./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label14.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_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label14.c -s /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/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 df7f5e6e8c29563db4c2ff0747f0b53376257397 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:40,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:40,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:40,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:40,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:40,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:40,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:40,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:40,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:40,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:40,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:40,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:40,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:40,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:40,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:40,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:40,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:40,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:40,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:40,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:40,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:40,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:40,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:40,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:40,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:40,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:40,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:40,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:40,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:40,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:40,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:40,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:40,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:40,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:40,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:40,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:40,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:40,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:40,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:40,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:40,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:40,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:40,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:40,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:40,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:40,590 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:40,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:40,590 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:40,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:40,591 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:40,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:40,591 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:40,592 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:40,592 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:40,592 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:40,593 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:40,593 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:40,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:40,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:40,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:40,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:40,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:40,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:40,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:40,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:40,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:40,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:40,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:40,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:40,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:40,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:40,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:40,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:40,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:40,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:40,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:40,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:40,599 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:40,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:40,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:40,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:40,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:40,600 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_92190d50-e693-479e-82b8-6694d479551f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df7f5e6e8c29563db4c2ff0747f0b53376257397 [2020-11-28 07:40:40,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:40,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:40,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:40,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:40,926 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:40,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label14.c [2020-11-28 07:40:41,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/data/eb5a4af67/a51f8d0ed6d246999940ec5763cdea31/FLAGeea27a8e4 [2020-11-28 07:40:41,804 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:41,805 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/sv-benchmarks/c/eca-rers2012/Problem01_label14.c [2020-11-28 07:40:41,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/data/eb5a4af67/a51f8d0ed6d246999940ec5763cdea31/FLAGeea27a8e4 [2020-11-28 07:40:41,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/data/eb5a4af67/a51f8d0ed6d246999940ec5763cdea31 [2020-11-28 07:40:41,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:41,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:42,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:42,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:42,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:42,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:42,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d74e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42, skipping insertion in model container [2020-11-28 07:40:42,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:42,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:42,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:42,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:42,552 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:42,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:42,712 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:42,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42 WrapperNode [2020-11-28 07:40:42,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:42,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:42,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:42,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:42,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:42,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:42,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:42,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:42,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... [2020-11-28 07:40:42,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:42,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:42,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:42,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:42,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/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 [2020-11-28 07:40:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:45,513 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:45,513 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:40:45,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:45 BoogieIcfgContainer [2020-11-28 07:40:45,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:45,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:45,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:45,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:45,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:41" (1/3) ... [2020-11-28 07:40:45,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b449e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:45, skipping insertion in model container [2020-11-28 07:40:45,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:42" (2/3) ... [2020-11-28 07:40:45,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b449e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:45, skipping insertion in model container [2020-11-28 07:40:45,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:45" (3/3) ... [2020-11-28 07:40:45,525 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label14.c [2020-11-28 07:40:45,536 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:45,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:45,552 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:45,585 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:45,585 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:45,585 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:45,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:45,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:45,586 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:45,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:45,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:40:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:40:45,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:45,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:45,615 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:45,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1520715373, now seen corresponding path program 1 times [2020-11-28 07:40:45,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:45,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335468465] [2020-11-28 07:40:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:46,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335468465] [2020-11-28 07:40:46,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:46,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:46,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730034653] [2020-11-28 07:40:46,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:46,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:46,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:46,221 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-28 07:40:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:47,186 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-28 07:40:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:47,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-28 07:40:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:47,201 INFO L225 Difference]: With dead ends: 297 [2020-11-28 07:40:47,201 INFO L226 Difference]: Without dead ends: 216 [2020-11-28 07:40:47,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-28 07:40:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-28 07:40:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-28 07:40:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-28 07:40:47,281 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-28 07:40:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:47,281 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-28 07:40:47,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-28 07:40:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:40:47,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:47,286 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:40:47,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:47,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1832083396, now seen corresponding path program 1 times [2020-11-28 07:40:47,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:47,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111643497] [2020-11-28 07:40:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:47,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111643497] [2020-11-28 07:40:47,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:47,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:47,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412705927] [2020-11-28 07:40:47,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:47,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:47,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:47,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:47,506 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-28 07:40:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:48,219 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-11-28 07:40:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:48,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-28 07:40:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:48,225 INFO L225 Difference]: With dead ends: 500 [2020-11-28 07:40:48,225 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:40:48,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:40:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-11-28 07:40:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-28 07:40:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-28 07:40:48,245 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-28 07:40:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:48,245 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-28 07:40:48,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-28 07:40:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-28 07:40:48,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:48,250 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-11-28 07:40:48,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:48,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1009057352, now seen corresponding path program 1 times [2020-11-28 07:40:48,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:48,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951887855] [2020-11-28 07:40:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:48,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951887855] [2020-11-28 07:40:48,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:48,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:48,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434132140] [2020-11-28 07:40:48,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:48,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:48,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:48,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:48,397 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-28 07:40:48,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:48,918 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-28 07:40:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:48,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-28 07:40:48,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:48,922 INFO L225 Difference]: With dead ends: 573 [2020-11-28 07:40:48,922 INFO L226 Difference]: Without dead ends: 358 [2020-11-28 07:40:48,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-28 07:40:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-28 07:40:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-28 07:40:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2020-11-28 07:40:48,948 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2020-11-28 07:40:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:48,948 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2020-11-28 07:40:48,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:48,949 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2020-11-28 07:40:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-28 07:40:48,955 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:48,955 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:48,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:48,956 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash 554924478, now seen corresponding path program 1 times [2020-11-28 07:40:48,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:48,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293550688] [2020-11-28 07:40:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-28 07:40:49,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293550688] [2020-11-28 07:40:49,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:49,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:49,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759822110] [2020-11-28 07:40:49,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:49,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:49,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:49,068 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2020-11-28 07:40:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:49,476 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2020-11-28 07:40:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:49,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-28 07:40:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:49,484 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:40:49,484 INFO L226 Difference]: Without dead ends: 642 [2020-11-28 07:40:49,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-28 07:40:49,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-28 07:40:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:40:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 779 transitions. [2020-11-28 07:40:49,516 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 779 transitions. Word has length 111 [2020-11-28 07:40:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:49,516 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 779 transitions. [2020-11-28 07:40:49,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 779 transitions. [2020-11-28 07:40:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-28 07:40:49,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:49,525 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:49,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:49,525 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1659119059, now seen corresponding path program 1 times [2020-11-28 07:40:49,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:49,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407888628] [2020-11-28 07:40:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:40:49,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407888628] [2020-11-28 07:40:49,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:49,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:49,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250511523] [2020-11-28 07:40:49,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:49,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:49,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:49,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:49,596 INFO L87 Difference]: Start difference. First operand 571 states and 779 transitions. Second operand 4 states. [2020-11-28 07:40:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:50,215 INFO L93 Difference]: Finished difference Result 1283 states and 1754 transitions. [2020-11-28 07:40:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:50,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-11-28 07:40:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:50,220 INFO L225 Difference]: With dead ends: 1283 [2020-11-28 07:40:50,220 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:40:50,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:40:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-11-28 07:40:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-28 07:40:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 858 transitions. [2020-11-28 07:40:50,251 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 858 transitions. Word has length 117 [2020-11-28 07:40:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:50,254 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 858 transitions. [2020-11-28 07:40:50,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 858 transitions. [2020-11-28 07:40:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-28 07:40:50,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:50,261 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:50,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:40:50,263 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:50,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1221455664, now seen corresponding path program 1 times [2020-11-28 07:40:50,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:50,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752124540] [2020-11-28 07:40:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-28 07:40:50,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752124540] [2020-11-28 07:40:50,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:50,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:50,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841607013] [2020-11-28 07:40:50,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:50,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:50,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:50,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:50,377 INFO L87 Difference]: Start difference. First operand 642 states and 858 transitions. Second operand 4 states. [2020-11-28 07:40:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,088 INFO L93 Difference]: Finished difference Result 1496 states and 1977 transitions. [2020-11-28 07:40:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:51,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-11-28 07:40:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,097 INFO L225 Difference]: With dead ends: 1496 [2020-11-28 07:40:51,098 INFO L226 Difference]: Without dead ends: 855 [2020-11-28 07:40:51,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-28 07:40:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-28 07:40:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:40:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1022 transitions. [2020-11-28 07:40:51,123 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1022 transitions. Word has length 131 [2020-11-28 07:40:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,123 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1022 transitions. [2020-11-28 07:40:51,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1022 transitions. [2020-11-28 07:40:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-28 07:40:51,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,134 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:51,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:40:51,134 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash -175177597, now seen corresponding path program 1 times [2020-11-28 07:40:51,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085712022] [2020-11-28 07:40:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:40:51,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085712022] [2020-11-28 07:40:51,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:51,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:51,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645502744] [2020-11-28 07:40:51,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:51,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:51,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:51,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:51,365 INFO L87 Difference]: Start difference. First operand 784 states and 1022 transitions. Second operand 3 states. [2020-11-28 07:40:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,802 INFO L93 Difference]: Finished difference Result 1709 states and 2196 transitions. [2020-11-28 07:40:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:51,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-28 07:40:51,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,808 INFO L225 Difference]: With dead ends: 1709 [2020-11-28 07:40:51,809 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:40:51,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:40:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-28 07:40:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:40:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1016 transitions. [2020-11-28 07:40:51,836 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1016 transitions. Word has length 148 [2020-11-28 07:40:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,837 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1016 transitions. [2020-11-28 07:40:51,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:51,837 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1016 transitions. [2020-11-28 07:40:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-28 07:40:51,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,841 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:40:51,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:40:51,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,841 INFO L82 PathProgramCache]: Analyzing trace with hash 316521963, now seen corresponding path program 1 times [2020-11-28 07:40:51,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981454669] [2020-11-28 07:40:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-28 07:40:52,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981454669] [2020-11-28 07:40:52,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:52,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:52,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756077913] [2020-11-28 07:40:52,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:52,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:52,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:52,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:52,097 INFO L87 Difference]: Start difference. First operand 784 states and 1016 transitions. Second operand 4 states. [2020-11-28 07:40:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:52,707 INFO L93 Difference]: Finished difference Result 1733 states and 2208 transitions. [2020-11-28 07:40:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:52,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-11-28 07:40:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:52,714 INFO L225 Difference]: With dead ends: 1733 [2020-11-28 07:40:52,714 INFO L226 Difference]: Without dead ends: 950 [2020-11-28 07:40:52,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-11-28 07:40:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2020-11-28 07:40:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:40:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2020-11-28 07:40:52,740 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 191 [2020-11-28 07:40:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:52,742 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2020-11-28 07:40:52,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2020-11-28 07:40:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-28 07:40:52,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:52,746 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:52,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:40:52,747 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:52,747 INFO L82 PathProgramCache]: Analyzing trace with hash -942294300, now seen corresponding path program 1 times [2020-11-28 07:40:52,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:52,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533392577] [2020-11-28 07:40:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-28 07:40:52,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533392577] [2020-11-28 07:40:52,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:52,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:52,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615707024] [2020-11-28 07:40:52,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:52,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:52,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:52,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:52,879 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2020-11-28 07:40:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:53,375 INFO L93 Difference]: Finished difference Result 1851 states and 2332 transitions. [2020-11-28 07:40:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:53,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-11-28 07:40:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:53,382 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:40:53,382 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:40:53,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:53,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:40:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-28 07:40:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:40:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-28 07:40:53,411 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 204 [2020-11-28 07:40:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:53,412 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-28 07:40:53,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-28 07:40:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-11-28 07:40:53,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:53,417 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:53,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:40:53,417 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:53,418 INFO L82 PathProgramCache]: Analyzing trace with hash 413840914, now seen corresponding path program 1 times [2020-11-28 07:40:53,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:53,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759365792] [2020-11-28 07:40:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-11-28 07:40:53,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759365792] [2020-11-28 07:40:53,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619056219] [2020-11-28 07:40:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/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 [2020-11-28 07:40:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:53,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:40:53,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-11-28 07:40:54,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-11-28 07:40:54,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:54,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:40:54,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228284723] [2020-11-28 07:40:54,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:54,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:54,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:54,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:54,221 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-28 07:40:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:54,799 INFO L93 Difference]: Finished difference Result 2348 states and 2917 transitions. [2020-11-28 07:40:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:54,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2020-11-28 07:40:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:54,808 INFO L225 Difference]: With dead ends: 2348 [2020-11-28 07:40:54,808 INFO L226 Difference]: Without dead ends: 1352 [2020-11-28 07:40:54,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-28 07:40:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2020-11-28 07:40:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:40:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1521 transitions. [2020-11-28 07:40:54,854 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1521 transitions. Word has length 216 [2020-11-28 07:40:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:54,855 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1521 transitions. [2020-11-28 07:40:54,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1521 transitions. [2020-11-28 07:40:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-28 07:40:54,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:54,860 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:55,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:40:55,074 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:55,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1182837258, now seen corresponding path program 1 times [2020-11-28 07:40:55,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:55,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357252444] [2020-11-28 07:40:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 92 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-28 07:40:55,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357252444] [2020-11-28 07:40:55,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508880071] [2020-11-28 07:40:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/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 [2020-11-28 07:40:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:55,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:40:55,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-28 07:40:55,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-28 07:40:55,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:55,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-28 07:40:55,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312449449] [2020-11-28 07:40:55,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:55,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:55,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:55,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:55,637 INFO L87 Difference]: Start difference. First operand 1210 states and 1521 transitions. Second operand 3 states. [2020-11-28 07:40:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:56,114 INFO L93 Difference]: Finished difference Result 2630 states and 3281 transitions. [2020-11-28 07:40:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:56,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-11-28 07:40:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:56,115 INFO L225 Difference]: With dead ends: 2630 [2020-11-28 07:40:56,116 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:56,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:56,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-11-28 07:40:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:56,120 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:56,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:56,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:56,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:56,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:56,682 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-11-28 07:40:56,961 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-11-28 07:40:56,964 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:40:56,965 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:40:56,966 INFO L274 CegarLoopResult]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L579(line 579) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:40:56,967 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:40:56,968 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:40:56,968 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:40:56,968 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:56,968 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:40:56,968 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:40:56,968 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:40:56,968 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a16~0 6)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a8~0 13)) (.cse1 (= ~a20~0 1)) (.cse3 (not (= ~a7~0 1)))) (or (and .cse0 (not .cse1)) (and .cse0 (<= 5 ~a16~0)) (and .cse2 .cse3) (and .cse2 .cse4) (and .cse0 .cse4) (and .cse1 .cse3))) [2020-11-28 07:40:56,968 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:40:56,969 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:40:56,970 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a16~0 6)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a8~0 13)) (.cse1 (= ~a20~0 1)) (.cse3 (not (= ~a7~0 1)))) (or (and .cse0 (not .cse1)) (and .cse0 (<= 5 ~a16~0)) (and .cse2 .cse3) (and .cse2 .cse4) (and .cse0 .cse4) (and .cse1 .cse3))) [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:40:56,971 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:40:56,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:56 BoogieIcfgContainer [2020-11-28 07:40:56,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:56,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:56,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:56,989 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:56,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:45" (3/4) ... [2020-11-28 07:40:56,993 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:57,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:40:57,017 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:40:57,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:40:57,020 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:40:57,194 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_92190d50-e693-479e-82b8-6694d479551f/bin/utaipan/witness.graphml [2020-11-28 07:40:57,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:57,195 INFO L168 Benchmark]: Toolchain (without parser) took 15198.46 ms. Allocated memory was 96.5 MB in the beginning and 360.7 MB in the end (delta: 264.2 MB). Free memory was 66.7 MB in the beginning and 297.8 MB in the end (delta: -231.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,196 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 54.7 MB in the beginning and 54.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:57,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.45 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 57.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.75 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 52.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,197 INFO L168 Benchmark]: Boogie Preprocessor took 96.22 ms. Allocated memory is still 96.5 MB. Free memory was 52.2 MB in the beginning and 47.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,198 INFO L168 Benchmark]: RCFGBuilder took 2590.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 44.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,198 INFO L168 Benchmark]: TraceAbstraction took 11470.82 ms. Allocated memory was 117.4 MB in the beginning and 360.7 MB in the end (delta: 243.3 MB). Free memory was 44.4 MB in the beginning and 313.5 MB in the end (delta: -269.1 MB). Peak memory consumption was 134.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,198 INFO L168 Benchmark]: Witness Printer took 205.26 ms. Allocated memory is still 360.7 MB. Free memory was 313.5 MB in the beginning and 297.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:57,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 54.7 MB in the beginning and 54.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 713.45 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 57.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.75 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 52.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.22 ms. Allocated memory is still 96.5 MB. Free memory was 52.2 MB in the beginning and 47.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2590.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 44.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11470.82 ms. Allocated memory was 117.4 MB in the beginning and 360.7 MB in the end (delta: 243.3 MB). Free memory was 44.4 MB in the beginning and 313.5 MB in the end (delta: -269.1 MB). Peak memory consumption was 134.0 MB. Max. memory is 16.1 GB. * Witness Printer took 205.26 ms. Allocated memory is still 360.7 MB. Free memory was 313.5 MB in the beginning and 297.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a16 <= 5 && 5 <= a16)) || (a16 == 6 && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a20 == 1 && !(a7 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a16 <= 5 && 5 <= a16)) || (a16 == 6 && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a20 == 1 && !(a7 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 562 SDtfs, 1018 SDslu, 69 SDs, 0 SdLazy, 2861 SolverSat, 748 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 912 GetRequests, 887 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 663 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 48 NumberOfFragments, 93 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10698 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2204 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2436 ConstructedInterpolants, 0 QuantifiedInterpolants, 1506165 SizeOfPredicates, 2 NumberOfNonLiveVariables, 994 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 2550/2728 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...