./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label46.c -s /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/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 92a01e6695cf7123f47033a13419f7d997344346 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 16:35:44,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:35:44,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:35:44,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:35:44,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:35:44,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:35:44,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:35:44,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:35:44,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:35:44,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:35:44,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:35:44,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:35:44,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:35:44,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:35:44,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:35:44,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:35:44,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:35:44,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:35:44,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:35:44,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:35:44,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:35:44,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:35:44,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:35:44,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:35:44,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:35:44,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:35:44,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:35:44,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:35:44,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:35:44,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:35:44,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:35:44,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:35:44,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:35:44,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:35:44,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:35:44,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:35:44,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:35:44,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:35:44,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:35:44,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:35:44,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:35:44,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:35:44,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:35:44,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:35:44,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:35:44,704 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:35:44,704 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:35:44,704 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:35:44,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:35:44,704 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:35:44,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:35:44,705 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:35:44,705 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:35:44,705 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:35:44,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:35:44,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:35:44,706 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:35:44,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:35:44,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:35:44,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:35:44,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:35:44,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:35:44,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:35:44,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:35:44,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:35:44,708 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:35:44,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:35:44,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:35:44,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:35:44,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:35:44,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:35:44,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:35:44,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:35:44,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:35:44,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:35:44,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:35:44,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:35:44,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:35:44,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:35:44,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:35:44,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:35:44,710 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_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92a01e6695cf7123f47033a13419f7d997344346 [2020-12-09 16:35:44,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:35:44,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:35:44,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:35:44,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:35:44,918 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:35:44,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label46.c [2020-12-09 16:35:44,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/data/74e1dbb07/46b51a13474c4dd29408c636208bb842/FLAG33c4c69cd [2020-12-09 16:35:45,406 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:35:45,406 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/sv-benchmarks/c/eca-rers2012/Problem02_label46.c [2020-12-09 16:35:45,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/data/74e1dbb07/46b51a13474c4dd29408c636208bb842/FLAG33c4c69cd [2020-12-09 16:35:45,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/data/74e1dbb07/46b51a13474c4dd29408c636208bb842 [2020-12-09 16:35:45,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:35:45,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:35:45,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:35:45,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:35:45,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:35:45,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23377d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45, skipping insertion in model container [2020-12-09 16:35:45,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:35:45,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:35:45,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/sv-benchmarks/c/eca-rers2012/Problem02_label46.c[18150,18163] [2020-12-09 16:35:45,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:35:45,687 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:35:45,738 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/sv-benchmarks/c/eca-rers2012/Problem02_label46.c[18150,18163] [2020-12-09 16:35:45,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:35:45,757 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:35:45,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45 WrapperNode [2020-12-09 16:35:45,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:35:45,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:35:45,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:35:45,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:35:45,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:35:45,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:35:45,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:35:45,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:35:45,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... [2020-12-09 16:35:45,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:35:45,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:35:45,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:35:45,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:35:45,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:35:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:35:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:35:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:35:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:35:47,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:35:47,198 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 16:35:47,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:35:47 BoogieIcfgContainer [2020-12-09 16:35:47,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:35:47,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:35:47,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:35:47,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:35:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:35:45" (1/3) ... [2020-12-09 16:35:47,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f944ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:35:47, skipping insertion in model container [2020-12-09 16:35:47,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:35:45" (2/3) ... [2020-12-09 16:35:47,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f944ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:35:47, skipping insertion in model container [2020-12-09 16:35:47,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:35:47" (3/3) ... [2020-12-09 16:35:47,206 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-12-09 16:35:47,216 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:35:47,219 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:35:47,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 16:35:47,243 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:35:47,243 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:35:47,243 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:35:47,243 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:35:47,243 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:35:47,243 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:35:47,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:35:47,244 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:35:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 16:35:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 16:35:47,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:47,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:47,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash 925956367, now seen corresponding path program 1 times [2020-12-09 16:35:47,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:47,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353829103] [2020-12-09 16:35:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:47,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353829103] [2020-12-09 16:35:47,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:35:47,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:35:47,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224540435] [2020-12-09 16:35:47,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:47,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:47,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:47,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:47,534 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 16:35:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:47,889 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 16:35:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:47,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 16:35:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:47,901 INFO L225 Difference]: With dead ends: 251 [2020-12-09 16:35:47,901 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 16:35:47,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 16:35:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 16:35:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 16:35:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 16:35:47,953 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 16:35:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:47,954 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 16:35:47,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 16:35:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 16:35:47,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:47,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:47,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:35:47,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:47,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:47,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1028677124, now seen corresponding path program 1 times [2020-12-09 16:35:47,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:47,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861606410] [2020-12-09 16:35:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:48,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861606410] [2020-12-09 16:35:48,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:35:48,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:35:48,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167603177] [2020-12-09 16:35:48,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:48,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:48,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:48,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:48,041 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 16:35:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:48,305 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 16:35:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:48,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 16:35:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:48,308 INFO L225 Difference]: With dead ends: 485 [2020-12-09 16:35:48,308 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 16:35:48,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 16:35:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 16:35:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 16:35:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2020-12-09 16:35:48,325 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 84 [2020-12-09 16:35:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:48,325 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2020-12-09 16:35:48,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2020-12-09 16:35:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 16:35:48,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:48,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:48,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:35:48,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:48,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2137927005, now seen corresponding path program 1 times [2020-12-09 16:35:48,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:48,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750697471] [2020-12-09 16:35:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:48,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750697471] [2020-12-09 16:35:48,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142789797] [2020-12-09 16:35:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:48,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:35:48,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:35:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 16:35:48,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:35:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 16:35:48,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:35:48,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 16:35:48,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831599645] [2020-12-09 16:35:48,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:48,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:48,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:48,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:35:48,620 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand 3 states. [2020-12-09 16:35:48,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:48,905 INFO L93 Difference]: Finished difference Result 805 states and 1261 transitions. [2020-12-09 16:35:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:48,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 16:35:48,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:48,908 INFO L225 Difference]: With dead ends: 805 [2020-12-09 16:35:48,908 INFO L226 Difference]: Without dead ends: 483 [2020-12-09 16:35:48,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:35:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-09 16:35:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-12-09 16:35:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 16:35:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 728 transitions. [2020-12-09 16:35:48,927 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 728 transitions. Word has length 89 [2020-12-09 16:35:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:48,928 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 728 transitions. [2020-12-09 16:35:48,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 728 transitions. [2020-12-09 16:35:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 16:35:48,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:48,930 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:49,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 16:35:49,131 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:49,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1673767258, now seen corresponding path program 2 times [2020-12-09 16:35:49,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:49,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291474415] [2020-12-09 16:35:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 16:35:49,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291474415] [2020-12-09 16:35:49,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:35:49,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:35:49,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075958105] [2020-12-09 16:35:49,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:49,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:49,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:49,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:49,212 INFO L87 Difference]: Start difference. First operand 483 states and 728 transitions. Second operand 3 states. [2020-12-09 16:35:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:49,454 INFO L93 Difference]: Finished difference Result 1125 states and 1741 transitions. [2020-12-09 16:35:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:49,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 16:35:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:49,457 INFO L225 Difference]: With dead ends: 1125 [2020-12-09 16:35:49,457 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 16:35:49,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 16:35:49,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 16:35:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 16:35:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 909 transitions. [2020-12-09 16:35:49,473 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 909 transitions. Word has length 94 [2020-12-09 16:35:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:49,473 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 909 transitions. [2020-12-09 16:35:49,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 909 transitions. [2020-12-09 16:35:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 16:35:49,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:49,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:49,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:35:49,475 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:49,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2134426297, now seen corresponding path program 1 times [2020-12-09 16:35:49,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:49,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116228802] [2020-12-09 16:35:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:49,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116228802] [2020-12-09 16:35:49,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:35:49,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:35:49,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109846518] [2020-12-09 16:35:49,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:49,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:49,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:49,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:49,519 INFO L87 Difference]: Start difference. First operand 643 states and 909 transitions. Second operand 3 states. [2020-12-09 16:35:49,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:49,801 INFO L93 Difference]: Finished difference Result 1525 states and 2209 transitions. [2020-12-09 16:35:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:49,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 16:35:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:49,806 INFO L225 Difference]: With dead ends: 1525 [2020-12-09 16:35:49,806 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 16:35:49,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 16:35:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 803. [2020-12-09 16:35:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 16:35:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1185 transitions. [2020-12-09 16:35:49,823 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1185 transitions. Word has length 103 [2020-12-09 16:35:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:49,823 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1185 transitions. [2020-12-09 16:35:49,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1185 transitions. [2020-12-09 16:35:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-09 16:35:49,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:49,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:49,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 16:35:49,826 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:49,826 INFO L82 PathProgramCache]: Analyzing trace with hash -911078004, now seen corresponding path program 1 times [2020-12-09 16:35:49,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:49,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370747757] [2020-12-09 16:35:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 16:35:49,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370747757] [2020-12-09 16:35:49,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:35:49,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:35:49,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623649604] [2020-12-09 16:35:49,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:49,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:49,873 INFO L87 Difference]: Start difference. First operand 803 states and 1185 transitions. Second operand 3 states. [2020-12-09 16:35:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:50,206 INFO L93 Difference]: Finished difference Result 2165 states and 3221 transitions. [2020-12-09 16:35:50,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:50,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-09 16:35:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:50,215 INFO L225 Difference]: With dead ends: 2165 [2020-12-09 16:35:50,215 INFO L226 Difference]: Without dead ends: 1363 [2020-12-09 16:35:50,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:35:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-12-09 16:35:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1203. [2020-12-09 16:35:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-12-09 16:35:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1711 transitions. [2020-12-09 16:35:50,248 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1711 transitions. Word has length 105 [2020-12-09 16:35:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:50,248 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1711 transitions. [2020-12-09 16:35:50,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1711 transitions. [2020-12-09 16:35:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 16:35:50,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:50,250 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:50,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 16:35:50,250 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:50,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2118168815, now seen corresponding path program 1 times [2020-12-09 16:35:50,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:50,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439975782] [2020-12-09 16:35:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:50,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439975782] [2020-12-09 16:35:50,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943121776] [2020-12-09 16:35:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:50,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:35:50,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:35:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 16:35:50,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:35:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 16:35:50,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:35:50,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 16:35:50,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657647627] [2020-12-09 16:35:50,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:50,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:50,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:50,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:35:50,603 INFO L87 Difference]: Start difference. First operand 1203 states and 1711 transitions. Second operand 3 states. [2020-12-09 16:35:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:50,899 INFO L93 Difference]: Finished difference Result 2805 states and 3987 transitions. [2020-12-09 16:35:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:50,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 16:35:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:50,905 INFO L225 Difference]: With dead ends: 2805 [2020-12-09 16:35:50,906 INFO L226 Difference]: Without dead ends: 1443 [2020-12-09 16:35:50,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:35:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-12-09 16:35:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1363. [2020-12-09 16:35:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-12-09 16:35:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1794 transitions. [2020-12-09 16:35:50,929 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1794 transitions. Word has length 107 [2020-12-09 16:35:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:50,929 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1794 transitions. [2020-12-09 16:35:50,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1794 transitions. [2020-12-09 16:35:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-09 16:35:50,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:50,931 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:51,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:51,134 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1440845208, now seen corresponding path program 1 times [2020-12-09 16:35:51,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:51,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528938730] [2020-12-09 16:35:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-09 16:35:51,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528938730] [2020-12-09 16:35:51,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416497315] [2020-12-09 16:35:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:51,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:35:51,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:35:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-12-09 16:35:51,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:35:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-12-09 16:35:51,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:35:51,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 16:35:51,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780339184] [2020-12-09 16:35:51,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:51,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:51,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:51,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:35:51,527 INFO L87 Difference]: Start difference. First operand 1363 states and 1794 transitions. Second operand 3 states. [2020-12-09 16:35:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:51,671 INFO L93 Difference]: Finished difference Result 2565 states and 3344 transitions. [2020-12-09 16:35:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:51,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-09 16:35:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:51,678 INFO L225 Difference]: With dead ends: 2565 [2020-12-09 16:35:51,678 INFO L226 Difference]: Without dead ends: 1043 [2020-12-09 16:35:51,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:35:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-09 16:35:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-12-09 16:35:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-12-09 16:35:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1271 transitions. [2020-12-09 16:35:51,709 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1271 transitions. Word has length 128 [2020-12-09 16:35:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:51,710 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1271 transitions. [2020-12-09 16:35:51,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1271 transitions. [2020-12-09 16:35:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-09 16:35:51,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:51,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:51,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:51,913 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1234256178, now seen corresponding path program 1 times [2020-12-09 16:35:51,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:51,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764058892] [2020-12-09 16:35:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 16:35:51,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764058892] [2020-12-09 16:35:51,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259138764] [2020-12-09 16:35:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:52,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:35:52,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:35:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-09 16:35:52,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:35:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-09 16:35:52,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:35:52,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 16:35:52,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858487765] [2020-12-09 16:35:52,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:52,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:35:52,198 INFO L87 Difference]: Start difference. First operand 1043 states and 1271 transitions. Second operand 3 states. [2020-12-09 16:35:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:52,389 INFO L93 Difference]: Finished difference Result 2647 states and 3226 transitions. [2020-12-09 16:35:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:52,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-09 16:35:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:52,395 INFO L225 Difference]: With dead ends: 2647 [2020-12-09 16:35:52,395 INFO L226 Difference]: Without dead ends: 1685 [2020-12-09 16:35:52,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:35:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-12-09 16:35:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1603. [2020-12-09 16:35:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2020-12-09 16:35:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1934 transitions. [2020-12-09 16:35:52,420 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1934 transitions. Word has length 137 [2020-12-09 16:35:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:52,420 INFO L481 AbstractCegarLoop]: Abstraction has 1603 states and 1934 transitions. [2020-12-09 16:35:52,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1934 transitions. [2020-12-09 16:35:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-09 16:35:52,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:52,422 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:52,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:52,624 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash 86629912, now seen corresponding path program 1 times [2020-12-09 16:35:52,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:52,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957038308] [2020-12-09 16:35:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 68 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 16:35:52,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957038308] [2020-12-09 16:35:52,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239054971] [2020-12-09 16:35:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:52,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:35:52,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:35:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 16:35:52,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:35:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 16:35:53,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:35:53,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-12-09 16:35:53,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438442115] [2020-12-09 16:35:53,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:35:53,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:53,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:35:53,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:35:53,051 INFO L87 Difference]: Start difference. First operand 1603 states and 1934 transitions. Second operand 4 states. [2020-12-09 16:35:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:53,374 INFO L93 Difference]: Finished difference Result 3765 states and 4543 transitions. [2020-12-09 16:35:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:35:53,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-12-09 16:35:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:53,382 INFO L225 Difference]: With dead ends: 3765 [2020-12-09 16:35:53,382 INFO L226 Difference]: Without dead ends: 2243 [2020-12-09 16:35:53,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:35:53,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-12-09 16:35:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1523. [2020-12-09 16:35:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-12-09 16:35:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1742 transitions. [2020-12-09 16:35:53,404 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1742 transitions. Word has length 141 [2020-12-09 16:35:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:53,405 INFO L481 AbstractCegarLoop]: Abstraction has 1523 states and 1742 transitions. [2020-12-09 16:35:53,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:35:53,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1742 transitions. [2020-12-09 16:35:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-09 16:35:53,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:53,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:35:53,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 16:35:53,608 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1562553775, now seen corresponding path program 1 times [2020-12-09 16:35:53,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:53,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318659857] [2020-12-09 16:35:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:53,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318659857] [2020-12-09 16:35:53,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777603699] [2020-12-09 16:35:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:53,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:35:53,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:35:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:53,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:35:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:35:53,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:35:53,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 16:35:53,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959391029] [2020-12-09 16:35:53,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:35:53,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:35:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:35:53,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:35:53,952 INFO L87 Difference]: Start difference. First operand 1523 states and 1742 transitions. Second operand 3 states. [2020-12-09 16:35:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:35:54,185 INFO L93 Difference]: Finished difference Result 3365 states and 3842 transitions. [2020-12-09 16:35:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:35:54,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-12-09 16:35:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:35:54,193 INFO L225 Difference]: With dead ends: 3365 [2020-12-09 16:35:54,193 INFO L226 Difference]: Without dead ends: 1843 [2020-12-09 16:35:54,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:35:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-12-09 16:35:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2020-12-09 16:35:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-12-09 16:35:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2026 transitions. [2020-12-09 16:35:54,220 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2026 transitions. Word has length 149 [2020-12-09 16:35:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:35:54,220 INFO L481 AbstractCegarLoop]: Abstraction has 1843 states and 2026 transitions. [2020-12-09 16:35:54,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:35:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2026 transitions. [2020-12-09 16:35:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-09 16:35:54,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:35:54,223 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 16:35:54,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:54,425 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:35:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:35:54,426 INFO L82 PathProgramCache]: Analyzing trace with hash 650899383, now seen corresponding path program 1 times [2020-12-09 16:35:54,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:35:54,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669940748] [2020-12-09 16:35:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:35:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 181 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 16:35:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669940748] [2020-12-09 16:35:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827460380] [2020-12-09 16:35:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:35:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:35:54,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 16:35:54,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:35:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 233 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 16:35:54,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:35:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 233 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 16:35:55,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1624542701] [2020-12-09 16:35:55,033 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 16:35:55,033 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:35:55,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:35:55,040 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:35:55,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:35:59,941 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-12-09 16:36:00,148 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-12-09 16:36:01,409 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-12-09 16:36:01,538 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-09 16:36:01,721 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 149 [2020-12-09 16:36:01,848 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-09 16:36:02,014 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-09 16:36:02,141 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-09 16:36:02,328 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 149 [2020-12-09 16:36:02,454 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-09 16:36:02,588 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-09 16:36:02,714 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-09 16:36:02,854 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-12-09 16:36:05,614 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:36:05,737 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:36:05,892 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:36:06,017 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:36:06,209 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 16:36:06,332 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:36:06,463 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:36:06,585 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:36:10,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 33 [2020-12-09 16:36:10,818 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7696 conjuctions. This might take some time... [2020-12-09 16:36:10,962 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 276 conjuctions. [2020-12-09 16:36:10,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 33 [2020-12-09 16:36:11,058 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7696 conjuctions. This might take some time... [2020-12-09 16:36:11,204 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 276 conjuctions. [2020-12-09 16:36:11,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 33 [2020-12-09 16:36:11,372 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7696 conjuctions. This might take some time... [2020-12-09 16:36:11,515 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 276 conjuctions. [2020-12-09 16:36:14,585 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:36:14,955 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2020-12-09 16:36:15,149 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-12-09 16:36:15,495 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-12-09 16:36:15,742 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-12-09 16:36:16,032 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-12-09 16:36:16,426 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 16:36:18,471 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 102 [2020-12-09 16:36:24,214 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:36:24,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:36:24,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2020-12-09 16:36:24,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313937841] [2020-12-09 16:36:24,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 16:36:24,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:36:24,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 16:36:24,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-09 16:36:24,216 INFO L87 Difference]: Start difference. First operand 1843 states and 2026 transitions. Second operand 8 states. [2020-12-09 16:36:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:36:24,956 INFO L93 Difference]: Finished difference Result 2922 states and 3204 transitions. [2020-12-09 16:36:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 16:36:24,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-12-09 16:36:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:36:24,957 INFO L225 Difference]: With dead ends: 2922 [2020-12-09 16:36:24,958 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:36:24,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 482 SyntacticMatches, 184 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-09 16:36:24,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:36:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:36:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:36:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:36:24,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 225 [2020-12-09 16:36:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:36:24,961 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:36:24,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 16:36:24,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:36:24,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:36:25,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:36:25,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 16:36:25,359 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-12-09 16:36:25,498 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-12-09 16:36:25,501 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 16:36:25,501 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 16:36:25,501 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 16:36:25,501 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 16:36:25,502 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L514-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L517-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 16:36:25,503 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 518) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 16:36:25,504 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse6 (<= ~a28~0 9)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 8)) (.cse4 (= ~a11~0 0)) (.cse8 (<= ~a19~0 0)) (.cse3 (= ~a25~0 1)) (.cse7 (= ~a11~0 1)) (.cse5 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse4 .cse5 (<= ~a28~0 10) (< 8 ~a28~0)) (and .cse0 (= ~a25~0 0) .cse1 .cse2 .cse4 (<= ~a28~0 7)) (and .cse6 .cse7 .cse5) (and .cse8 .cse4 .cse6 .cse5) (and .cse8 .cse1 .cse2 .cse3 .cse4 (= ~a28~0 10)) (and .cse8 .cse7) (and .cse3 .cse7 .cse5))) [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 16:36:25,505 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 16:36:25,506 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse6 (<= ~a28~0 9)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 8)) (.cse4 (= ~a11~0 0)) (.cse8 (<= ~a19~0 0)) (.cse3 (= ~a25~0 1)) (.cse7 (= ~a11~0 1)) (.cse5 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse4 .cse5 (<= ~a28~0 10) (< 8 ~a28~0)) (and .cse0 (= ~a25~0 0) .cse1 .cse2 .cse4 (<= ~a28~0 7)) (and .cse6 .cse7 .cse5) (and .cse8 .cse4 .cse6 .cse5) (and .cse8 .cse1 .cse2 .cse3 .cse4 (= ~a28~0 10)) (and .cse8 .cse7) (and .cse3 .cse7 .cse5))) [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 16:36:25,507 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 16:36:25,508 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 16:36:25,508 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 16:36:25,508 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 16:36:25,508 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 16:36:25,508 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 16:36:25,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:36:25 BoogieIcfgContainer [2020-12-09 16:36:25,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:36:25,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:36:25,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:36:25,525 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:36:25,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:35:47" (3/4) ... [2020-12-09 16:36:25,527 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:36:25,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-12-09 16:36:25,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 16:36:25,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 16:36:25,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 16:36:25,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_60b5d85f-0bf6-44c2-b3b9-e89d570ca171/bin/utaipan/witness.graphml [2020-12-09 16:36:25,641 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:36:25,641 INFO L168 Benchmark]: Toolchain (without parser) took 40207.44 ms. Allocated memory was 94.4 MB in the beginning and 509.6 MB in the end (delta: 415.2 MB). Free memory was 52.2 MB in the beginning and 341.9 MB in the end (delta: -289.6 MB). Peak memory consumption was 125.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:36:25,641 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:36:25,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.60 ms. Allocated memory is still 94.4 MB. Free memory was 52.1 MB in the beginning and 50.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:36:25,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.26 ms. Allocated memory is still 94.4 MB. Free memory was 50.0 MB in the beginning and 44.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:36:25,642 INFO L168 Benchmark]: Boogie Preprocessor took 47.28 ms. Allocated memory is still 94.4 MB. Free memory was 44.7 MB in the beginning and 66.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 16:36:25,642 INFO L168 Benchmark]: RCFGBuilder took 1342.19 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 66.0 MB in the beginning and 92.7 MB in the end (delta: -26.7 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:36:25,643 INFO L168 Benchmark]: TraceAbstraction took 38322.61 ms. Allocated memory was 138.4 MB in the beginning and 509.6 MB in the end (delta: 371.2 MB). Free memory was 92.7 MB in the beginning and 356.5 MB in the end (delta: -263.9 MB). Peak memory consumption was 108.4 MB. Max. memory is 16.1 GB. [2020-12-09 16:36:25,643 INFO L168 Benchmark]: Witness Printer took 116.41 ms. Allocated memory is still 509.6 MB. Free memory was 356.5 MB in the beginning and 341.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:36:25,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.60 ms. Allocated memory is still 94.4 MB. Free memory was 52.1 MB in the beginning and 50.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.26 ms. Allocated memory is still 94.4 MB. Free memory was 50.0 MB in the beginning and 44.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.28 ms. Allocated memory is still 94.4 MB. Free memory was 44.7 MB in the beginning and 66.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1342.19 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 66.0 MB in the beginning and 92.7 MB in the end (delta: -26.7 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38322.61 ms. Allocated memory was 138.4 MB in the beginning and 509.6 MB in the end (delta: 371.2 MB). Free memory was 92.7 MB in the beginning and 356.5 MB in the end (delta: -263.9 MB). Peak memory consumption was 108.4 MB. Max. memory is 16.1 GB. * Witness Printer took 116.41 ms. Allocated memory is still 509.6 MB. Free memory was 356.5 MB in the beginning and 341.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 518]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) || ((((a19 == 1 && a11 == 0) && a17 <= 8) && a28 <= 10) && 8 < a28)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && a17 == 8) && a11 == 0) && a28 <= 7)) || ((a28 <= 9 && a11 == 1) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 9) && a17 <= 8)) || (((((a19 <= 0 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) && a28 == 10)) || (a19 <= 0 && a11 == 1)) || ((a25 == 1 && a11 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) || ((((a19 == 1 && a11 == 0) && a17 <= 8) && a28 <= 10) && 8 < a28)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && a17 == 8) && a11 == 0) && a28 <= 7)) || ((a28 <= 9 && a11 == 1) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 9) && a17 <= 8)) || (((((a19 <= 0 && a21 == 1) && a17 == 8) && a25 == 1) && a11 == 0) && a28 == 10)) || (a19 <= 0 && a11 == 1)) || ((a25 == 1 && a11 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.9s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 785 SDtfs, 970 SDslu, 106 SDs, 0 SdLazy, 3840 SolverSat, 726 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2207 GetRequests, 1974 SyntacticMatches, 188 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1843occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 1122 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 69 NumberOfFragments, 223 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2194 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 396 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2418 NumberOfCodeBlocks, 2418 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3368 ConstructedInterpolants, 0 QuantifiedInterpolants, 1388874 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2320 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 1920/2106 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...