./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.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_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/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 98618c76bfa0eca070eb71a2130d02b24ef80e44 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:13:36,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:13:36,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:13:36,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:13:36,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:13:36,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:13:36,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:13:36,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:13:36,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:13:36,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:13:36,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:13:36,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:13:36,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:13:36,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:13:36,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:13:36,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:13:36,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:13:36,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:13:36,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:13:36,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:13:36,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:13:36,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:13:36,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:13:36,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:13:36,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:13:36,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:13:36,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:13:36,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:13:36,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:13:36,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:13:36,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:13:36,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:13:36,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:13:36,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:13:36,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:13:36,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:13:36,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:13:36,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:13:36,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:13:36,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:13:36,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:13:36,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:13:36,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:13:36,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:13:36,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:13:36,497 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:13:36,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:13:36,497 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:13:36,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:13:36,497 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:13:36,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:13:36,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:13:36,498 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:13:36,498 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:13:36,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:13:36,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:13:36,498 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:13:36,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:13:36,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:13:36,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:13:36,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:13:36,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:13:36,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:13:36,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:13:36,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:13:36,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:13:36,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:13:36,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:13:36,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:13:36,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:13:36,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:13:36,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:13:36,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:13:36,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:13:36,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:13:36,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:13:36,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:13:36,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:13:36,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:13:36,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:13:36,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:13:36,501 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_5046163e-6306-4831-bacc-56503d6c9860/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98618c76bfa0eca070eb71a2130d02b24ef80e44 [2020-12-09 08:13:36,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:13:36,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:13:36,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:13:36,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:13:36,697 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:13:36,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2020-12-09 08:13:36,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/data/05b49f674/72076aa1d48d47d0b48e1e1589cd1431/FLAGb1798010c [2020-12-09 08:13:37,202 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:13:37,202 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2020-12-09 08:13:37,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/data/05b49f674/72076aa1d48d47d0b48e1e1589cd1431/FLAGb1798010c [2020-12-09 08:13:37,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/data/05b49f674/72076aa1d48d47d0b48e1e1589cd1431 [2020-12-09 08:13:37,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:13:37,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:13:37,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:13:37,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:13:37,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:13:37,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:13:37" (1/1) ... [2020-12-09 08:13:37,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efc9903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:37, skipping insertion in model container [2020-12-09 08:13:37,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:13:37" (1/1) ... [2020-12-09 08:13:37,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:13:37,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:13:38,108 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_5046163e-6306-4831-bacc-56503d6c9860/sv-benchmarks/c/eca-rers2012/Problem03_label29.c[58258,58271] [2020-12-09 08:13:38,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:13:38,145 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:13:38,295 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_5046163e-6306-4831-bacc-56503d6c9860/sv-benchmarks/c/eca-rers2012/Problem03_label29.c[58258,58271] [2020-12-09 08:13:38,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:13:38,318 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:13:38,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38 WrapperNode [2020-12-09 08:13:38,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:13:38,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:13:38,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:13:38,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:13:38,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:13:38,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:13:38,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:13:38,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:13:38,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... [2020-12-09 08:13:38,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:13:38,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:13:38,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:13:38,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:13:38,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/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 08:13:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:13:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:13:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:13:38,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:13:40,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:13:40,698 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 08:13:40,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:13:40 BoogieIcfgContainer [2020-12-09 08:13:40,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:13:40,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:13:40,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:13:40,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:13:40,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:13:37" (1/3) ... [2020-12-09 08:13:40,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cffa5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:13:40, skipping insertion in model container [2020-12-09 08:13:40,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:13:38" (2/3) ... [2020-12-09 08:13:40,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cffa5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:13:40, skipping insertion in model container [2020-12-09 08:13:40,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:13:40" (3/3) ... [2020-12-09 08:13:40,707 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2020-12-09 08:13:40,718 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:13:40,720 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:13:40,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:13:40,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:13:40,745 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:13:40,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:13:40,745 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:13:40,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:13:40,745 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:13:40,745 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:13:40,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:13:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-12-09 08:13:40,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-09 08:13:40,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:40,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:40,767 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:40,771 INFO L82 PathProgramCache]: Analyzing trace with hash 466756442, now seen corresponding path program 1 times [2020-12-09 08:13:40,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:40,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828589445] [2020-12-09 08:13:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:41,129 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 08:13:41,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828589445] [2020-12-09 08:13:41,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:41,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:13:41,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769084409] [2020-12-09 08:13:41,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:41,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:41,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:41,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:41,145 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-12-09 08:13:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:41,765 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2020-12-09 08:13:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:41,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-09 08:13:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:41,776 INFO L225 Difference]: With dead ends: 440 [2020-12-09 08:13:41,776 INFO L226 Difference]: Without dead ends: 289 [2020-12-09 08:13:41,779 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 08:13:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-09 08:13:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-12-09 08:13:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-12-09 08:13:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 550 transitions. [2020-12-09 08:13:41,820 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 550 transitions. Word has length 143 [2020-12-09 08:13:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:41,821 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 550 transitions. [2020-12-09 08:13:41,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 550 transitions. [2020-12-09 08:13:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 08:13:41,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:41,826 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:41,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:13:41,826 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash 865042910, now seen corresponding path program 1 times [2020-12-09 08:13:41,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:41,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947942879] [2020-12-09 08:13:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:13:41,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947942879] [2020-12-09 08:13:41,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:41,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:13:41,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12664920] [2020-12-09 08:13:41,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:41,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:41,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:41,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:41,915 INFO L87 Difference]: Start difference. First operand 289 states and 550 transitions. Second operand 3 states. [2020-12-09 08:13:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:42,486 INFO L93 Difference]: Finished difference Result 865 states and 1648 transitions. [2020-12-09 08:13:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:42,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-09 08:13:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:42,491 INFO L225 Difference]: With dead ends: 865 [2020-12-09 08:13:42,491 INFO L226 Difference]: Without dead ends: 577 [2020-12-09 08:13:42,493 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 08:13:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-12-09 08:13:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2020-12-09 08:13:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-12-09 08:13:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1011 transitions. [2020-12-09 08:13:42,533 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1011 transitions. Word has length 148 [2020-12-09 08:13:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:42,533 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1011 transitions. [2020-12-09 08:13:42,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1011 transitions. [2020-12-09 08:13:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-09 08:13:42,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:42,539 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:42,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 08:13:42,539 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1593799929, now seen corresponding path program 1 times [2020-12-09 08:13:42,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:42,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610139453] [2020-12-09 08:13:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:13:42,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610139453] [2020-12-09 08:13:42,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:42,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:13:42,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930658507] [2020-12-09 08:13:42,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:42,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:42,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:42,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:42,609 INFO L87 Difference]: Start difference. First operand 575 states and 1011 transitions. Second operand 3 states. [2020-12-09 08:13:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:43,239 INFO L93 Difference]: Finished difference Result 1721 states and 3030 transitions. [2020-12-09 08:13:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:43,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-09 08:13:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:43,245 INFO L225 Difference]: With dead ends: 1721 [2020-12-09 08:13:43,245 INFO L226 Difference]: Without dead ends: 1147 [2020-12-09 08:13:43,246 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 08:13:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-12-09 08:13:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2020-12-09 08:13:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-12-09 08:13:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1962 transitions. [2020-12-09 08:13:43,270 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1962 transitions. Word has length 151 [2020-12-09 08:13:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:43,270 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1962 transitions. [2020-12-09 08:13:43,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1962 transitions. [2020-12-09 08:13:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-09 08:13:43,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:43,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:43,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 08:13:43,274 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash 309759520, now seen corresponding path program 1 times [2020-12-09 08:13:43,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:43,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017311184] [2020-12-09 08:13:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 08:13:43,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017311184] [2020-12-09 08:13:43,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:43,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:13:43,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609995098] [2020-12-09 08:13:43,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:43,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:43,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:43,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:43,341 INFO L87 Difference]: Start difference. First operand 1147 states and 1962 transitions. Second operand 3 states. [2020-12-09 08:13:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:44,009 INFO L93 Difference]: Finished difference Result 3437 states and 5883 transitions. [2020-12-09 08:13:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:44,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-09 08:13:44,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:44,019 INFO L225 Difference]: With dead ends: 3437 [2020-12-09 08:13:44,019 INFO L226 Difference]: Without dead ends: 2291 [2020-12-09 08:13:44,020 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 08:13:44,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-12-09 08:13:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2020-12-09 08:13:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-09 08:13:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3562 transitions. [2020-12-09 08:13:44,065 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3562 transitions. Word has length 163 [2020-12-09 08:13:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:44,065 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 3562 transitions. [2020-12-09 08:13:44,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3562 transitions. [2020-12-09 08:13:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-09 08:13:44,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:44,070 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:44,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 08:13:44,070 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1528495452, now seen corresponding path program 1 times [2020-12-09 08:13:44,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:44,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315868890] [2020-12-09 08:13:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 08:13:44,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315868890] [2020-12-09 08:13:44,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:44,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:13:44,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17184433] [2020-12-09 08:13:44,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:44,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:44,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:44,157 INFO L87 Difference]: Start difference. First operand 2291 states and 3562 transitions. Second operand 3 states. [2020-12-09 08:13:44,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:44,784 INFO L93 Difference]: Finished difference Result 5725 states and 8865 transitions. [2020-12-09 08:13:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:44,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-12-09 08:13:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:44,798 INFO L225 Difference]: With dead ends: 5725 [2020-12-09 08:13:44,798 INFO L226 Difference]: Without dead ends: 3435 [2020-12-09 08:13:44,800 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 08:13:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2020-12-09 08:13:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2020-12-09 08:13:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-12-09 08:13:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 5290 transitions. [2020-12-09 08:13:44,853 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 5290 transitions. Word has length 184 [2020-12-09 08:13:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:44,853 INFO L481 AbstractCegarLoop]: Abstraction has 3435 states and 5290 transitions. [2020-12-09 08:13:44,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 5290 transitions. [2020-12-09 08:13:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-12-09 08:13:44,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:44,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:44,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 08:13:44,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash 2120178085, now seen corresponding path program 1 times [2020-12-09 08:13:44,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:44,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463255643] [2020-12-09 08:13:44,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 08:13:44,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463255643] [2020-12-09 08:13:44,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500650085] [2020-12-09 08:13:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/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 08:13:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:45,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 08:13:45,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:13:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 08:13:45,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:13:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-09 08:13:45,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 08:13:45,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 08:13:45,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957590673] [2020-12-09 08:13:45,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:45,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:45,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:45,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:13:45,432 INFO L87 Difference]: Start difference. First operand 3435 states and 5290 transitions. Second operand 3 states. [2020-12-09 08:13:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:46,035 INFO L93 Difference]: Finished difference Result 10158 states and 15646 transitions. [2020-12-09 08:13:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:46,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-12-09 08:13:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:46,059 INFO L225 Difference]: With dead ends: 10158 [2020-12-09 08:13:46,059 INFO L226 Difference]: Without dead ends: 6724 [2020-12-09 08:13:46,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 379 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 08:13:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6724 states. [2020-12-09 08:13:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6724 to 6724. [2020-12-09 08:13:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6724 states. [2020-12-09 08:13:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 10212 transitions. [2020-12-09 08:13:46,156 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 10212 transitions. Word has length 191 [2020-12-09 08:13:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:46,157 INFO L481 AbstractCegarLoop]: Abstraction has 6724 states and 10212 transitions. [2020-12-09 08:13:46,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 10212 transitions. [2020-12-09 08:13:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-09 08:13:46,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:46,168 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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 08:13:46,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-09 08:13:46,369 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:46,370 INFO L82 PathProgramCache]: Analyzing trace with hash 851409454, now seen corresponding path program 1 times [2020-12-09 08:13:46,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:46,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119130676] [2020-12-09 08:13:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:13:46,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119130676] [2020-12-09 08:13:46,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:46,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:13:46,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920092441] [2020-12-09 08:13:46,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:46,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:46,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:46,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:46,537 INFO L87 Difference]: Start difference. First operand 6724 states and 10212 transitions. Second operand 3 states. [2020-12-09 08:13:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:47,138 INFO L93 Difference]: Finished difference Result 15735 states and 23935 transitions. [2020-12-09 08:13:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:47,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-12-09 08:13:47,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:47,170 INFO L225 Difference]: With dead ends: 15735 [2020-12-09 08:13:47,170 INFO L226 Difference]: Without dead ends: 9012 [2020-12-09 08:13:47,184 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 08:13:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9012 states. [2020-12-09 08:13:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9012 to 9012. [2020-12-09 08:13:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2020-12-09 08:13:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 13374 transitions. [2020-12-09 08:13:47,305 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 13374 transitions. Word has length 201 [2020-12-09 08:13:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:47,305 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 13374 transitions. [2020-12-09 08:13:47,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 13374 transitions. [2020-12-09 08:13:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-09 08:13:47,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:47,316 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:47,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 08:13:47,317 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:47,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:47,317 INFO L82 PathProgramCache]: Analyzing trace with hash 612708956, now seen corresponding path program 1 times [2020-12-09 08:13:47,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:47,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913195491] [2020-12-09 08:13:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-09 08:13:47,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913195491] [2020-12-09 08:13:47,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:47,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:13:47,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88501349] [2020-12-09 08:13:47,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:47,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:47,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:47,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:47,396 INFO L87 Difference]: Start difference. First operand 9012 states and 13374 transitions. Second operand 3 states. [2020-12-09 08:13:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:48,052 INFO L93 Difference]: Finished difference Result 21598 states and 32147 transitions. [2020-12-09 08:13:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:48,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-12-09 08:13:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:48,074 INFO L225 Difference]: With dead ends: 21598 [2020-12-09 08:13:48,074 INFO L226 Difference]: Without dead ends: 12730 [2020-12-09 08:13:48,081 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 08:13:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12730 states. [2020-12-09 08:13:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12730 to 12730. [2020-12-09 08:13:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12730 states. [2020-12-09 08:13:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12730 states to 12730 states and 18035 transitions. [2020-12-09 08:13:48,212 INFO L78 Accepts]: Start accepts. Automaton has 12730 states and 18035 transitions. Word has length 204 [2020-12-09 08:13:48,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:48,212 INFO L481 AbstractCegarLoop]: Abstraction has 12730 states and 18035 transitions. [2020-12-09 08:13:48,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 12730 states and 18035 transitions. [2020-12-09 08:13:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-12-09 08:13:48,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:48,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:48,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 08:13:48,225 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:48,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1251556565, now seen corresponding path program 1 times [2020-12-09 08:13:48,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:48,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631765397] [2020-12-09 08:13:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-12-09 08:13:48,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631765397] [2020-12-09 08:13:48,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699835698] [2020-12-09 08:13:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/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 08:13:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:48,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:13:48,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:13:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 08:13:48,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:13:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 08:13:48,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 08:13:48,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 08:13:48,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539247801] [2020-12-09 08:13:48,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:48,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:48,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:48,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:13:48,814 INFO L87 Difference]: Start difference. First operand 12730 states and 18035 transitions. Second operand 3 states. [2020-12-09 08:13:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:49,409 INFO L93 Difference]: Finished difference Result 30035 states and 43131 transitions. [2020-12-09 08:13:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:49,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2020-12-09 08:13:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:49,439 INFO L225 Difference]: With dead ends: 30035 [2020-12-09 08:13:49,439 INFO L226 Difference]: Without dead ends: 17592 [2020-12-09 08:13:49,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 502 SyntacticMatches, 0 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 08:13:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17592 states. [2020-12-09 08:13:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17592 to 16162. [2020-12-09 08:13:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16162 states. [2020-12-09 08:13:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16162 states to 16162 states and 22406 transitions. [2020-12-09 08:13:49,622 INFO L78 Accepts]: Start accepts. Automaton has 16162 states and 22406 transitions. Word has length 252 [2020-12-09 08:13:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:49,623 INFO L481 AbstractCegarLoop]: Abstraction has 16162 states and 22406 transitions. [2020-12-09 08:13:49,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 16162 states and 22406 transitions. [2020-12-09 08:13:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-12-09 08:13:49,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:49,642 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-12-09 08:13:49,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:13:49,843 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:49,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1784060870, now seen corresponding path program 1 times [2020-12-09 08:13:49,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:49,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190634677] [2020-12-09 08:13:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:13:50,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190634677] [2020-12-09 08:13:50,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:13:50,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:13:50,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402884955] [2020-12-09 08:13:50,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:13:50,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:13:50,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:13:50,044 INFO L87 Difference]: Start difference. First operand 16162 states and 22406 transitions. Second operand 3 states. [2020-12-09 08:13:50,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:50,697 INFO L93 Difference]: Finished difference Result 39330 states and 54303 transitions. [2020-12-09 08:13:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:13:50,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2020-12-09 08:13:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:50,723 INFO L225 Difference]: With dead ends: 39330 [2020-12-09 08:13:50,723 INFO L226 Difference]: Without dead ends: 23455 [2020-12-09 08:13:50,736 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 08:13:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23455 states. [2020-12-09 08:13:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23455 to 23169. [2020-12-09 08:13:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23169 states. [2020-12-09 08:13:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23169 states to 23169 states and 31083 transitions. [2020-12-09 08:13:51,024 INFO L78 Accepts]: Start accepts. Automaton has 23169 states and 31083 transitions. Word has length 267 [2020-12-09 08:13:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:51,024 INFO L481 AbstractCegarLoop]: Abstraction has 23169 states and 31083 transitions. [2020-12-09 08:13:51,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:13:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 23169 states and 31083 transitions. [2020-12-09 08:13:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-12-09 08:13:51,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:51,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-12-09 08:13:51,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 08:13:51,042 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:51,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1787562702, now seen corresponding path program 1 times [2020-12-09 08:13:51,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:51,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14705466] [2020-12-09 08:13:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-09 08:13:51,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14705466] [2020-12-09 08:13:51,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509065603] [2020-12-09 08:13:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/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 08:13:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:51,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:13:51,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:13:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 08:13:51,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:13:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 08:13:51,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 08:13:51,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 08:13:51,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122850922] [2020-12-09 08:13:51,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:13:51,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:51,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:13:51,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:13:51,905 INFO L87 Difference]: Start difference. First operand 23169 states and 31083 transitions. Second operand 4 states. [2020-12-09 08:13:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:52,957 INFO L93 Difference]: Finished difference Result 57205 states and 76969 transitions. [2020-12-09 08:13:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:13:52,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2020-12-09 08:13:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:53,003 INFO L225 Difference]: With dead ends: 57205 [2020-12-09 08:13:53,003 INFO L226 Difference]: Without dead ends: 34323 [2020-12-09 08:13:53,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:13:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34323 states. [2020-12-09 08:13:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34323 to 34323. [2020-12-09 08:13:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34323 states. [2020-12-09 08:13:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34323 states to 34323 states and 44810 transitions. [2020-12-09 08:13:53,527 INFO L78 Accepts]: Start accepts. Automaton has 34323 states and 44810 transitions. Word has length 269 [2020-12-09 08:13:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:53,527 INFO L481 AbstractCegarLoop]: Abstraction has 34323 states and 44810 transitions. [2020-12-09 08:13:53,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:13:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 34323 states and 44810 transitions. [2020-12-09 08:13:53,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-12-09 08:13:53,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:13:53,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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] [2020-12-09 08:13:53,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-09 08:13:53,790 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:13:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:13:53,791 INFO L82 PathProgramCache]: Analyzing trace with hash 654379929, now seen corresponding path program 1 times [2020-12-09 08:13:53,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:13:53,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124184126] [2020-12-09 08:13:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:13:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:13:54,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124184126] [2020-12-09 08:13:54,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781359086] [2020-12-09 08:13:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/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 08:13:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:13:54,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:13:54,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:13:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 08:13:54,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:13:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 08:13:54,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 08:13:54,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 08:13:54,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541518862] [2020-12-09 08:13:54,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:13:54,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:13:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:13:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:13:54,833 INFO L87 Difference]: Start difference. First operand 34323 states and 44810 transitions. Second operand 4 states. [2020-12-09 08:13:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:13:55,835 INFO L93 Difference]: Finished difference Result 74935 states and 97871 transitions. [2020-12-09 08:13:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:13:55,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2020-12-09 08:13:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:13:55,836 INFO L225 Difference]: With dead ends: 74935 [2020-12-09 08:13:55,836 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:13:55,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:13:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:13:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:13:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:13:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:13:55,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2020-12-09 08:13:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:13:55,855 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:13:55,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:13:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:13:55,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:13:56,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:13:56,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:13:56,239 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 32 [2020-12-09 08:13:56,368 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 32 [2020-12-09 08:13:56,526 INFO L262 CegarLoopResult]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,526 INFO L262 CegarLoopResult]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,526 INFO L262 CegarLoopResult]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,526 INFO L262 CegarLoopResult]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,527 INFO L262 CegarLoopResult]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,528 INFO L262 CegarLoopResult]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,529 INFO L262 CegarLoopResult]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L1575-1(lines 64 1660) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,530 INFO L262 CegarLoopResult]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L1578-1(lines 64 1660) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L1579(line 1579) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,531 INFO L262 CegarLoopResult]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1579) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,532 INFO L262 CegarLoopResult]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,533 INFO L262 CegarLoopResult]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L258 CegarLoopResult]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse0 (= ~a27~0 1)) (.cse3 (= ~a11~0 1))) (let ((.cse2 (= ~a12~0 1)) (.cse1 (or .cse0 .cse3))) (or (and .cse0 (= ~a11~0 0)) (and (= ~a6~0 0) (<= ~a26~0 0) .cse1) (<= 1 ~a3~0) (and .cse2 (= ~a27~0 0)) (and .cse2 (= ~a26~0 1) .cse1) .cse3 (= ~a6~0 1) (and .cse0 (= ~a12~0 0)) (and (= ~a5~0 1) .cse1)))) [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L265 CegarLoopResult]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,534 INFO L262 CegarLoopResult]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,535 INFO L258 CegarLoopResult]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse0 (= ~a27~0 1)) (.cse3 (= ~a11~0 1))) (let ((.cse2 (= ~a12~0 1)) (.cse1 (or .cse0 .cse3))) (or (and .cse0 (= ~a11~0 0)) (and (= ~a6~0 0) (<= ~a26~0 0) .cse1) (<= 1 ~a3~0) (and .cse2 (= ~a27~0 0)) (and .cse2 (= ~a26~0 1) .cse1) .cse3 (= ~a6~0 1) (and .cse0 (= ~a12~0 0)) (and (= ~a5~0 1) .cse1)))) [2020-12-09 08:13:56,535 INFO L262 CegarLoopResult]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,536 INFO L262 CegarLoopResult]: For program point L1673(line 1673) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,537 INFO L262 CegarLoopResult]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,538 INFO L262 CegarLoopResult]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,539 INFO L262 CegarLoopResult]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,539 INFO L262 CegarLoopResult]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,539 INFO L262 CegarLoopResult]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,539 INFO L262 CegarLoopResult]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2020-12-09 08:13:56,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:13:56 BoogieIcfgContainer [2020-12-09 08:13:56,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:13:56,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:13:56,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:13:56,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:13:56,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:13:40" (3/4) ... [2020-12-09 08:13:56,560 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:13:56,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2020-12-09 08:13:56,593 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 08:13:56,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 08:13:56,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 08:13:56,789 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5046163e-6306-4831-bacc-56503d6c9860/bin/utaipan/witness.graphml [2020-12-09 08:13:56,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:13:56,790 INFO L168 Benchmark]: Toolchain (without parser) took 19241.49 ms. Allocated memory was 136.3 MB in the beginning and 778.0 MB in the end (delta: 641.7 MB). Free memory was 101.6 MB in the beginning and 520.3 MB in the end (delta: -418.7 MB). Peak memory consumption was 224.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:13:56,790 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory is still 114.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:13:56,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.32 ms. Allocated memory is still 136.3 MB. Free memory was 101.4 MB in the beginning and 74.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:13:56,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.10 ms. Allocated memory is still 136.3 MB. Free memory was 74.3 MB in the beginning and 95.9 MB in the end (delta: -21.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:13:56,792 INFO L168 Benchmark]: Boogie Preprocessor took 69.64 ms. Allocated memory is still 136.3 MB. Free memory was 95.9 MB in the beginning and 84.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:13:56,792 INFO L168 Benchmark]: RCFGBuilder took 2211.09 ms. Allocated memory was 136.3 MB in the beginning and 270.5 MB in the end (delta: 134.2 MB). Free memory was 84.8 MB in the beginning and 137.4 MB in the end (delta: -52.6 MB). Peak memory consumption was 99.3 MB. Max. memory is 16.1 GB. [2020-12-09 08:13:56,792 INFO L168 Benchmark]: TraceAbstraction took 15853.76 ms. Allocated memory was 270.5 MB in the beginning and 778.0 MB in the end (delta: 507.5 MB). Free memory was 136.4 MB in the beginning and 558.0 MB in the end (delta: -421.7 MB). Peak memory consumption was 472.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:13:56,793 INFO L168 Benchmark]: Witness Printer took 232.60 ms. Allocated memory is still 778.0 MB. Free memory was 557.0 MB in the beginning and 520.3 MB in the end (delta: 36.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:13:56,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory is still 114.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 765.32 ms. Allocated memory is still 136.3 MB. Free memory was 101.4 MB in the beginning and 74.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.10 ms. Allocated memory is still 136.3 MB. Free memory was 74.3 MB in the beginning and 95.9 MB in the end (delta: -21.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.64 ms. Allocated memory is still 136.3 MB. Free memory was 95.9 MB in the beginning and 84.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2211.09 ms. Allocated memory was 136.3 MB in the beginning and 270.5 MB in the end (delta: 134.2 MB). Free memory was 84.8 MB in the beginning and 137.4 MB in the end (delta: -52.6 MB). Peak memory consumption was 99.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15853.76 ms. Allocated memory was 270.5 MB in the beginning and 778.0 MB in the end (delta: 507.5 MB). Free memory was 136.4 MB in the beginning and 558.0 MB in the end (delta: -421.7 MB). Peak memory consumption was 472.4 MB. Max. memory is 16.1 GB. * Witness Printer took 232.60 ms. Allocated memory is still 778.0 MB. Free memory was 557.0 MB in the beginning and 520.3 MB in the end (delta: 36.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1579]: 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: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((((a27 == 1 && a11 == 0) || ((a6 == 0 && a26 <= 0) && (a27 == 1 || a11 == 1))) || 1 <= a3) || (a12 == 1 && a27 == 0)) || ((a12 == 1 && a26 == 1) && (a27 == 1 || a11 == 1))) || a11 == 1) || a6 == 1) || (a27 == 1 && a12 == 0)) || (a5 == 1 && (a27 == 1 || a11 == 1)) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((((a27 == 1 && a11 == 0) || ((a6 == 0 && a26 <= 0) && (a27 == 1 || a11 == 1))) || 1 <= a3) || (a12 == 1 && a27 == 0)) || ((a12 == 1 && a26 == 1) && (a27 == 1 || a11 == 1))) || a11 == 1) || a6 == 1) || (a27 == 1 && a12 == 0)) || (a5 == 1 && (a27 == 1 || a11 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.3s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1305 SDtfs, 1085 SDslu, 67 SDs, 0 SdLazy, 6206 SolverSat, 1673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1994 GetRequests, 1971 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34323occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 1718 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 577 NumberOfFragments, 141 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19470 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 3433 NumberOfCodeBlocks, 3433 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4399 ConstructedInterpolants, 0 QuantifiedInterpolants, 3486435 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2028 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 1954/1978 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...