./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label32.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_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label32.c -s /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/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 0dafa86a35a01d21ef711a2bd4643c2982066a13 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:05:38,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:05:38,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:05:38,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:05:38,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:05:38,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:05:38,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:05:38,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:05:38,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:05:38,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:05:38,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:05:38,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:05:38,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:05:38,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:05:38,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:05:38,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:05:38,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:05:38,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:05:38,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:05:38,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:05:38,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:05:38,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:05:38,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:05:38,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:05:38,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:05:38,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:05:38,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:05:38,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:05:38,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:05:38,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:05:38,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:05:38,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:05:38,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:05:38,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:05:38,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:05:38,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:05:38,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:05:38,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:05:38,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:05:38,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:05:38,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:05:38,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:05:38,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:05:38,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:05:38,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:05:38,364 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:05:38,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:05:38,364 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:05:38,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:05:38,364 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:05:38,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:05:38,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:05:38,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:05:38,365 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:05:38,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:05:38,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:05:38,365 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:05:38,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:05:38,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:05:38,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:05:38,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:05:38,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:05:38,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:05:38,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:05:38,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:05:38,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:05:38,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:05:38,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:05:38,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:05:38,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:05:38,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:05:38,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:05:38,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:05:38,369 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_708a7cb1-0774-4c11-89d9-b86fb1c87999/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dafa86a35a01d21ef711a2bd4643c2982066a13 [2020-12-09 11:05:38,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:05:38,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:05:38,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:05:38,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:05:38,556 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:05:38,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label32.c [2020-12-09 11:05:38,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/data/3c79b5953/3884821601bd4afe977e69f71f1cbbf9/FLAG187700f6c [2020-12-09 11:05:39,093 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:05:39,094 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/sv-benchmarks/c/eca-rers2012/Problem02_label32.c [2020-12-09 11:05:39,104 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/data/3c79b5953/3884821601bd4afe977e69f71f1cbbf9/FLAG187700f6c [2020-12-09 11:05:39,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/data/3c79b5953/3884821601bd4afe977e69f71f1cbbf9 [2020-12-09 11:05:39,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:05:39,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:05:39,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:05:39,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:05:39,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:05:39,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65eb9708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39, skipping insertion in model container [2020-12-09 11:05:39,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:05:39,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:05:39,381 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_708a7cb1-0774-4c11-89d9-b86fb1c87999/sv-benchmarks/c/eca-rers2012/Problem02_label32.c[17811,17824] [2020-12-09 11:05:39,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:05:39,410 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:05:39,486 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_708a7cb1-0774-4c11-89d9-b86fb1c87999/sv-benchmarks/c/eca-rers2012/Problem02_label32.c[17811,17824] [2020-12-09 11:05:39,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:05:39,505 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:05:39,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39 WrapperNode [2020-12-09 11:05:39,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:05:39,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:05:39,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:05:39,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:05:39,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:05:39,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:05:39,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:05:39,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:05:39,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... [2020-12-09 11:05:39,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:05:39,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:05:39,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:05:39,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:05:39,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/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 11:05:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:05:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:05:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:05:39,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:05:40,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:05:40,889 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 11:05:40,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:05:40 BoogieIcfgContainer [2020-12-09 11:05:40,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:05:40,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:05:40,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:05:40,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:05:40,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:05:39" (1/3) ... [2020-12-09 11:05:40,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193a0535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:05:40, skipping insertion in model container [2020-12-09 11:05:40,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:05:39" (2/3) ... [2020-12-09 11:05:40,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193a0535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:05:40, skipping insertion in model container [2020-12-09 11:05:40,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:05:40" (3/3) ... [2020-12-09 11:05:40,897 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label32.c [2020-12-09 11:05:40,907 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:05:40,910 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:05:40,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 11:05:40,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:05:40,937 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:05:40,937 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:05:40,937 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:05:40,937 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:05:40,937 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:05:40,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:05:40,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:05:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 11:05:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 11:05:40,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:05:40,957 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 11:05:40,957 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:05:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:05:40,962 INFO L82 PathProgramCache]: Analyzing trace with hash 925955599, now seen corresponding path program 1 times [2020-12-09 11:05:40,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:05:40,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080032706] [2020-12-09 11:05:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:05:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:41,205 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 11:05:41,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080032706] [2020-12-09 11:05:41,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:05:41,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:05:41,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149020622] [2020-12-09 11:05:41,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:05:41,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:05:41,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:05:41,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:05:41,223 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 11:05:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:05:41,583 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 11:05:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:05:41,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 11:05:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:05:41,594 INFO L225 Difference]: With dead ends: 251 [2020-12-09 11:05:41,594 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 11:05:41,596 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 11:05:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 11:05:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 11:05:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 11:05:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-12-09 11:05:41,633 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-12-09 11:05:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:05:41,634 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-12-09 11:05:41,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:05:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-12-09 11:05:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 11:05:41,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:05:41,638 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:05:41,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:05:41,639 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:05:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:05:41,640 INFO L82 PathProgramCache]: Analyzing trace with hash 221756078, now seen corresponding path program 1 times [2020-12-09 11:05:41,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:05:41,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438643831] [2020-12-09 11:05:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:05:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:41,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:05:41,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438643831] [2020-12-09 11:05:41,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:05:41,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:05:41,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772272005] [2020-12-09 11:05:41,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:05:41,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:05:41,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:05:41,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:05:41,725 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-12-09 11:05:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:05:42,012 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-12-09 11:05:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:05:42,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 11:05:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:05:42,015 INFO L225 Difference]: With dead ends: 485 [2020-12-09 11:05:42,015 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 11:05:42,017 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 11:05:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 11:05:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 11:05:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 11:05:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2020-12-09 11:05:42,035 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 98 [2020-12-09 11:05:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:05:42,036 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2020-12-09 11:05:42,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:05:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2020-12-09 11:05:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 11:05:42,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:05:42,040 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:05:42,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:05:42,040 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:05:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:05:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1583667246, now seen corresponding path program 1 times [2020-12-09 11:05:42,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:05:42,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431627868] [2020-12-09 11:05:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:05:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:05:42,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431627868] [2020-12-09 11:05:42,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:05:42,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:05:42,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062334685] [2020-12-09 11:05:42,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:05:42,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:05:42,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:05:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:05:42,100 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand 3 states. [2020-12-09 11:05:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:05:42,239 INFO L93 Difference]: Finished difference Result 645 states and 945 transitions. [2020-12-09 11:05:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:05:42,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 11:05:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:05:42,242 INFO L225 Difference]: With dead ends: 645 [2020-12-09 11:05:42,242 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 11:05:42,243 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 11:05:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 11:05:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 11:05:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 11:05:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 433 transitions. [2020-12-09 11:05:42,255 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 433 transitions. Word has length 99 [2020-12-09 11:05:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:05:42,256 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 433 transitions. [2020-12-09 11:05:42,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:05:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 433 transitions. [2020-12-09 11:05:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 11:05:42,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:05:42,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:05:42,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 11:05:42,257 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:05:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:05:42,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2134427065, now seen corresponding path program 1 times [2020-12-09 11:05:42,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:05:42,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922336464] [2020-12-09 11:05:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:05:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:05:42,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922336464] [2020-12-09 11:05:42,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:05:42,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:05:42,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230470575] [2020-12-09 11:05:42,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:05:42,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:05:42,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:05:42,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:05:42,324 INFO L87 Difference]: Start difference. First operand 323 states and 433 transitions. Second operand 3 states. [2020-12-09 11:05:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:05:42,537 INFO L93 Difference]: Finished difference Result 725 states and 980 transitions. [2020-12-09 11:05:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:05:42,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 11:05:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:05:42,539 INFO L225 Difference]: With dead ends: 725 [2020-12-09 11:05:42,540 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 11:05:42,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:05:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 11:05:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 11:05:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 11:05:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2020-12-09 11:05:42,551 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 103 [2020-12-09 11:05:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:05:42,551 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2020-12-09 11:05:42,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:05:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2020-12-09 11:05:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 11:05:42,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:05:42,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:05:42,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 11:05:42,560 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:05:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:05:42,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2118169583, now seen corresponding path program 1 times [2020-12-09 11:05:42,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:05:42,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580194977] [2020-12-09 11:05:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:05:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:05:42,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580194977] [2020-12-09 11:05:42,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254015045] [2020-12-09 11:05:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/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 11:05:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:42,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 11:05:42,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:05:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 11:05:42,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:05:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 11:05:43,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:05:43,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-12-09 11:05:43,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82087666] [2020-12-09 11:05:43,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:05:43,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:05:43,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:05:43,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:05:43,004 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand 4 states. [2020-12-09 11:05:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:05:43,430 INFO L93 Difference]: Finished difference Result 1125 states and 1527 transitions. [2020-12-09 11:05:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:05:43,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-09 11:05:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:05:43,433 INFO L225 Difference]: With dead ends: 1125 [2020-12-09 11:05:43,433 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 11:05:43,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:05:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 11:05:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 11:05:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 11:05:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 752 transitions. [2020-12-09 11:05:43,445 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 752 transitions. Word has length 107 [2020-12-09 11:05:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:05:43,446 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 752 transitions. [2020-12-09 11:05:43,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:05:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 752 transitions. [2020-12-09 11:05:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-09 11:05:43,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:05:43,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 11:05:43,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:05:43,650 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:05:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:05:43,651 INFO L82 PathProgramCache]: Analyzing trace with hash 409289232, now seen corresponding path program 1 times [2020-12-09 11:05:43,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:05:43,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213273889] [2020-12-09 11:05:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:05:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 11:05:43,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213273889] [2020-12-09 11:05:43,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47718870] [2020-12-09 11:05:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/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 11:05:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:05:43,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 11:05:43,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:05:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 11:05:44,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:05:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 11:05:44,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:05:44,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2020-12-09 11:05:44,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496932171] [2020-12-09 11:05:44,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:05:44,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:05:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:05:44,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:05:44,109 INFO L87 Difference]: Start difference. First operand 643 states and 752 transitions. Second operand 3 states. [2020-12-09 11:05:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:05:44,312 INFO L93 Difference]: Finished difference Result 883 states and 1027 transitions. [2020-12-09 11:05:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:05:44,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-09 11:05:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:05:44,313 INFO L225 Difference]: With dead ends: 883 [2020-12-09 11:05:44,313 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:05:44,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:05:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:05:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:05:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:05:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:05:44,315 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2020-12-09 11:05:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:05:44,315 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:05:44,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:05:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:05:44,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:05:44,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:05:44,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 11:05:44,631 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L508-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 11:05:44,632 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 11:05:44,633 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 509) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 11:05:44,634 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 (<= ~a28~0 7) .cse1) (and .cse2 .cse1 .cse3) (and .cse0 .cse2 .cse1) (and .cse1 .cse3 (< 8 ~a28~0)))) [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 11:05:44,635 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 (<= ~a28~0 7) .cse1) (and .cse2 .cse1 .cse3) (and .cse0 .cse2 .cse1) (and .cse1 .cse3 (< 8 ~a28~0)))) [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 11:05:44,636 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 11:05:44,637 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 11:05:44,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:05:44 BoogieIcfgContainer [2020-12-09 11:05:44,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:05:44,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:05:44,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:05:44,650 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:05:44,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:05:40" (3/4) ... [2020-12-09 11:05:44,653 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 11:05:44,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 11:05:44,670 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 11:05:44,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 11:05:44,673 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 11:05:44,789 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_708a7cb1-0774-4c11-89d9-b86fb1c87999/bin/utaipan/witness.graphml [2020-12-09 11:05:44,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:05:44,790 INFO L168 Benchmark]: Toolchain (without parser) took 5667.52 ms. Allocated memory was 102.8 MB in the beginning and 226.5 MB in the end (delta: 123.7 MB). Free memory was 72.7 MB in the beginning and 184.5 MB in the end (delta: -111.8 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. [2020-12-09 11:05:44,790 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 102.8 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:05:44,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.70 ms. Allocated memory is still 102.8 MB. Free memory was 72.6 MB in the beginning and 77.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2020-12-09 11:05:44,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.02 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 72.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:05:44,791 INFO L168 Benchmark]: Boogie Preprocessor took 57.02 ms. Allocated memory is still 102.8 MB. Free memory was 72.2 MB in the beginning and 67.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 11:05:44,791 INFO L168 Benchmark]: RCFGBuilder took 1271.95 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 67.4 MB in the beginning and 62.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 16.1 GB. [2020-12-09 11:05:44,792 INFO L168 Benchmark]: TraceAbstraction took 3757.77 ms. Allocated memory was 130.0 MB in the beginning and 188.7 MB in the end (delta: 58.7 MB). Free memory was 62.4 MB in the beginning and 88.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-12-09 11:05:44,792 INFO L168 Benchmark]: Witness Printer took 138.85 ms. Allocated memory was 188.7 MB in the beginning and 226.5 MB in the end (delta: 37.7 MB). Free memory was 88.2 MB in the beginning and 184.5 MB in the end (delta: -96.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:05:44,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 102.8 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.70 ms. Allocated memory is still 102.8 MB. Free memory was 72.6 MB in the beginning and 77.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.02 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 72.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.02 ms. Allocated memory is still 102.8 MB. Free memory was 72.2 MB in the beginning and 67.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1271.95 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 67.4 MB in the beginning and 62.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3757.77 ms. Allocated memory was 130.0 MB in the beginning and 188.7 MB in the end (delta: 58.7 MB). Free memory was 62.4 MB in the beginning and 88.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 138.85 ms. Allocated memory was 188.7 MB in the beginning and 226.5 MB in the end (delta: 37.7 MB). Free memory was 88.2 MB in the beginning and 184.5 MB in the end (delta: -96.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 509]: 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 && a28 <= 7) && a17 <= 8) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((a17 <= 8 && a28 <= 10) && 8 < a28) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a19 == 1 && a28 <= 7) && a17 <= 8) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((a17 <= 8 && a28 <= 10) && 8 < a28) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 247 SDtfs, 349 SDslu, 26 SDs, 0 SdLazy, 1427 SolverSat, 376 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 483 GetRequests, 469 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 29 NumberOfFragments, 83 HoareAnnotationTreeSize, 3 FomulaSimplifications, 194 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 850 NumberOfCodeBlocks, 850 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1075 ConstructedInterpolants, 0 QuantifiedInterpolants, 470255 SizeOfPredicates, 0 NumberOfNonLiveVariables, 591 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 373/397 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...