./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label02.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_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/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 203014188672df6ecb5502efd1e8042fd4aedfd2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:29:22,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:29:22,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:29:22,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:29:22,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:29:22,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:29:22,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:29:22,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:29:22,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:29:22,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:29:22,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:29:22,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:29:22,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:29:22,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:29:22,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:29:22,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:29:22,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:29:22,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:29:22,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:29:22,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:29:22,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:29:22,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:29:22,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:29:22,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:29:22,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:29:22,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:29:22,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:29:22,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:29:22,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:29:22,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:29:22,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:29:22,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:29:22,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:29:22,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:29:22,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:29:22,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:29:22,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:29:22,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:29:22,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:29:22,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:29:22,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:29:22,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:29:22,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:29:22,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:29:22,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:29:22,662 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:29:22,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:29:22,662 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:29:22,662 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:29:22,663 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:29:22,663 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:29:22,663 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:29:22,664 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:29:22,665 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:29:22,665 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:29:22,665 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:29:22,665 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:29:22,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:29:22,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:29:22,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:29:22,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:29:22,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:29:22,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:29:22,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:29:22,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:29:22,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:29:22,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:29:22,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:29:22,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:29:22,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:29:22,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:29:22,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:29:22,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:29:22,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:29:22,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:29:22,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:29:22,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:29:22,672 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:29:22,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:29:22,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:29:22,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:29:22,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:29:22,673 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_b7972db8-984d-4353-9494-1f3f3654692d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 203014188672df6ecb5502efd1e8042fd4aedfd2 [2020-11-28 07:29:22,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:29:22,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:29:22,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:29:22,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:29:22,973 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:29:22,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label02.c [2020-11-28 07:29:23,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/data/04acadbbf/8b79067ad70945f8ae2e97ca8abe0087/FLAGca854e87f [2020-11-28 07:29:23,598 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:29:23,598 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/sv-benchmarks/c/eca-rers2012/Problem02_label02.c [2020-11-28 07:29:23,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/data/04acadbbf/8b79067ad70945f8ae2e97ca8abe0087/FLAGca854e87f [2020-11-28 07:29:23,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/data/04acadbbf/8b79067ad70945f8ae2e97ca8abe0087 [2020-11-28 07:29:23,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:29:23,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:29:23,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:23,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:29:23,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:29:23,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:23" (1/1) ... [2020-11-28 07:29:23,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a4aae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:23, skipping insertion in model container [2020-11-28 07:29:23,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:23" (1/1) ... [2020-11-28 07:29:23,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:29:23,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:29:24,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:24,379 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:29:24,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:24,522 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:29:24,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24 WrapperNode [2020-11-28 07:29:24,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:24,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:24,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:29:24,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:29:24,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:24,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:29:24,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:29:24,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:29:24,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:29:24,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:29:24,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:29:24,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:29:24,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/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 07:29:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:29:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:29:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:29:24,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:29:26,959 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:29:26,959 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:29:26,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:26 BoogieIcfgContainer [2020-11-28 07:29:26,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:29:26,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:29:26,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:29:26,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:29:26,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:29:23" (1/3) ... [2020-11-28 07:29:26,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4b2a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:26, skipping insertion in model container [2020-11-28 07:29:26,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24" (2/3) ... [2020-11-28 07:29:26,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4b2a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:26, skipping insertion in model container [2020-11-28 07:29:26,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:26" (3/3) ... [2020-11-28 07:29:26,974 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-11-28 07:29:26,987 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:29:26,992 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:29:27,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:29:27,037 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:29:27,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:29:27,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:29:27,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:29:27,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:29:27,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:29:27,039 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:29:27,039 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:29:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:29:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:29:27,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:27,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:27,069 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:27,077 INFO L82 PathProgramCache]: Analyzing trace with hash -216556729, now seen corresponding path program 1 times [2020-11-28 07:29:27,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:27,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544728938] [2020-11-28 07:29:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:27,564 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 07:29:27,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544728938] [2020-11-28 07:29:27,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:27,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:27,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116892358] [2020-11-28 07:29:27,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:27,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:27,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:27,590 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:29:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:28,265 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:29:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:28,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:29:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:28,295 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:29:28,295 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:29:28,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:29:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:29:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:29:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-28 07:29:28,358 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-28 07:29:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:28,359 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-28 07:29:28,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-28 07:29:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:29:28,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:28,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:28,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:29:28,364 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:28,365 INFO L82 PathProgramCache]: Analyzing trace with hash -215868655, now seen corresponding path program 1 times [2020-11-28 07:29:28,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:28,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638724525] [2020-11-28 07:29:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:28,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638724525] [2020-11-28 07:29:28,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:28,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:28,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749427852] [2020-11-28 07:29:28,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:28,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:28,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:28,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:28,447 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-28 07:29:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:28,729 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-28 07:29:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:28,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:29:28,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:28,731 INFO L225 Difference]: With dead ends: 325 [2020-11-28 07:29:28,732 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:29:28,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:29:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:29:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:29:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-28 07:29:28,762 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-28 07:29:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:28,763 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-28 07:29:28,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-28 07:29:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 07:29:28,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:28,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:28,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:29:28,774 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:28,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1467807780, now seen corresponding path program 1 times [2020-11-28 07:29:28,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:28,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721328451] [2020-11-28 07:29:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:28,924 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 07:29:28,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721328451] [2020-11-28 07:29:28,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:28,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:28,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119072787] [2020-11-28 07:29:28,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:28,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:28,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:28,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:28,933 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-28 07:29:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:29,284 INFO L93 Difference]: Finished difference Result 487 states and 847 transitions. [2020-11-28 07:29:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:29,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-28 07:29:29,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:29,295 INFO L225 Difference]: With dead ends: 487 [2020-11-28 07:29:29,295 INFO L226 Difference]: Without dead ends: 325 [2020-11-28 07:29:29,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:29,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-11-28 07:29:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-11-28 07:29:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:29:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 534 transitions. [2020-11-28 07:29:29,343 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 534 transitions. Word has length 98 [2020-11-28 07:29:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:29,343 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 534 transitions. [2020-11-28 07:29:29,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 534 transitions. [2020-11-28 07:29:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-28 07:29:29,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:29,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:29,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:29:29,353 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:29,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1495846121, now seen corresponding path program 1 times [2020-11-28 07:29:29,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:29,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153642030] [2020-11-28 07:29:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 07:29:29,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153642030] [2020-11-28 07:29:29,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:29,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:29,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362349861] [2020-11-28 07:29:29,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:29,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:29,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:29,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:29,431 INFO L87 Difference]: Start difference. First operand 323 states and 534 transitions. Second operand 3 states. [2020-11-28 07:29:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:29,866 INFO L93 Difference]: Finished difference Result 805 states and 1333 transitions. [2020-11-28 07:29:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:29,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-11-28 07:29:29,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:29,870 INFO L225 Difference]: With dead ends: 805 [2020-11-28 07:29:29,870 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:29:29,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:29:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:29:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:29:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 714 transitions. [2020-11-28 07:29:29,909 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 714 transitions. Word has length 102 [2020-11-28 07:29:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:29,910 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 714 transitions. [2020-11-28 07:29:29,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 714 transitions. [2020-11-28 07:29:29,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:29:29,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:29,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:29,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:29:29,917 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:29,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1095830450, now seen corresponding path program 1 times [2020-11-28 07:29:29,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:29,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719006654] [2020-11-28 07:29:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 07:29:30,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719006654] [2020-11-28 07:29:30,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331683680] [2020-11-28 07:29:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/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 07:29:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:30,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:29:30,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:29:30,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:29:30,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:29:30,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:29:30,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525527597] [2020-11-28 07:29:30,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:30,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:30,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:30,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:30,420 INFO L87 Difference]: Start difference. First operand 483 states and 714 transitions. Second operand 3 states. [2020-11-28 07:29:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:31,076 INFO L93 Difference]: Finished difference Result 1205 states and 1869 transitions. [2020-11-28 07:29:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:31,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:29:31,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:31,083 INFO L225 Difference]: With dead ends: 1205 [2020-11-28 07:29:31,083 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:29:31,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:29:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 643. [2020-11-28 07:29:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:29:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 919 transitions. [2020-11-28 07:29:31,106 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 919 transitions. Word has length 107 [2020-11-28 07:29:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:31,107 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 919 transitions. [2020-11-28 07:29:31,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 919 transitions. [2020-11-28 07:29:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-28 07:29:31,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:31,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:31,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:31,336 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 441511763, now seen corresponding path program 1 times [2020-11-28 07:29:31,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:31,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592846629] [2020-11-28 07:29:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:29:31,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592846629] [2020-11-28 07:29:31,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:31,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:31,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189107724] [2020-11-28 07:29:31,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:31,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:31,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:31,454 INFO L87 Difference]: Start difference. First operand 643 states and 919 transitions. Second operand 3 states. [2020-11-28 07:29:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:31,926 INFO L93 Difference]: Finished difference Result 1365 states and 2012 transitions. [2020-11-28 07:29:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:31,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-28 07:29:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:31,932 INFO L225 Difference]: With dead ends: 1365 [2020-11-28 07:29:31,933 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:29:31,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:29:31,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-11-28 07:29:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-28 07:29:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1109 transitions. [2020-11-28 07:29:31,973 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1109 transitions. Word has length 111 [2020-11-28 07:29:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:31,974 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1109 transitions. [2020-11-28 07:29:31,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1109 transitions. [2020-11-28 07:29:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:29:31,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:31,977 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:29:31,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:29:31,978 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:31,983 INFO L82 PathProgramCache]: Analyzing trace with hash 744611676, now seen corresponding path program 1 times [2020-11-28 07:29:31,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:31,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681504629] [2020-11-28 07:29:31,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 07:29:32,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681504629] [2020-11-28 07:29:32,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720518016] [2020-11-28 07:29:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/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 07:29:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:32,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:29:32,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-28 07:29:32,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-28 07:29:32,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:29:32,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-28 07:29:32,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626148755] [2020-11-28 07:29:32,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:32,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:32,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:32,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:32,360 INFO L87 Difference]: Start difference. First operand 803 states and 1109 transitions. Second operand 4 states. [2020-11-28 07:29:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:33,045 INFO L93 Difference]: Finished difference Result 1925 states and 2672 transitions. [2020-11-28 07:29:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:29:33,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-11-28 07:29:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:33,053 INFO L225 Difference]: With dead ends: 1925 [2020-11-28 07:29:33,053 INFO L226 Difference]: Without dead ends: 1203 [2020-11-28 07:29:33,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-11-28 07:29:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-11-28 07:29:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-28 07:29:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1524 transitions. [2020-11-28 07:29:33,089 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1524 transitions. Word has length 171 [2020-11-28 07:29:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:33,090 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1524 transitions. [2020-11-28 07:29:33,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1524 transitions. [2020-11-28 07:29:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:29:33,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:33,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:33,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:33,320 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:33,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:33,321 INFO L82 PathProgramCache]: Analyzing trace with hash -207293773, now seen corresponding path program 1 times [2020-11-28 07:29:33,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:33,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806121423] [2020-11-28 07:29:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:29:33,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806121423] [2020-11-28 07:29:33,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:33,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:29:33,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592245677] [2020-11-28 07:29:33,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:33,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:33,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:33,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:33,472 INFO L87 Difference]: Start difference. First operand 1203 states and 1524 transitions. Second operand 3 states. [2020-11-28 07:29:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:33,913 INFO L93 Difference]: Finished difference Result 2405 states and 3057 transitions. [2020-11-28 07:29:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:33,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:29:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:33,919 INFO L225 Difference]: With dead ends: 2405 [2020-11-28 07:29:33,919 INFO L226 Difference]: Without dead ends: 1043 [2020-11-28 07:29:33,921 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 07:29:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-11-28 07:29:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2020-11-28 07:29:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-28 07:29:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1180 transitions. [2020-11-28 07:29:33,948 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1180 transitions. Word has length 171 [2020-11-28 07:29:33,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:33,949 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1180 transitions. [2020-11-28 07:29:33,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1180 transitions. [2020-11-28 07:29:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-28 07:29:33,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:33,952 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:29:33,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:29:33,953 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:29:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:33,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1862273025, now seen corresponding path program 1 times [2020-11-28 07:29:33,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:33,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38103221] [2020-11-28 07:29:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-11-28 07:29:34,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38103221] [2020-11-28 07:29:34,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25551667] [2020-11-28 07:29:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:34,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:29:34,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:29:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-28 07:29:34,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:29:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-28 07:29:34,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:29:34,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:29:34,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135325703] [2020-11-28 07:29:34,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:34,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:34,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:34,329 INFO L87 Difference]: Start difference. First operand 963 states and 1180 transitions. Second operand 3 states. [2020-11-28 07:29:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:34,780 INFO L93 Difference]: Finished difference Result 2243 states and 2775 transitions. [2020-11-28 07:29:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:34,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-11-28 07:29:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:34,781 INFO L225 Difference]: With dead ends: 2243 [2020-11-28 07:29:34,781 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:29:34,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:29:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:29:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:29:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:29:34,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 185 [2020-11-28 07:29:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:34,784 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:29:34,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:29:34,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:29:34,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:29:34,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:29:35,280 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-11-28 07:29:35,500 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-11-28 07:29:35,502 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:29:35,502 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:29:35,503 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:29:35,505 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:29:35,505 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:29:35,505 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L460-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:29:35,506 INFO L274 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:29:35,507 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:29:35,508 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:29:35,508 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (<= ~a28~0 9)) (.cse1 (<= ~a17~0 7)) (.cse0 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse5 (< ~a28~0 11)) (.cse4 (<= ~a17~0 8))) (or (and (= ~a25~0 ~a11~0) .cse0 (<= ~a28~0 7) .cse1) (and .cse2 .cse3 .cse4) (and (<= 9 ~a28~0) (or (and .cse0 (= ~a25~0 0) .cse5 .cse1) (and .cse3 .cse1))) (and .cse0 .cse2 .cse4) (and (<= ~a19~0 0) .cse5 .cse4))) [2020-11-28 07:29:35,508 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:29:35,508 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:29:35,508 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:29:35,508 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:29:35,508 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:29:35,508 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:29:35,508 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (<= ~a28~0 9)) (.cse1 (<= ~a17~0 7)) (.cse0 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse5 (< ~a28~0 11)) (.cse4 (<= ~a17~0 8))) (or (and (= ~a25~0 ~a11~0) .cse0 (<= ~a28~0 7) .cse1) (and .cse2 .cse3 .cse4) (and (<= 9 ~a28~0) (or (and .cse0 (= ~a25~0 0) .cse5 .cse1) (and .cse3 .cse1))) (and .cse0 .cse2 .cse4) (and (<= ~a19~0 0) .cse5 .cse4))) [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:29:35,509 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:29:35,510 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:29:35,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:29:35 BoogieIcfgContainer [2020-11-28 07:29:35,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:29:35,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:29:35,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:29:35,532 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:29:35,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:26" (3/4) ... [2020-11-28 07:29:35,536 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:29:35,558 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:29:35,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:29:35,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:29:35,563 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:29:35,694 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7972db8-984d-4353-9494-1f3f3654692d/bin/utaipan/witness.graphml [2020-11-28 07:29:35,699 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:29:35,700 INFO L168 Benchmark]: Toolchain (without parser) took 11844.82 ms. Allocated memory was 90.2 MB in the beginning and 274.7 MB in the end (delta: 184.5 MB). Free memory was 57.8 MB in the beginning and 136.3 MB in the end (delta: -78.5 MB). Peak memory consumption was 105.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:35,701 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 45.7 MB in the beginning and 45.7 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:35,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.56 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 50.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:35,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.33 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 50.9 MB in the beginning and 86.3 MB in the end (delta: -35.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:35,702 INFO L168 Benchmark]: Boogie Preprocessor took 75.55 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 81.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:35,702 INFO L168 Benchmark]: RCFGBuilder took 2268.89 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 81.8 MB in the beginning and 77.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:35,703 INFO L168 Benchmark]: TraceAbstraction took 8564.57 ms. Allocated memory was 136.3 MB in the beginning and 274.7 MB in the end (delta: 138.4 MB). Free memory was 77.5 MB in the beginning and 152.0 MB in the end (delta: -74.5 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:35,703 INFO L168 Benchmark]: Witness Printer took 167.58 ms. Allocated memory is still 274.7 MB. Free memory was 152.0 MB in the beginning and 136.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:35,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 45.7 MB in the beginning and 45.7 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 668.56 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 50.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.33 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 50.9 MB in the beginning and 86.3 MB in the end (delta: -35.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.55 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 81.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2268.89 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 81.8 MB in the beginning and 77.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8564.57 ms. Allocated memory was 136.3 MB in the beginning and 274.7 MB in the end (delta: 138.4 MB). Free memory was 77.5 MB in the beginning and 152.0 MB in the end (delta: -74.5 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. * Witness Printer took 167.58 ms. Allocated memory is still 274.7 MB. Free memory was 152.0 MB in the beginning and 136.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 7) || ((8 <= a17 && a28 <= 9) && a17 <= 8)) || (9 <= a28 && ((((a19 == 1 && a25 == 0) && a28 < 11) && a17 <= 7) || (a28 <= 9 && a17 <= 7)))) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((a19 <= 0 && a28 < 11) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 7) || ((8 <= a17 && a28 <= 9) && a17 <= 8)) || (9 <= a28 && ((((a19 == 1 && a25 == 0) && a28 < 11) && a17 <= 7) || (a28 <= 9 && a17 <= 7)))) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((a19 <= 0 && a28 < 11) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.9s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 651 SDslu, 43 SDs, 0 SdLazy, 2048 SolverSat, 497 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 942 GetRequests, 924 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 242 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 139 HoareAnnotationTreeSize, 3 FomulaSimplifications, 590 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1579 NumberOfCodeBlocks, 1579 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2027 ConstructedInterpolants, 0 QuantifiedInterpolants, 430375 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1042 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 1157/1166 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...