./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label31.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/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 5dd4c4a8834c6f526493b06f6bf2b3c1eba582a5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:34,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:34,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:34,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:34,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:34,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:34,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:34,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:34,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:34,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:34,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:34,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:34,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:34,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:34,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:34,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:34,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:34,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:34,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:34,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:34,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:34,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:34,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:34,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:34,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:34,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:34,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:34,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:34,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:34,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:34,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:34,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:34,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:34,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:34,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:34,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:34,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:34,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:34,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:34,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:34,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:34,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:34,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:34,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:34,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:34,666 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:34,666 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:34,667 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:34,667 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:34,667 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:34,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:34,667 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:34,668 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:34,668 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:34,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:34,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:34,668 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:34,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:34,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:34,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:34,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:34,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:34,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:34,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:34,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:34,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:34,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:34,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:34,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:34,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:34,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:34,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:34,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:34,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:34,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:34,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:34,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:34,677 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:34,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:34,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:34,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:34,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:34,679 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_9be903d8-d7ff-4615-bed6-febd86a06c74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd4c4a8834c6f526493b06f6bf2b3c1eba582a5 [2020-11-22 12:57:34,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:34,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:34,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:34,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:34,967 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:34,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label31.c [2020-11-22 12:57:35,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/data/5a324bea3/b09f4d284ec74e89addb117267aea341/FLAGf7a917c96 [2020-11-22 12:57:35,668 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:35,669 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/sv-benchmarks/c/eca-rers2012/Problem02_label31.c [2020-11-22 12:57:35,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/data/5a324bea3/b09f4d284ec74e89addb117267aea341/FLAGf7a917c96 [2020-11-22 12:57:35,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/data/5a324bea3/b09f4d284ec74e89addb117267aea341 [2020-11-22 12:57:35,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:35,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:35,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:35,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:35,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:35,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b696166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35, skipping insertion in model container [2020-11-22 12:57:35,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:35,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:36,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:36,374 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:36,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:36,605 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:36,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36 WrapperNode [2020-11-22 12:57:36,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:36,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:36,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:36,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:36,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:36,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:36,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:36,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:36,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... [2020-11-22 12:57:36,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:36,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:36,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:36,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:36,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:39,299 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:39,299 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:57:39,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:39 BoogieIcfgContainer [2020-11-22 12:57:39,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:39,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:39,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:39,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:39,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:35" (1/3) ... [2020-11-22 12:57:39,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66392c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:39, skipping insertion in model container [2020-11-22 12:57:39,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:36" (2/3) ... [2020-11-22 12:57:39,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66392c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:39, skipping insertion in model container [2020-11-22 12:57:39,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:39" (3/3) ... [2020-11-22 12:57:39,314 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label31.c [2020-11-22 12:57:39,330 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:39,337 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:39,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:39,391 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:39,391 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:39,391 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:39,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:39,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:39,392 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:39,392 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:39,392 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 12:57:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 12:57:39,423 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:39,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:39,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:39,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:39,433 INFO L82 PathProgramCache]: Analyzing trace with hash -216542192, now seen corresponding path program 1 times [2020-11-22 12:57:39,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:39,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981785960] [2020-11-22 12:57:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:39,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981785960] [2020-11-22 12:57:39,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:39,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:39,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33059190] [2020-11-22 12:57:39,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:39,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:39,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:39,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:39,856 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 12:57:40,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:40,505 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 12:57:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:40,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 12:57:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:40,520 INFO L225 Difference]: With dead ends: 251 [2020-11-22 12:57:40,523 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:57:40,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:57:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:57:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:57:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-22 12:57:40,591 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-22 12:57:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:40,593 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-22 12:57:40,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-22 12:57:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-22 12:57:40,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:40,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:40,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:40,598 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:40,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1992952381, now seen corresponding path program 1 times [2020-11-22 12:57:40,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:40,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154616007] [2020-11-22 12:57:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:40,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154616007] [2020-11-22 12:57:40,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:40,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:40,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689392098] [2020-11-22 12:57:40,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:40,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:40,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:40,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:40,698 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-22 12:57:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:41,329 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-22 12:57:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:41,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-22 12:57:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:41,333 INFO L225 Difference]: With dead ends: 485 [2020-11-22 12:57:41,333 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 12:57:41,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 12:57:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-22 12:57:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 12:57:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-22 12:57:41,361 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-22 12:57:41,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:41,361 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-22 12:57:41,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-22 12:57:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-22 12:57:41,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:41,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:41,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:41,366 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:41,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:41,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1654436066, now seen corresponding path program 1 times [2020-11-22 12:57:41,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:41,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000679868] [2020-11-22 12:57:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:41,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000679868] [2020-11-22 12:57:41,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339341381] [2020-11-22 12:57:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:41,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:41,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:41,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:41,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:41,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 12:57:41,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933414343] [2020-11-22 12:57:41,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:41,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:41,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:41,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:41,693 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-22 12:57:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:42,362 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-11-22 12:57:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:42,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-22 12:57:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:42,368 INFO L225 Difference]: With dead ends: 565 [2020-11-22 12:57:42,368 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 12:57:42,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 12:57:42,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-22 12:57:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-22 12:57:42,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-11-22 12:57:42,417 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-11-22 12:57:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:42,418 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-11-22 12:57:42,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-11-22 12:57:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-22 12:57:42,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:42,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:42,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 12:57:42,653 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash -215854118, now seen corresponding path program 1 times [2020-11-22 12:57:42,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:42,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491803411] [2020-11-22 12:57:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:42,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491803411] [2020-11-22 12:57:42,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:42,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:42,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244535208] [2020-11-22 12:57:42,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:42,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:42,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:42,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:42,758 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-11-22 12:57:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:43,072 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-11-22 12:57:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:43,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-22 12:57:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:43,075 INFO L225 Difference]: With dead ends: 805 [2020-11-22 12:57:43,076 INFO L226 Difference]: Without dead ends: 403 [2020-11-22 12:57:43,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-22 12:57:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-22 12:57:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-22 12:57:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-11-22 12:57:43,112 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-11-22 12:57:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:43,114 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-11-22 12:57:43,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-11-22 12:57:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 12:57:43,119 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:43,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:43,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:43,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:43,120 INFO L82 PathProgramCache]: Analyzing trace with hash 441526300, now seen corresponding path program 1 times [2020-11-22 12:57:43,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:43,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135441700] [2020-11-22 12:57:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:57:43,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135441700] [2020-11-22 12:57:43,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:43,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:43,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413584874] [2020-11-22 12:57:43,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:43,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:43,217 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-11-22 12:57:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:43,684 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-11-22 12:57:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:43,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 12:57:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:43,688 INFO L225 Difference]: With dead ends: 885 [2020-11-22 12:57:43,688 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 12:57:43,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 12:57:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-22 12:57:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-22 12:57:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-22 12:57:43,714 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-11-22 12:57:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:43,715 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-22 12:57:43,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-22 12:57:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-22 12:57:43,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:43,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:43,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:57:43,719 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:43,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:43,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1831503276, now seen corresponding path program 1 times [2020-11-22 12:57:43,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:43,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027514302] [2020-11-22 12:57:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:57:43,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027514302] [2020-11-22 12:57:43,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285026758] [2020-11-22 12:57:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:43,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:43,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:44,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:57:44,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:44,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-22 12:57:44,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126626154] [2020-11-22 12:57:44,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:44,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:44,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:44,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:44,154 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-11-22 12:57:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:44,691 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2020-11-22 12:57:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:44,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-22 12:57:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:44,699 INFO L225 Difference]: With dead ends: 1365 [2020-11-22 12:57:44,699 INFO L226 Difference]: Without dead ends: 883 [2020-11-22 12:57:44,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-11-22 12:57:44,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-11-22 12:57:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-22 12:57:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2020-11-22 12:57:44,733 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2020-11-22 12:57:44,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:44,734 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2020-11-22 12:57:44,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2020-11-22 12:57:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-22 12:57:44,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:44,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:44,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:44,961 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:44,961 INFO L82 PathProgramCache]: Analyzing trace with hash -834469368, now seen corresponding path program 1 times [2020-11-22 12:57:44,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:44,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113194266] [2020-11-22 12:57:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-22 12:57:45,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113194266] [2020-11-22 12:57:45,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:45,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:45,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652371900] [2020-11-22 12:57:45,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:45,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:45,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:45,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:45,101 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 5 states. [2020-11-22 12:57:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:45,950 INFO L93 Difference]: Finished difference Result 1961 states and 2591 transitions. [2020-11-22 12:57:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:57:45,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-11-22 12:57:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:45,959 INFO L225 Difference]: With dead ends: 1961 [2020-11-22 12:57:45,959 INFO L226 Difference]: Without dead ends: 993 [2020-11-22 12:57:45,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-11-22 12:57:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 883. [2020-11-22 12:57:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-22 12:57:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1099 transitions. [2020-11-22 12:57:45,992 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1099 transitions. Word has length 135 [2020-11-22 12:57:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:45,992 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1099 transitions. [2020-11-22 12:57:45,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1099 transitions. [2020-11-22 12:57:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-22 12:57:45,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:45,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:45,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:57:45,996 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash -788636974, now seen corresponding path program 1 times [2020-11-22 12:57:45,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:45,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388467829] [2020-11-22 12:57:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-22 12:57:46,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388467829] [2020-11-22 12:57:46,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060558863] [2020-11-22 12:57:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/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 [2020-11-22 12:57:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:46,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:46,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-22 12:57:46,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-22 12:57:46,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:46,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 12:57:46,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371689455] [2020-11-22 12:57:46,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:46,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:46,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:46,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:46,499 INFO L87 Difference]: Start difference. First operand 883 states and 1099 transitions. Second operand 3 states. [2020-11-22 12:57:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:46,938 INFO L93 Difference]: Finished difference Result 1925 states and 2458 transitions. [2020-11-22 12:57:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:46,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-11-22 12:57:46,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:46,945 INFO L225 Difference]: With dead ends: 1925 [2020-11-22 12:57:46,945 INFO L226 Difference]: Without dead ends: 1123 [2020-11-22 12:57:46,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-11-22 12:57:46,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1043. [2020-11-22 12:57:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-22 12:57:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1277 transitions. [2020-11-22 12:57:46,978 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1277 transitions. Word has length 139 [2020-11-22 12:57:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:46,980 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1277 transitions. [2020-11-22 12:57:46,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:46,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1277 transitions. [2020-11-22 12:57:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-22 12:57:46,983 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:46,983 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:47,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:47,213 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:47,214 INFO L82 PathProgramCache]: Analyzing trace with hash -189560249, now seen corresponding path program 1 times [2020-11-22 12:57:47,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:47,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317137123] [2020-11-22 12:57:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-11-22 12:57:47,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317137123] [2020-11-22 12:57:47,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915822023] [2020-11-22 12:57:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/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 [2020-11-22 12:57:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:47,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:47,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-22 12:57:47,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-22 12:57:47,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:47,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 12:57:47,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303828023] [2020-11-22 12:57:47,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:47,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:47,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:47,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:47,561 INFO L87 Difference]: Start difference. First operand 1043 states and 1277 transitions. Second operand 3 states. [2020-11-22 12:57:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:48,044 INFO L93 Difference]: Finished difference Result 2163 states and 2687 transitions. [2020-11-22 12:57:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:48,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-11-22 12:57:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:48,046 INFO L225 Difference]: With dead ends: 2163 [2020-11-22 12:57:48,046 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:48,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:48,050 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-11-22 12:57:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:48,051 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:48,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:48,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:48,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:48,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:48,516 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 12:57:48,516 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 12:57:48,516 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 12:57:48,516 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 12:57:48,516 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 12:57:48,517 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:48,518 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L526-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 12:57:48,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L529-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 12:57:48,520 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 12:57:48,521 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 12:57:48,521 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 12:57:48,521 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 12:57:48,521 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 12:57:48,521 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 12:57:48,521 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 12:57:48,521 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 7))) (or (and (<= 9 ~a28~0) .cse0) (and .cse1 (= ~a21~0 1) .cse2 .cse0) (and (= ~a25~0 ~a11~0) .cse1 .cse0 .cse3) (and (= ~a25~0 0) .cse0) (and .cse2 .cse0 .cse3))) [2020-11-22 12:57:48,521 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 12:57:48,522 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 7))) (or (and (<= 9 ~a28~0) .cse0) (and .cse1 (= ~a21~0 1) .cse2 .cse0) (and (= ~a25~0 ~a11~0) .cse1 .cse0 .cse3) (and (= ~a25~0 0) .cse0) (and .cse2 .cse0 .cse3))) [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 12:57:48,523 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 12:57:48,524 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 12:57:48,524 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 12:57:48,524 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 12:57:48,524 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 12:57:48,524 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 12:57:48,524 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 12:57:48,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:48 BoogieIcfgContainer [2020-11-22 12:57:48,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:48,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:48,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:48,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:48,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:39" (3/4) ... [2020-11-22 12:57:48,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:48,596 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-22 12:57:48,598 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:57:48,599 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:57:48,601 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:57:48,782 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9be903d8-d7ff-4615-bed6-febd86a06c74/bin/utaipan/witness.graphml [2020-11-22 12:57:48,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:48,784 INFO L168 Benchmark]: Toolchain (without parser) took 12883.27 ms. Allocated memory was 123.7 MB in the beginning and 299.9 MB in the end (delta: 176.2 MB). Free memory was 87.9 MB in the beginning and 169.1 MB in the end (delta: -81.2 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:48,784 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory was 35.1 MB in the beginning and 35.0 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:48,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.09 ms. Allocated memory is still 123.7 MB. Free memory was 87.9 MB in the beginning and 82.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:48,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.27 ms. Allocated memory is still 123.7 MB. Free memory was 82.2 MB in the beginning and 77.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:48,785 INFO L168 Benchmark]: Boogie Preprocessor took 56.51 ms. Allocated memory is still 123.7 MB. Free memory was 77.4 MB in the beginning and 72.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:48,786 INFO L168 Benchmark]: RCFGBuilder took 2540.83 ms. Allocated memory was 123.7 MB in the beginning and 161.5 MB in the end (delta: 37.7 MB). Free memory was 72.5 MB in the beginning and 101.7 MB in the end (delta: -29.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:48,786 INFO L168 Benchmark]: TraceAbstraction took 9251.26 ms. Allocated memory was 161.5 MB in the beginning and 299.9 MB in the end (delta: 138.4 MB). Free memory was 100.7 MB in the beginning and 184.8 MB in the end (delta: -84.1 MB). Peak memory consumption was 54.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:48,787 INFO L168 Benchmark]: Witness Printer took 224.78 ms. Allocated memory is still 299.9 MB. Free memory was 184.8 MB in the beginning and 169.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:48,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory was 35.1 MB in the beginning and 35.0 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 705.09 ms. Allocated memory is still 123.7 MB. Free memory was 87.9 MB in the beginning and 82.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.27 ms. Allocated memory is still 123.7 MB. Free memory was 82.2 MB in the beginning and 77.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.51 ms. Allocated memory is still 123.7 MB. Free memory was 77.4 MB in the beginning and 72.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2540.83 ms. Allocated memory was 123.7 MB in the beginning and 161.5 MB in the end (delta: 37.7 MB). Free memory was 72.5 MB in the beginning and 101.7 MB in the end (delta: -29.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9251.26 ms. Allocated memory was 161.5 MB in the beginning and 299.9 MB in the end (delta: 138.4 MB). Free memory was 100.7 MB in the beginning and 184.8 MB in the end (delta: -84.1 MB). Peak memory consumption was 54.3 MB. Max. memory is 16.1 GB. * Witness Printer took 224.78 ms. Allocated memory is still 299.9 MB. Free memory was 184.8 MB in the beginning and 169.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((9 <= a28 && a17 <= 8) || (((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (a25 == 0 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((9 <= a28 && a17 <= 8) || (((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (a25 == 0 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 459 SDtfs, 685 SDslu, 59 SDs, 0 SdLazy, 2172 SolverSat, 602 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1050 GetRequests, 1023 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 350 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 103 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1408 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1531 NumberOfCodeBlocks, 1531 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2029 ConstructedInterpolants, 0 QuantifiedInterpolants, 596051 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1338 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1158/1180 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...