./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.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_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/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 0675521d022a764ecdc1621f141761ef94d4be70 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:54:04,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:54:04,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:54:04,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:54:04,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:54:04,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:54:04,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:54:04,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:54:04,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:54:04,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:54:04,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:54:04,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:54:04,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:54:04,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:54:04,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:54:04,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:54:04,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:54:04,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:54:04,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:54:04,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:54:04,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:54:04,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:54:04,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:54:04,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:54:04,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:54:04,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:54:04,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:54:04,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:54:04,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:54:04,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:54:04,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:54:04,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:54:04,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:54:04,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:54:04,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:54:04,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:54:04,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:54:04,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:54:04,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:54:04,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:54:04,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:54:04,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:54:04,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:54:04,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:54:04,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:54:04,266 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:54:04,266 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:54:04,266 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:54:04,266 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:54:04,267 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:54:04,267 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:54:04,267 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:54:04,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:54:04,268 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:54:04,269 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:54:04,269 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:54:04,269 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:54:04,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:54:04,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:54:04,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:54:04,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:54:04,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:54:04,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:54:04,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:54:04,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:54:04,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:54:04,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:54:04,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:54:04,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:54:04,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:54:04,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:54:04,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:54:04,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:54:04,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:54:04,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:54:04,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:54:04,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:54:04,275 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:54:04,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:54:04,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:54:04,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:54:04,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:54:04,276 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_f5ee5985-fad2-4a6a-8b79-554ece3a0344/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0675521d022a764ecdc1621f141761ef94d4be70 [2020-11-22 12:54:04,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:54:04,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:54:04,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:54:04,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:54:04,638 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:54:04,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2020-11-22 12:54:04,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/data/179b44104/c514bda518e8437fab8241a7cb72ee45/FLAGbd0126fe1 [2020-11-22 12:54:05,294 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:54:05,294 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2020-11-22 12:54:05,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/data/179b44104/c514bda518e8437fab8241a7cb72ee45/FLAGbd0126fe1 [2020-11-22 12:54:05,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/data/179b44104/c514bda518e8437fab8241a7cb72ee45 [2020-11-22 12:54:05,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:54:05,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:54:05,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:05,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:54:05,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:54:05,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:05" (1/1) ... [2020-11-22 12:54:05,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d24dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:05, skipping insertion in model container [2020-11-22 12:54:05,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:05" (1/1) ... [2020-11-22 12:54:05,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:54:05,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:54:06,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:06,111 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:54:06,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:06,232 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:54:06,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06 WrapperNode [2020-11-22 12:54:06,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:06,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:06,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:54:06,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:54:06,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:06,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:54:06,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:54:06,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:54:06,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... [2020-11-22 12:54:06,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:54:06,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:54:06,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:54:06,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:54:06,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/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 12:54:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:54:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:54:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:54:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:54:08,924 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:54:08,925 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:54:08,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:08 BoogieIcfgContainer [2020-11-22 12:54:08,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:54:08,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:54:08,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:54:08,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:54:08,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:54:05" (1/3) ... [2020-11-22 12:54:08,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411146d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:08, skipping insertion in model container [2020-11-22 12:54:08,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:06" (2/3) ... [2020-11-22 12:54:08,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411146d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:08, skipping insertion in model container [2020-11-22 12:54:08,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:08" (3/3) ... [2020-11-22 12:54:08,939 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-11-22 12:54:08,949 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:54:08,953 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:54:08,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:54:09,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:54:09,002 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:54:09,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:54:09,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:54:09,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:54:09,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:54:09,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:54:09,003 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:54:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 12:54:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 12:54:09,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:09,034 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 12:54:09,034 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:09,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1520711533, now seen corresponding path program 1 times [2020-11-22 12:54:09,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:09,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831697548] [2020-11-22 12:54:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:09,442 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 12:54:09,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831697548] [2020-11-22 12:54:09,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:09,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:54:09,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959621747] [2020-11-22 12:54:09,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:09,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:09,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:09,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:09,467 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-22 12:54:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:10,076 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-22 12:54:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:10,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-22 12:54:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:10,099 INFO L225 Difference]: With dead ends: 224 [2020-11-22 12:54:10,099 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 12:54:10,102 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 12:54:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 12:54:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-22 12:54:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 12:54:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-22 12:54:10,171 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-22 12:54:10,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:10,173 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-22 12:54:10,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-22 12:54:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-22 12:54:10,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:10,179 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-11-22 12:54:10,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:54:10,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:10,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1975134654, now seen corresponding path program 1 times [2020-11-22 12:54:10,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:10,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754392434] [2020-11-22 12:54:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:10,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754392434] [2020-11-22 12:54:10,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:10,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:54:10,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998893685] [2020-11-22 12:54:10,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:10,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:10,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:10,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:10,292 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-22 12:54:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:10,770 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-22 12:54:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:10,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-22 12:54:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:10,773 INFO L225 Difference]: With dead ends: 431 [2020-11-22 12:54:10,774 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 12:54:10,775 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 12:54:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 12:54:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-22 12:54:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-22 12:54:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-11-22 12:54:10,802 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2020-11-22 12:54:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:10,803 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-11-22 12:54:10,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-11-22 12:54:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-22 12:54:10,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:10,810 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 12:54:10,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:54:10,810 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:10,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2064957147, now seen corresponding path program 1 times [2020-11-22 12:54:10,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:10,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469181282] [2020-11-22 12:54:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:10,992 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 12:54:10,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469181282] [2020-11-22 12:54:10,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:10,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:54:10,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629195330] [2020-11-22 12:54:10,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:54:10,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:10,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:54:10,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:54:10,995 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-11-22 12:54:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:11,834 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-11-22 12:54:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:54:11,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-22 12:54:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:11,839 INFO L225 Difference]: With dead ends: 715 [2020-11-22 12:54:11,839 INFO L226 Difference]: Without dead ends: 429 [2020-11-22 12:54:11,841 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 12:54:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-22 12:54:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-22 12:54:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 12:54:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-11-22 12:54:11,874 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-11-22 12:54:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:11,875 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-11-22 12:54:11,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:54:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-11-22 12:54:11,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-22 12:54:11,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:11,882 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 12:54:11,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:54:11,883 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash -480430043, now seen corresponding path program 1 times [2020-11-22 12:54:11,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:11,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190001285] [2020-11-22 12:54:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:11,978 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 12:54:11,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190001285] [2020-11-22 12:54:11,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:11,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:54:11,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43553635] [2020-11-22 12:54:11,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:11,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:11,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:11,982 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-11-22 12:54:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:12,365 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-11-22 12:54:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:12,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-22 12:54:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:12,369 INFO L225 Difference]: With dead ends: 999 [2020-11-22 12:54:12,369 INFO L226 Difference]: Without dead ends: 571 [2020-11-22 12:54:12,370 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 12:54:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-22 12:54:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-11-22 12:54:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 12:54:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-11-22 12:54:12,399 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-11-22 12:54:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:12,400 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-11-22 12:54:12,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-11-22 12:54:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-22 12:54:12,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:12,414 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 12:54:12,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:54:12,414 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash -363769889, now seen corresponding path program 1 times [2020-11-22 12:54:12,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:12,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421495499] [2020-11-22 12:54:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:12,519 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 12:54:12,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421495499] [2020-11-22 12:54:12,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:12,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:54:12,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817967151] [2020-11-22 12:54:12,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:54:12,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:12,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:54:12,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:54:12,524 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2020-11-22 12:54:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:13,161 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2020-11-22 12:54:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:54:13,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-22 12:54:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:13,167 INFO L225 Difference]: With dead ends: 1354 [2020-11-22 12:54:13,167 INFO L226 Difference]: Without dead ends: 784 [2020-11-22 12:54:13,168 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 12:54:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-11-22 12:54:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2020-11-22 12:54:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:54:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 998 transitions. [2020-11-22 12:54:13,207 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 998 transitions. Word has length 113 [2020-11-22 12:54:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:13,208 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 998 transitions. [2020-11-22 12:54:13,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:54:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 998 transitions. [2020-11-22 12:54:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-22 12:54:13,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:13,212 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 12:54:13,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:54:13,213 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:13,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:13,214 INFO L82 PathProgramCache]: Analyzing trace with hash -338583435, now seen corresponding path program 1 times [2020-11-22 12:54:13,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:13,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384989454] [2020-11-22 12:54:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:13,286 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 12:54:13,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384989454] [2020-11-22 12:54:13,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:13,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:54:13,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475364213] [2020-11-22 12:54:13,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:13,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:13,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:13,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:13,288 INFO L87 Difference]: Start difference. First operand 784 states and 998 transitions. Second operand 3 states. [2020-11-22 12:54:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:13,713 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2020-11-22 12:54:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:13,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-22 12:54:13,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:13,723 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 12:54:13,723 INFO L226 Difference]: Without dead ends: 1068 [2020-11-22 12:54:13,724 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 12:54:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-22 12:54:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-22 12:54:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-22 12:54:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1175 transitions. [2020-11-22 12:54:13,760 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1175 transitions. Word has length 122 [2020-11-22 12:54:13,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:13,760 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1175 transitions. [2020-11-22 12:54:13,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1175 transitions. [2020-11-22 12:54:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-22 12:54:13,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:13,772 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-22 12:54:13,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:54:13,773 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash -618941123, now seen corresponding path program 1 times [2020-11-22 12:54:13,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:13,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056650599] [2020-11-22 12:54:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-22 12:54:13,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056650599] [2020-11-22 12:54:13,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:13,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:54:13,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430499303] [2020-11-22 12:54:13,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:13,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:13,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:13,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:13,911 INFO L87 Difference]: Start difference. First operand 926 states and 1175 transitions. Second operand 3 states. [2020-11-22 12:54:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:14,279 INFO L93 Difference]: Finished difference Result 1851 states and 2349 transitions. [2020-11-22 12:54:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:14,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-22 12:54:14,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:14,287 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 12:54:14,287 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:54:14,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:54:14,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-11-22 12:54:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-22 12:54:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1161 transitions. [2020-11-22 12:54:14,315 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1161 transitions. Word has length 138 [2020-11-22 12:54:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:14,316 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1161 transitions. [2020-11-22 12:54:14,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1161 transitions. [2020-11-22 12:54:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-22 12:54:14,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:14,335 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:14,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:54:14,335 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:14,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2031265499, now seen corresponding path program 1 times [2020-11-22 12:54:14,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:14,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101136779] [2020-11-22 12:54:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-22 12:54:14,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101136779] [2020-11-22 12:54:14,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:14,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:54:14,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980947675] [2020-11-22 12:54:14,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:54:14,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:14,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:54:14,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:54:14,487 INFO L87 Difference]: Start difference. First operand 926 states and 1161 transitions. Second operand 4 states. [2020-11-22 12:54:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:15,049 INFO L93 Difference]: Finished difference Result 1922 states and 2403 transitions. [2020-11-22 12:54:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:54:15,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-22 12:54:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:15,073 INFO L225 Difference]: With dead ends: 1922 [2020-11-22 12:54:15,073 INFO L226 Difference]: Without dead ends: 997 [2020-11-22 12:54:15,074 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 12:54:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-22 12:54:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-22 12:54:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 12:54:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-22 12:54:15,101 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2020-11-22 12:54:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:15,103 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-22 12:54:15,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:54:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-22 12:54:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-22 12:54:15,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:15,107 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:15,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:54:15,109 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:15,109 INFO L82 PathProgramCache]: Analyzing trace with hash -536184206, now seen corresponding path program 1 times [2020-11-22 12:54:15,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:15,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103415862] [2020-11-22 12:54:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-22 12:54:15,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103415862] [2020-11-22 12:54:15,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:15,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:54:15,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192551635] [2020-11-22 12:54:15,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:15,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:15,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:15,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:15,261 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-22 12:54:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:15,763 INFO L93 Difference]: Finished difference Result 2277 states and 2824 transitions. [2020-11-22 12:54:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:15,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-22 12:54:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:15,771 INFO L225 Difference]: With dead ends: 2277 [2020-11-22 12:54:15,771 INFO L226 Difference]: Without dead ends: 1281 [2020-11-22 12:54:15,773 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 12:54:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-22 12:54:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-11-22 12:54:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 12:54:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2020-11-22 12:54:15,805 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 171 [2020-11-22 12:54:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:15,807 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2020-11-22 12:54:15,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2020-11-22 12:54:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-11-22 12:54:15,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:15,812 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:15,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:54:15,812 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash 677812987, now seen corresponding path program 1 times [2020-11-22 12:54:15,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:15,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365978597] [2020-11-22 12:54:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-22 12:54:15,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365978597] [2020-11-22 12:54:15,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:15,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:54:15,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819931271] [2020-11-22 12:54:15,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:15,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:15,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:15,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:15,964 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2020-11-22 12:54:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:16,547 INFO L93 Difference]: Finished difference Result 2277 states and 2796 transitions. [2020-11-22 12:54:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:16,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-11-22 12:54:16,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:16,557 INFO L225 Difference]: With dead ends: 2277 [2020-11-22 12:54:16,557 INFO L226 Difference]: Without dead ends: 1210 [2020-11-22 12:54:16,559 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 12:54:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-22 12:54:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-11-22 12:54:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-22 12:54:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1375 transitions. [2020-11-22 12:54:16,607 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1375 transitions. Word has length 220 [2020-11-22 12:54:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:16,608 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1375 transitions. [2020-11-22 12:54:16,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1375 transitions. [2020-11-22 12:54:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-11-22 12:54:16,615 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:16,616 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-22 12:54:16,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:54:16,616 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:16,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:16,617 INFO L82 PathProgramCache]: Analyzing trace with hash 733154466, now seen corresponding path program 1 times [2020-11-22 12:54:16,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:16,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998186681] [2020-11-22 12:54:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 252 proven. 35 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-22 12:54:16,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998186681] [2020-11-22 12:54:16,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651845900] [2020-11-22 12:54:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:54:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:17,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:54:17,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-11-22 12:54:17,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-11-22 12:54:17,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:54:17,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 12:54:17,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506421927] [2020-11-22 12:54:17,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:17,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:17,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:17,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:54:17,654 INFO L87 Difference]: Start difference. First operand 1139 states and 1375 transitions. Second operand 3 states. [2020-11-22 12:54:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:18,182 INFO L93 Difference]: Finished difference Result 2490 states and 3053 transitions. [2020-11-22 12:54:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:18,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-11-22 12:54:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:18,193 INFO L225 Difference]: With dead ends: 2490 [2020-11-22 12:54:18,193 INFO L226 Difference]: Without dead ends: 1352 [2020-11-22 12:54:18,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:54:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-22 12:54:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2020-11-22 12:54:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-11-22 12:54:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1584 transitions. [2020-11-22 12:54:18,242 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1584 transitions. Word has length 233 [2020-11-22 12:54:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:18,242 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1584 transitions. [2020-11-22 12:54:18,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1584 transitions. [2020-11-22 12:54:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-22 12:54:18,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:18,250 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-22 12:54:18,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-22 12:54:18,476 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash -995891644, now seen corresponding path program 1 times [2020-11-22 12:54:18,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:18,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816360022] [2020-11-22 12:54:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-22 12:54:18,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816360022] [2020-11-22 12:54:18,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:18,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:54:18,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594790665] [2020-11-22 12:54:18,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:18,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:18,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:18,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:54:18,801 INFO L87 Difference]: Start difference. First operand 1281 states and 1584 transitions. Second operand 3 states. [2020-11-22 12:54:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:19,388 INFO L93 Difference]: Finished difference Result 2774 states and 3405 transitions. [2020-11-22 12:54:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:19,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-11-22 12:54:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:19,401 INFO L225 Difference]: With dead ends: 2774 [2020-11-22 12:54:19,402 INFO L226 Difference]: Without dead ends: 1281 [2020-11-22 12:54:19,404 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 12:54:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-22 12:54:19,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-11-22 12:54:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-22 12:54:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1462 transitions. [2020-11-22 12:54:19,456 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1462 transitions. Word has length 242 [2020-11-22 12:54:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:19,457 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1462 transitions. [2020-11-22 12:54:19,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1462 transitions. [2020-11-22 12:54:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-11-22 12:54:19,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:19,466 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:19,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 12:54:19,467 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:19,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:19,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1666825104, now seen corresponding path program 1 times [2020-11-22 12:54:19,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:19,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963448305] [2020-11-22 12:54:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 334 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-22 12:54:20,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963448305] [2020-11-22 12:54:20,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992108125] [2020-11-22 12:54:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:54:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:20,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:54:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-11-22 12:54:20,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-11-22 12:54:20,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:54:20,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 12:54:20,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36892675] [2020-11-22 12:54:20,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:54:20,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:54:20,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:54:20,430 INFO L87 Difference]: Start difference. First operand 1210 states and 1462 transitions. Second operand 3 states. [2020-11-22 12:54:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:20,831 INFO L93 Difference]: Finished difference Result 2417 states and 2928 transitions. [2020-11-22 12:54:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:54:20,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2020-11-22 12:54:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:20,832 INFO L225 Difference]: With dead ends: 2417 [2020-11-22 12:54:20,832 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:54:20,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:54:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:54:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:54:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:54:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:54:20,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2020-11-22 12:54:20,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:20,836 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:54:20,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:54:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:54:20,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:54:21,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-22 12:54:21,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:54:21,423 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-22 12:54:21,680 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 12:54:21,684 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 12:54:21,685 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 12:54:21,686 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 12:54:21,687 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:54:21,687 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 12:54:21,687 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 12:54:21,687 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 12:54:21,687 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (<= 15 ~a8~0)) (.cse9 (<= ~a16~0 4)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a20~0 1)) (.cse6 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse1 .cse5 .cse6) (and .cse7 .cse8 .cse1 .cse6) (and .cse3 .cse4 .cse8 .cse2) (and .cse0 .cse1 .cse5 .cse6) (and .cse9 .cse8 .cse2) (and .cse7 .cse9 .cse8 .cse6) (and .cse7 .cse4 .cse8) (and .cse0 .cse6 .cse2) (and .cse0 .cse4))) [2020-11-22 12:54:21,687 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 12:54:21,687 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 12:54:21,688 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 12:54:21,689 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (<= 15 ~a8~0)) (.cse9 (<= ~a16~0 4)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a20~0 1)) (.cse6 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse1 .cse5 .cse6) (and .cse7 .cse8 .cse1 .cse6) (and .cse3 .cse4 .cse8 .cse2) (and .cse0 .cse1 .cse5 .cse6) (and .cse9 .cse8 .cse2) (and .cse7 .cse9 .cse8 .cse6) (and .cse7 .cse4 .cse8) (and .cse0 .cse6 .cse2) (and .cse0 .cse4))) [2020-11-22 12:54:21,689 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 12:54:21,690 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 12:54:21,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:54:21 BoogieIcfgContainer [2020-11-22 12:54:21,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:54:21,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:54:21,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:54:21,751 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:54:21,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:08" (3/4) ... [2020-11-22 12:54:21,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:54:21,780 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 12:54:21,782 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:54:21,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 12:54:21,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:54:21,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f5ee5985-fad2-4a6a-8b79-554ece3a0344/bin/utaipan/witness.graphml [2020-11-22 12:54:21,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:54:21,974 INFO L168 Benchmark]: Toolchain (without parser) took 16409.35 ms. Allocated memory was 113.2 MB in the beginning and 343.9 MB in the end (delta: 230.7 MB). Free memory was 83.4 MB in the beginning and 227.0 MB in the end (delta: -143.6 MB). Peak memory consumption was 87.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:21,975 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:21,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.44 ms. Allocated memory is still 113.2 MB. Free memory was 83.0 MB in the beginning and 73.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:21,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.25 ms. Allocated memory is still 113.2 MB. Free memory was 73.6 MB in the beginning and 68.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:21,977 INFO L168 Benchmark]: Boogie Preprocessor took 88.34 ms. Allocated memory is still 113.2 MB. Free memory was 68.2 MB in the beginning and 63.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:21,977 INFO L168 Benchmark]: RCFGBuilder took 2503.10 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 63.6 MB in the beginning and 63.4 MB in the end (delta: 196.1 kB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:21,978 INFO L168 Benchmark]: TraceAbstraction took 12819.61 ms. Allocated memory was 140.5 MB in the beginning and 343.9 MB in the end (delta: 203.4 MB). Free memory was 62.3 MB in the beginning and 242.7 MB in the end (delta: -180.4 MB). Peak memory consumption was 158.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:21,978 INFO L168 Benchmark]: Witness Printer took 221.93 ms. Allocated memory is still 343.9 MB. Free memory was 242.7 MB in the beginning and 227.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:21,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 665.44 ms. Allocated memory is still 113.2 MB. Free memory was 83.0 MB in the beginning and 73.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.25 ms. Allocated memory is still 113.2 MB. Free memory was 73.6 MB in the beginning and 68.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.34 ms. Allocated memory is still 113.2 MB. Free memory was 68.2 MB in the beginning and 63.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2503.10 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 63.6 MB in the beginning and 63.4 MB in the end (delta: 196.1 kB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12819.61 ms. Allocated memory was 140.5 MB in the beginning and 343.9 MB in the end (delta: 203.4 MB). Free memory was 62.3 MB in the beginning and 242.7 MB in the end (delta: -180.4 MB). Peak memory consumption was 158.3 MB. Max. memory is 16.1 GB. * Witness Printer took 221.93 ms. Allocated memory is still 343.9 MB. Free memory was 242.7 MB in the beginning and 227.0 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 && !(a7 == 1)) && a8 <= 13) || ((a16 == 6 && a17 <= 0) && 15 <= a8)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a16 <= 5 && !(a7 == 1)) && a8 <= 13) || ((a16 == 6 && a17 <= 0) && 15 <= a8)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.0s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 615 SDtfs, 925 SDslu, 61 SDs, 0 SdLazy, 2947 SolverSat, 719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1068 GetRequests, 1042 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 710 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 255 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1960 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2554 NumberOfCodeBlocks, 2554 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3053 ConstructedInterpolants, 0 QuantifiedInterpolants, 1955779 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1130 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 3985/4173 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...