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:54,836 INFO L225 Difference]: With dead ends: 224 [2020-11-22 12:49:54,836 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 12:49:54,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:54,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 12:49:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-22 12:49:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 12:49:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2020-11-22 12:49:54,912 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2020-11-22 12:49:54,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:54,914 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2020-11-22 12:49:54,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:49:54,914 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2020-11-22 12:49:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-22 12:49:54,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:54,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:54,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:49:54,921 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:54,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1531542105, now seen corresponding path program 1 times [2020-11-22 12:49:54,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:54,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736685378] [2020-11-22 12:49:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 12:49:55,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736685378] [2020-11-22 12:49:55,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:55,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:49:55,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042750192] [2020-11-22 12:49:55,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:49:55,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:55,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:49:55,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:55,070 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 3 states. [2020-11-22 12:49:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:55,612 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2020-11-22 12:49:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:49:55,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-11-22 12:49:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:55,616 INFO L225 Difference]: With dead ends: 431 [2020-11-22 12:49:55,617 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 12:49:55,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 12:49:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-22 12:49:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-22 12:49:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-11-22 12:49:55,637 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2020-11-22 12:49:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:55,637 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-11-22 12:49:55,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:49:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-11-22 12:49:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-22 12:49:55,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:55,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:55,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:49:55,642 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:55,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2064955867, now seen corresponding path program 1 times [2020-11-22 12:49:55,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:55,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888799271] [2020-11-22 12:49:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:55,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888799271] [2020-11-22 12:49:55,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:55,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:49:55,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581508989] [2020-11-22 12:49:55,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:49:55,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:49:55,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:49:55,773 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-11-22 12:49:56,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:56,530 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-11-22 12:49:56,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:49:56,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-22 12:49:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:56,535 INFO L225 Difference]: With dead ends: 715 [2020-11-22 12:49:56,535 INFO L226 Difference]: Without dead ends: 429 [2020-11-22 12:49:56,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:49:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-22 12:49:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-22 12:49:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 12:49:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-11-22 12:49:56,570 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-11-22 12:49:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:56,571 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-11-22 12:49:56,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:49:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-11-22 12:49:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-22 12:49:56,575 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:56,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:56,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:49:56,576 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:56,576 INFO L82 PathProgramCache]: Analyzing trace with hash -480431323, now seen corresponding path program 1 times [2020-11-22 12:49:56,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:56,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025509792] [2020-11-22 12:49:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 12:49:56,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025509792] [2020-11-22 12:49:56,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:56,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:49:56,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391413531] [2020-11-22 12:49:56,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:49:56,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:56,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:49:56,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:56,701 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-11-22 12:49:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:57,162 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-11-22 12:49:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:49:57,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-22 12:49:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:57,166 INFO L225 Difference]: With dead ends: 999 [2020-11-22 12:49:57,166 INFO L226 Difference]: Without dead ends: 571 [2020-11-22 12:49:57,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-22 12:49:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-11-22 12:49:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 12:49:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-11-22 12:49:57,198 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-11-22 12:49:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:57,199 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-11-22 12:49:57,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:49:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-11-22 12:49:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-22 12:49:57,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:57,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:57,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:49:57,204 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash -363771169, now seen corresponding path program 1 times [2020-11-22 12:49:57,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:57,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799904154] [2020-11-22 12:49:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-22 12:49:57,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799904154] [2020-11-22 12:49:57,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:57,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:49:57,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334358515] [2020-11-22 12:49:57,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:49:57,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:49:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:49:57,360 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2020-11-22 12:49:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:58,048 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2020-11-22 12:49:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:49:58,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-22 12:49:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:58,054 INFO L225 Difference]: With dead ends: 1354 [2020-11-22 12:49:58,055 INFO L226 Difference]: Without dead ends: 784 [2020-11-22 12:49:58,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:49:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-11-22 12:49:58,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2020-11-22 12:49:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:49:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 998 transitions. [2020-11-22 12:49:58,098 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 998 transitions. Word has length 113 [2020-11-22 12:49:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:58,099 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 998 transitions. [2020-11-22 12:49:58,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:49:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 998 transitions. [2020-11-22 12:49:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-22 12:49:58,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:58,103 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:58,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:49:58,104 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:58,104 INFO L82 PathProgramCache]: Analyzing trace with hash -338584715, now seen corresponding path program 1 times [2020-11-22 12:49:58,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:58,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304097101] [2020-11-22 12:49:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-22 12:49:58,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304097101] [2020-11-22 12:49:58,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:58,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:49:58,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232065950] [2020-11-22 12:49:58,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:49:58,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:58,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:49:58,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:58,239 INFO L87 Difference]: Start difference. First operand 784 states and 998 transitions. Second operand 3 states. [2020-11-22 12:49:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:58,672 INFO L93 Difference]: Finished difference Result 1849 states and 2332 transitions. [2020-11-22 12:49:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:49:58,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-22 12:49:58,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:58,673 INFO L225 Difference]: With dead ends: 1849 [2020-11-22 12:49:58,674 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:49:58,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:49:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:49:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:49:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:49:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:49:58,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2020-11-22 12:49:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:58,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:49:58,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:49:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:49:58,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:49:58,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:49:58,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:49:58,743 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 12:49:58,743 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 12:49:58,743 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 12:49:58,743 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 12:49:58,743 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 12:49:58,743 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 12:49:58,744 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 12:49:58,744 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 12:49:58,744 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 12:49:58,744 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 12:49:58,744 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 12:49:58,744 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 12:49:58,744 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 12:49:58,745 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 12:49:58,746 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 12:49:58,746 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 12:49:58,746 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 12:49:58,746 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 12:49:58,746 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 12:49:58,746 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 12:49:58,746 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 12:49:58,747 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 12:49:58,748 INFO L274 CegarLoopResult]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:49:58,748 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:49:58,748 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 12:49:58,748 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 12:49:58,748 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 12:49:58,748 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (or (<= ~a16~0 5) (= ~a20~0 1) (<= 15 ~a8~0)) [2020-11-22 12:49:58,749 INFO L274 CegarLoopResult]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:49:58,749 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 12:49:58,749 INFO L274 CegarLoopResult]: For program point L519(line 519) no Hoare annotation was computed. [2020-11-22 12:49:58,749 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 12:49:58,749 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 12:49:58,749 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 12:49:58,749 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 12:49:58,750 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 12:49:58,750 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 12:49:58,750 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:49:58,750 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 12:49:58,750 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 12:49:58,750 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 12:49:58,750 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 12:49:58,750 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 12:49:58,751 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 12:49:58,751 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 12:49:58,751 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 12:49:58,751 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 12:49:58,751 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 12:49:58,751 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 12:49:58,751 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 12:49:58,752 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 12:49:58,752 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 12:49:58,752 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 12:49:58,752 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (or (<= ~a16~0 5) (= ~a20~0 1) (<= 15 ~a8~0)) [2020-11-22 12:49:58,752 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 12:49:58,752 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:49:58,752 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 12:49:58,753 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 12:49:58,753 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 12:49:58,753 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 12:49:58,753 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 12:49:58,753 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 12:49:58,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:49:58 BoogieIcfgContainer [2020-11-22 12:49:58,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:49:58,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:49:58,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:49:58,782 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:49:58,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:53" (3/4) ... [2020-11-22 12:49:58,786 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:49:58,818 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-22 12:49:58,819 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:49:58,821 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:49:58,823 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:49:59,002 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f2608785-1406-4419-a685-35705a2deadd/bin/utaipan/witness.graphml [2020-11-22 12:49:59,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:49:59,005 INFO L168 Benchmark]: Toolchain (without parser) took 9519.13 ms. Allocated memory was 92.3 MB in the beginning and 180.4 MB in the end (delta: 88.1 MB). Free memory was 56.8 MB in the beginning and 51.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 93.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:59,005 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:59,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 856.22 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 52.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:59,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.41 ms. Allocated memory is still 92.3 MB. Free memory was 52.1 MB in the beginning and 46.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:59,008 INFO L168 Benchmark]: Boogie Preprocessor took 100.29 ms. Allocated memory is still 92.3 MB. Free memory was 46.5 MB in the beginning and 42.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:59,010 INFO L168 Benchmark]: RCFGBuilder took 2973.11 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 42.0 MB in the beginning and 49.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:59,010 INFO L168 Benchmark]: TraceAbstraction took 5257.93 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 48.8 MB in the beginning and 67.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:59,011 INFO L168 Benchmark]: Witness Printer took 220.62 ms. Allocated memory is still 180.4 MB. Free memory was 67.3 MB in the beginning and 51.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:59,013 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 71.3 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 856.22 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 52.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.41 ms. Allocated memory is still 92.3 MB. Free memory was 52.1 MB in the beginning and 46.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 100.29 ms. Allocated memory is still 92.3 MB. Free memory was 46.5 MB in the beginning and 42.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2973.11 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 42.0 MB in the beginning and 49.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5257.93 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 48.8 MB in the beginning and 67.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * Witness Printer took 220.62 ms. Allocated memory is still 180.4 MB. Free memory was 67.3 MB in the beginning and 51.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 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 || a20 == 1) || 15 <= a8 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (a16 <= 5 || a20 == 1) || 15 <= a8 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 520 SDslu, 30 SDs, 0 SdLazy, 1493 SolverSat, 470 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=784occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 142 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 21 HoareAnnotationTreeSize, 3 FomulaSimplifications, 508 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 116555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 235/235 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...