./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label33.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/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 1dec9e8fbdb4ba5e360b4daec42a611536a5a5ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:08:32,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:08:32,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:08:32,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:08:32,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:08:32,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:08:32,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:08:32,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:08:32,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:08:32,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:08:32,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:08:32,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:08:32,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:08:32,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:08:32,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:08:32,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:08:32,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:08:32,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:08:32,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:08:32,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:08:32,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:08:32,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:08:32,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:08:32,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:08:32,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:08:32,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:08:32,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:08:32,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:08:32,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:08:32,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:08:32,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:08:32,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:08:32,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:08:32,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:08:32,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:08:32,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:08:32,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:08:32,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:08:32,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:08:32,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:08:32,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:08:32,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:08:32,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:08:32,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:08:32,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:08:32,299 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:08:32,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:08:32,299 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:08:32,299 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:08:32,299 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:08:32,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:08:32,299 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:08:32,299 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:08:32,300 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:08:32,300 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:08:32,300 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:08:32,300 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:08:32,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:08:32,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:08:32,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:08:32,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:08:32,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:08:32,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:08:32,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:08:32,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:08:32,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:08:32,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:08:32,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:08:32,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:08:32,303 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:08:32,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:08:32,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:08:32,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:08:32,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:08:32,304 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_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dec9e8fbdb4ba5e360b4daec42a611536a5a5ce [2020-12-09 10:08:32,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:08:32,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:08:32,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:08:32,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:08:32,525 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:08:32,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label33.c [2020-12-09 10:08:32,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/data/ee013c004/c574ff3cc01d41908f0aa5ca01bd616a/FLAGa3d281e44 [2020-12-09 10:08:32,984 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:08:32,985 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/sv-benchmarks/c/eca-rers2012/Problem02_label33.c [2020-12-09 10:08:32,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/data/ee013c004/c574ff3cc01d41908f0aa5ca01bd616a/FLAGa3d281e44 [2020-12-09 10:08:33,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/data/ee013c004/c574ff3cc01d41908f0aa5ca01bd616a [2020-12-09 10:08:33,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:08:33,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:08:33,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:08:33,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:08:33,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:08:33,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae1d4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33, skipping insertion in model container [2020-12-09 10:08:33,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:08:33,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:08:33,261 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/sv-benchmarks/c/eca-rers2012/Problem02_label33.c[21447,21460] [2020-12-09 10:08:33,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:08:33,278 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:08:33,336 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/sv-benchmarks/c/eca-rers2012/Problem02_label33.c[21447,21460] [2020-12-09 10:08:33,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:08:33,350 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:08:33,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33 WrapperNode [2020-12-09 10:08:33,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:08:33,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:08:33,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:08:33,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:08:33,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:08:33,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:08:33,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:08:33,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:08:33,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... [2020-12-09 10:08:33,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:08:33,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:08:33,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:08:33,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:08:33,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:08:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:08:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:08:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:08:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:08:34,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:08:34,904 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 10:08:34,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:08:34 BoogieIcfgContainer [2020-12-09 10:08:34,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:08:34,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:08:34,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:08:34,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:08:34,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:08:33" (1/3) ... [2020-12-09 10:08:34,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b46d82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:08:34, skipping insertion in model container [2020-12-09 10:08:34,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:33" (2/3) ... [2020-12-09 10:08:34,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b46d82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:08:34, skipping insertion in model container [2020-12-09 10:08:34,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:08:34" (3/3) ... [2020-12-09 10:08:34,914 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2020-12-09 10:08:34,927 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:08:34,930 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:08:34,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:08:34,956 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:08:34,957 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:08:34,957 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:08:34,957 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:08:34,957 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:08:34,957 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:08:34,957 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:08:34,957 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:08:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 10:08:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 10:08:34,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:34,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:34,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:34,977 INFO L82 PathProgramCache]: Analyzing trace with hash 925963791, now seen corresponding path program 1 times [2020-12-09 10:08:34,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:34,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234504168] [2020-12-09 10:08:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:08:35,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234504168] [2020-12-09 10:08:35,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:35,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:08:35,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10341753] [2020-12-09 10:08:35,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:35,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:35,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:35,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:35,306 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 10:08:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:35,603 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 10:08:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:35,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 10:08:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:35,615 INFO L225 Difference]: With dead ends: 251 [2020-12-09 10:08:35,615 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 10:08:35,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 10:08:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 10:08:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 10:08:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 10:08:35,662 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 10:08:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:35,662 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 10:08:35,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:35,663 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 10:08:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 10:08:35,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:35,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:35,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:08:35,667 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1028684548, now seen corresponding path program 1 times [2020-12-09 10:08:35,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:35,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194141930] [2020-12-09 10:08:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:08:35,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194141930] [2020-12-09 10:08:35,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:35,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:08:35,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314130839] [2020-12-09 10:08:35,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:35,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:35,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:35,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:35,737 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 10:08:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:36,047 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 10:08:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:36,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 10:08:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:36,051 INFO L225 Difference]: With dead ends: 485 [2020-12-09 10:08:36,051 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 10:08:36,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 10:08:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 10:08:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 10:08:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-12-09 10:08:36,072 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-12-09 10:08:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:36,072 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-12-09 10:08:36,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-12-09 10:08:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 10:08:36,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:36,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:36,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:08:36,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:36,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2137934429, now seen corresponding path program 1 times [2020-12-09 10:08:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:36,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345154257] [2020-12-09 10:08:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:08:36,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345154257] [2020-12-09 10:08:36,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917610148] [2020-12-09 10:08:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:36,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:08:36,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:08:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 10:08:36,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:08:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 10:08:36,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:08:36,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 10:08:36,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908339078] [2020-12-09 10:08:36,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:36,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:36,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:08:36,403 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-12-09 10:08:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:36,698 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-12-09 10:08:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:36,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 10:08:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:36,701 INFO L225 Difference]: With dead ends: 565 [2020-12-09 10:08:36,701 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 10:08:36,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:08:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 10:08:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-12-09 10:08:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 10:08:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-12-09 10:08:36,717 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-12-09 10:08:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:36,717 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-12-09 10:08:36,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-12-09 10:08:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 10:08:36,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:36,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:36,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 10:08:36,919 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:36,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1427733417, now seen corresponding path program 1 times [2020-12-09 10:08:36,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:36,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123119603] [2020-12-09 10:08:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:08:36,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123119603] [2020-12-09 10:08:36,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:36,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:08:36,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852670330] [2020-12-09 10:08:36,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:36,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:36,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:36,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:36,956 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-12-09 10:08:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:37,111 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-12-09 10:08:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:37,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 10:08:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:37,114 INFO L225 Difference]: With dead ends: 805 [2020-12-09 10:08:37,114 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 10:08:37,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:37,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 10:08:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 10:08:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 10:08:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-12-09 10:08:37,130 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-12-09 10:08:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:37,130 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-12-09 10:08:37,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-12-09 10:08:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 10:08:37,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:37,132 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:37,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:08:37,132 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash -440290469, now seen corresponding path program 1 times [2020-12-09 10:08:37,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:37,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765436283] [2020-12-09 10:08:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 10:08:37,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765436283] [2020-12-09 10:08:37,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:37,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:08:37,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479050983] [2020-12-09 10:08:37,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:37,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:37,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:37,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:37,189 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-12-09 10:08:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:37,427 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-12-09 10:08:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:37,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 10:08:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:37,431 INFO L225 Difference]: With dead ends: 885 [2020-12-09 10:08:37,431 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 10:08:37,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 10:08:37,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-12-09 10:08:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-12-09 10:08:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-12-09 10:08:37,447 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-12-09 10:08:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:37,447 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-12-09 10:08:37,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-12-09 10:08:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-09 10:08:37,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:37,449 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:37,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:08:37,450 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:37,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:37,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1423409169, now seen corresponding path program 1 times [2020-12-09 10:08:37,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:37,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209727125] [2020-12-09 10:08:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-09 10:08:37,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209727125] [2020-12-09 10:08:37,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116005815] [2020-12-09 10:08:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:37,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:08:37,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:08:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 10:08:37,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:08:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 10:08:37,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:08:37,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 10:08:37,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776497865] [2020-12-09 10:08:37,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:37,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:37,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:37,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:08:37,728 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-12-09 10:08:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:38,025 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2020-12-09 10:08:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:38,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-09 10:08:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:38,030 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 10:08:38,030 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 10:08:38,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:08:38,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 10:08:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-12-09 10:08:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 10:08:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2020-12-09 10:08:38,055 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2020-12-09 10:08:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:38,055 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2020-12-09 10:08:38,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:38,056 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2020-12-09 10:08:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-09 10:08:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:38,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:38,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:38,259 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:38,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1142795511, now seen corresponding path program 1 times [2020-12-09 10:08:38,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:38,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658856197] [2020-12-09 10:08:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-09 10:08:38,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658856197] [2020-12-09 10:08:38,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:38,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:08:38,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603280214] [2020-12-09 10:08:38,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:08:38,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:08:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:08:38,350 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 5 states. [2020-12-09 10:08:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:38,820 INFO L93 Difference]: Finished difference Result 1961 states and 2591 transitions. [2020-12-09 10:08:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:08:38,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-09 10:08:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:38,824 INFO L225 Difference]: With dead ends: 1961 [2020-12-09 10:08:38,824 INFO L226 Difference]: Without dead ends: 993 [2020-12-09 10:08:38,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:08:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-12-09 10:08:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 883. [2020-12-09 10:08:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 10:08:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1099 transitions. [2020-12-09 10:08:38,841 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1099 transitions. Word has length 135 [2020-12-09 10:08:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:38,841 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1099 transitions. [2020-12-09 10:08:38,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:08:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1099 transitions. [2020-12-09 10:08:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-09 10:08:38,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:38,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:38,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 10:08:38,843 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:38,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2089860307, now seen corresponding path program 1 times [2020-12-09 10:08:38,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:38,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815891364] [2020-12-09 10:08:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-09 10:08:38,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815891364] [2020-12-09 10:08:38,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751674299] [2020-12-09 10:08:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:38,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:08:38,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:08:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 10:08:39,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:08:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 10:08:39,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:08:39,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-12-09 10:08:39,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586649138] [2020-12-09 10:08:39,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:08:39,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:39,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:08:39,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:08:39,148 INFO L87 Difference]: Start difference. First operand 883 states and 1099 transitions. Second operand 4 states. [2020-12-09 10:08:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:39,469 INFO L93 Difference]: Finished difference Result 2005 states and 2562 transitions. [2020-12-09 10:08:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:08:39,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-12-09 10:08:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:39,473 INFO L225 Difference]: With dead ends: 2005 [2020-12-09 10:08:39,473 INFO L226 Difference]: Without dead ends: 1203 [2020-12-09 10:08:39,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:08:39,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-12-09 10:08:39,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1123. [2020-12-09 10:08:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 10:08:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1350 transitions. [2020-12-09 10:08:39,490 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1350 transitions. Word has length 139 [2020-12-09 10:08:39,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:39,490 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1350 transitions. [2020-12-09 10:08:39,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:08:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1350 transitions. [2020-12-09 10:08:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-09 10:08:39,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:39,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:39,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:39,694 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1296447548, now seen corresponding path program 1 times [2020-12-09 10:08:39,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:39,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117483338] [2020-12-09 10:08:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:08:39,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117483338] [2020-12-09 10:08:39,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657538880] [2020-12-09 10:08:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:39,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:08:39,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:08:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 10:08:40,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:08:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 10:08:40,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:08:40,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 10:08:40,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985263663] [2020-12-09 10:08:40,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:40,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:40,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:40,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:08:40,157 INFO L87 Difference]: Start difference. First operand 1123 states and 1350 transitions. Second operand 3 states. [2020-12-09 10:08:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:40,363 INFO L93 Difference]: Finished difference Result 2643 states and 3124 transitions. [2020-12-09 10:08:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:40,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-12-09 10:08:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:40,364 INFO L225 Difference]: With dead ends: 2643 [2020-12-09 10:08:40,364 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:08:40,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:08:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:08:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:08:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:08:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:08:40,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-12-09 10:08:40,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:40,366 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:08:40,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:08:40,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:08:40,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:40,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 10:08:40,803 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 10:08:40,804 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 605) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 10:08:40,805 INFO L262 CegarLoopResult]: For program point L604-1(lines 604 606) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L605(line 605) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse5 (= ~a25~0 0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 7))) (or (and .cse0 (= ~a21~0 1) .cse1 .cse2) (and .cse3 .cse1 .cse2) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4) (and .cse0 .cse3 .cse5 .cse2) (and .cse5 .cse2 (< ~a28~0 9)) (and (= ~a11~0 1) .cse2) (and .cse1 .cse2 .cse4))) [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 10:08:40,806 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse5 (= ~a25~0 0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 7))) (or (and .cse0 (= ~a21~0 1) .cse1 .cse2) (and .cse3 .cse1 .cse2) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4) (and .cse0 .cse3 .cse5 .cse2) (and .cse5 .cse2 (< ~a28~0 9)) (and (= ~a11~0 1) .cse2) (and .cse1 .cse2 .cse4))) [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 10:08:40,807 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 10:08:40,808 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 10:08:40,808 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 10:08:40,808 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 10:08:40,808 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 10:08:40,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:08:40 BoogieIcfgContainer [2020-12-09 10:08:40,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:08:40,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:08:40,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:08:40,822 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:08:40,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:08:34" (3/4) ... [2020-12-09 10:08:40,824 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:08:40,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 10:08:40,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 10:08:40,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 10:08:40,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 10:08:40,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_48e9a279-29fc-4337-aa11-de4b0eb6ccaf/bin/utaipan/witness.graphml [2020-12-09 10:08:40,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:08:40,930 INFO L168 Benchmark]: Toolchain (without parser) took 7918.48 ms. Allocated memory was 92.3 MB in the beginning and 283.1 MB in the end (delta: 190.8 MB). Free memory was 50.3 MB in the beginning and 154.7 MB in the end (delta: -104.4 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:40,930 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:08:40,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.92 ms. Allocated memory is still 92.3 MB. Free memory was 50.0 MB in the beginning and 45.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:40,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.35 ms. Allocated memory is still 92.3 MB. Free memory was 45.9 MB in the beginning and 65.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:40,931 INFO L168 Benchmark]: Boogie Preprocessor took 43.31 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 61.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:40,931 INFO L168 Benchmark]: RCFGBuilder took 1450.54 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 61.3 MB in the beginning and 86.2 MB in the end (delta: -24.9 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:40,931 INFO L168 Benchmark]: TraceAbstraction took 5913.43 ms. Allocated memory was 161.5 MB in the beginning and 283.1 MB in the end (delta: 121.6 MB). Free memory was 86.2 MB in the beginning and 169.4 MB in the end (delta: -83.2 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:40,932 INFO L168 Benchmark]: Witness Printer took 107.50 ms. Allocated memory is still 283.1 MB. Free memory was 169.4 MB in the beginning and 154.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:40,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.92 ms. Allocated memory is still 92.3 MB. Free memory was 50.0 MB in the beginning and 45.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.35 ms. Allocated memory is still 92.3 MB. Free memory was 45.9 MB in the beginning and 65.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.31 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 61.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1450.54 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 61.3 MB in the beginning and 86.2 MB in the end (delta: -24.9 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5913.43 ms. Allocated memory was 161.5 MB in the beginning and 283.1 MB in the end (delta: 121.6 MB). Free memory was 86.2 MB in the beginning and 169.4 MB in the end (delta: -83.2 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * Witness Printer took 107.50 ms. Allocated memory is still 283.1 MB. Free memory was 169.4 MB in the beginning and 154.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 605]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || ((10 <= a28 && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (((a19 == 1 && 10 <= a28) && a25 == 0) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a11 == 1 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || ((10 <= a28 && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (((a19 == 1 && 10 <= a28) && a25 == 0) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a11 == 1 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 841 SDslu, 73 SDs, 0 SdLazy, 2220 SolverSat, 670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1098 GetRequests, 1072 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 350 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 155 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1986 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1579 NumberOfCodeBlocks, 1579 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2101 ConstructedInterpolants, 0 QuantifiedInterpolants, 831203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1415 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1033/1105 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...