./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.02.cil.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_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/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 5c6676c90977e408adf03f66d7ae0804453cb34e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:07:48,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:07:48,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:07:48,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:07:48,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:07:48,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:07:48,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:07:48,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:07:48,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:07:48,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:07:48,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:07:48,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:07:48,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:07:48,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:07:48,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:07:48,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:07:48,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:07:48,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:07:48,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:07:48,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:07:48,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:07:48,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:07:48,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:07:48,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:07:48,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:07:48,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:07:48,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:07:48,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:07:48,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:07:48,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:07:48,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:07:48,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:07:48,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:07:48,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:07:48,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:07:48,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:07:48,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:07:48,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:07:48,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:07:48,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:07:48,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:07:48,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 14:07:48,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:07:48,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:07:48,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:07:48,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:07:48,778 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:07:48,779 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:07:48,779 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:07:48,779 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:07:48,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:07:48,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:07:48,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:07:48,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:07:48,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:07:48,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:07:48,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:07:48,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:07:48,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:07:48,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:07:48,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:07:48,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:07:48,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:07:48,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:07:48,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:07:48,782 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_76404ad7-bbe0-44b9-8064-13d908a5140f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6676c90977e408adf03f66d7ae0804453cb34e [2020-12-09 14:07:48,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:07:48,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:07:48,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:07:48,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:07:48,977 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:07:48,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/../../sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-12-09 14:07:49,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/data/024020e9e/baf69482cbca4dbc9c8acf3ad78655cf/FLAGae0e27f90 [2020-12-09 14:07:49,395 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:07:49,396 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-12-09 14:07:49,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/data/024020e9e/baf69482cbca4dbc9c8acf3ad78655cf/FLAGae0e27f90 [2020-12-09 14:07:49,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/data/024020e9e/baf69482cbca4dbc9c8acf3ad78655cf [2020-12-09 14:07:49,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:07:49,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:07:49,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:07:49,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:07:49,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:07:49,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45277dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49, skipping insertion in model container [2020-12-09 14:07:49,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:07:49,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:07:49,542 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_76404ad7-bbe0-44b9-8064-13d908a5140f/sv-benchmarks/c/systemc/transmitter.02.cil.c[401,414] [2020-12-09 14:07:49,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:07:49,584 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:07:49,593 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_76404ad7-bbe0-44b9-8064-13d908a5140f/sv-benchmarks/c/systemc/transmitter.02.cil.c[401,414] [2020-12-09 14:07:49,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:07:49,629 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:07:49,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49 WrapperNode [2020-12-09 14:07:49,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:07:49,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:07:49,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:07:49,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:07:49,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:07:49,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:07:49,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:07:49,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:07:49,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... [2020-12-09 14:07:49,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:07:49,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:07:49,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:07:49,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:07:49,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/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 14:07:49,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:07:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:07:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:07:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:07:50,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:07:50,667 INFO L299 CfgBuilder]: Removed 94 assume(true) statements. [2020-12-09 14:07:50,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:07:50 BoogieIcfgContainer [2020-12-09 14:07:50,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:07:50,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:07:50,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:07:50,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:07:50,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:07:49" (1/3) ... [2020-12-09 14:07:50,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f65c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:07:50, skipping insertion in model container [2020-12-09 14:07:50,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:07:49" (2/3) ... [2020-12-09 14:07:50,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f65c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:07:50, skipping insertion in model container [2020-12-09 14:07:50,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:07:50" (3/3) ... [2020-12-09 14:07:50,675 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-12-09 14:07:50,685 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:07:50,687 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 14:07:50,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 14:07:50,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:07:50,712 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:07:50,712 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:07:50,712 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:07:50,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:07:50,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:07:50,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:07:50,713 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:07:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-09 14:07:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 14:07:50,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:50,727 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] [2020-12-09 14:07:50,727 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:50,731 INFO L82 PathProgramCache]: Analyzing trace with hash -614020527, now seen corresponding path program 1 times [2020-12-09 14:07:50,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:50,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718865354] [2020-12-09 14:07:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:50,859 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 14:07:50,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718865354] [2020-12-09 14:07:50,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:50,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:50,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358448756] [2020-12-09 14:07:50,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:07:50,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:50,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:07:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:50,880 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-12-09 14:07:51,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:51,003 INFO L93 Difference]: Finished difference Result 295 states and 453 transitions. [2020-12-09 14:07:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:07:51,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 14:07:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:51,017 INFO L225 Difference]: With dead ends: 295 [2020-12-09 14:07:51,017 INFO L226 Difference]: Without dead ends: 203 [2020-12-09 14:07:51,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:07:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-09 14:07:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 179. [2020-12-09 14:07:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-09 14:07:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2020-12-09 14:07:51,064 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 20 [2020-12-09 14:07:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:51,064 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2020-12-09 14:07:51,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:07:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2020-12-09 14:07:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 14:07:51,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:51,065 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] [2020-12-09 14:07:51,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:07:51,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:51,067 INFO L82 PathProgramCache]: Analyzing trace with hash 562583792, now seen corresponding path program 1 times [2020-12-09 14:07:51,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:51,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141297611] [2020-12-09 14:07:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:51,137 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 14:07:51,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141297611] [2020-12-09 14:07:51,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:51,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:51,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439330348] [2020-12-09 14:07:51,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:07:51,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:51,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:07:51,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:51,140 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand 4 states. [2020-12-09 14:07:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:51,222 INFO L93 Difference]: Finished difference Result 524 states and 764 transitions. [2020-12-09 14:07:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:07:51,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 14:07:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:51,225 INFO L225 Difference]: With dead ends: 524 [2020-12-09 14:07:51,225 INFO L226 Difference]: Without dead ends: 356 [2020-12-09 14:07:51,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-12-09 14:07:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 272. [2020-12-09 14:07:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-12-09 14:07:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 395 transitions. [2020-12-09 14:07:51,246 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 395 transitions. Word has length 20 [2020-12-09 14:07:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:51,246 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 395 transitions. [2020-12-09 14:07:51,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:07:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 395 transitions. [2020-12-09 14:07:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 14:07:51,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:51,247 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] [2020-12-09 14:07:51,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:07:51,248 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:51,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1698088827, now seen corresponding path program 1 times [2020-12-09 14:07:51,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:51,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220203687] [2020-12-09 14:07:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:51,292 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 14:07:51,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220203687] [2020-12-09 14:07:51,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:51,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:51,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397291166] [2020-12-09 14:07:51,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:07:51,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:07:51,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:51,294 INFO L87 Difference]: Start difference. First operand 272 states and 395 transitions. Second operand 4 states. [2020-12-09 14:07:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:51,369 INFO L93 Difference]: Finished difference Result 837 states and 1229 transitions. [2020-12-09 14:07:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:07:51,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-09 14:07:51,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:51,378 INFO L225 Difference]: With dead ends: 837 [2020-12-09 14:07:51,378 INFO L226 Difference]: Without dead ends: 576 [2020-12-09 14:07:51,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-12-09 14:07:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 453. [2020-12-09 14:07:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-12-09 14:07:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 657 transitions. [2020-12-09 14:07:51,405 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 657 transitions. Word has length 21 [2020-12-09 14:07:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:51,405 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 657 transitions. [2020-12-09 14:07:51,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:07:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 657 transitions. [2020-12-09 14:07:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 14:07:51,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:51,406 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] [2020-12-09 14:07:51,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 14:07:51,406 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:51,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:51,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1311709923, now seen corresponding path program 1 times [2020-12-09 14:07:51,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:51,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631641101] [2020-12-09 14:07:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:51,446 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 14:07:51,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631641101] [2020-12-09 14:07:51,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:51,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:07:51,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136479776] [2020-12-09 14:07:51,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:51,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:51,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:51,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:51,448 INFO L87 Difference]: Start difference. First operand 453 states and 657 transitions. Second operand 3 states. [2020-12-09 14:07:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:51,496 INFO L93 Difference]: Finished difference Result 1304 states and 1880 transitions. [2020-12-09 14:07:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:51,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-09 14:07:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:51,500 INFO L225 Difference]: With dead ends: 1304 [2020-12-09 14:07:51,501 INFO L226 Difference]: Without dead ends: 859 [2020-12-09 14:07:51,502 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 14:07:51,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-12-09 14:07:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 850. [2020-12-09 14:07:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-12-09 14:07:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1189 transitions. [2020-12-09 14:07:51,532 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1189 transitions. Word has length 22 [2020-12-09 14:07:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:51,533 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1189 transitions. [2020-12-09 14:07:51,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1189 transitions. [2020-12-09 14:07:51,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 14:07:51,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:51,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:07:51,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 14:07:51,535 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:51,536 INFO L82 PathProgramCache]: Analyzing trace with hash -536439752, now seen corresponding path program 1 times [2020-12-09 14:07:51,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:51,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99097230] [2020-12-09 14:07:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:51,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99097230] [2020-12-09 14:07:51,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:51,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:51,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571431875] [2020-12-09 14:07:51,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:51,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:51,573 INFO L87 Difference]: Start difference. First operand 850 states and 1189 transitions. Second operand 3 states. [2020-12-09 14:07:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:51,641 INFO L93 Difference]: Finished difference Result 1558 states and 2224 transitions. [2020-12-09 14:07:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:51,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-09 14:07:51,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:51,655 INFO L225 Difference]: With dead ends: 1558 [2020-12-09 14:07:51,655 INFO L226 Difference]: Without dead ends: 1116 [2020-12-09 14:07:51,656 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 14:07:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2020-12-09 14:07:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 927. [2020-12-09 14:07:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-12-09 14:07:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1307 transitions. [2020-12-09 14:07:51,699 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1307 transitions. Word has length 32 [2020-12-09 14:07:51,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:51,699 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1307 transitions. [2020-12-09 14:07:51,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1307 transitions. [2020-12-09 14:07:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-09 14:07:51,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:51,702 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 14:07:51,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 14:07:51,703 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash 392747346, now seen corresponding path program 1 times [2020-12-09 14:07:51,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:51,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80231133] [2020-12-09 14:07:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:07:51,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80231133] [2020-12-09 14:07:51,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:51,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:51,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778355473] [2020-12-09 14:07:51,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:07:51,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:51,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:07:51,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:51,761 INFO L87 Difference]: Start difference. First operand 927 states and 1307 transitions. Second operand 4 states. [2020-12-09 14:07:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:51,835 INFO L93 Difference]: Finished difference Result 1868 states and 2694 transitions. [2020-12-09 14:07:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:07:51,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-09 14:07:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:51,841 INFO L225 Difference]: With dead ends: 1868 [2020-12-09 14:07:51,841 INFO L226 Difference]: Without dead ends: 1349 [2020-12-09 14:07:51,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-12-09 14:07:51,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 927. [2020-12-09 14:07:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-12-09 14:07:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1294 transitions. [2020-12-09 14:07:51,880 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1294 transitions. Word has length 44 [2020-12-09 14:07:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:51,880 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1294 transitions. [2020-12-09 14:07:51,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:07:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1294 transitions. [2020-12-09 14:07:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-09 14:07:51,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:51,883 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 14:07:51,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 14:07:51,883 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash -480091309, now seen corresponding path program 1 times [2020-12-09 14:07:51,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:51,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511660618] [2020-12-09 14:07:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:51,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511660618] [2020-12-09 14:07:51,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:51,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:51,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059774879] [2020-12-09 14:07:51,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:51,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:51,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:51,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:51,937 INFO L87 Difference]: Start difference. First operand 927 states and 1294 transitions. Second operand 3 states. [2020-12-09 14:07:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:51,986 INFO L93 Difference]: Finished difference Result 1446 states and 2043 transitions. [2020-12-09 14:07:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:51,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-09 14:07:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:51,990 INFO L225 Difference]: With dead ends: 1446 [2020-12-09 14:07:51,990 INFO L226 Difference]: Without dead ends: 927 [2020-12-09 14:07:51,991 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 14:07:51,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-12-09 14:07:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 911. [2020-12-09 14:07:52,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-12-09 14:07:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1236 transitions. [2020-12-09 14:07:52,025 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1236 transitions. Word has length 44 [2020-12-09 14:07:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:52,025 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1236 transitions. [2020-12-09 14:07:52,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:52,025 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1236 transitions. [2020-12-09 14:07:52,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-09 14:07:52,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:52,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:07:52,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 14:07:52,027 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:52,027 INFO L82 PathProgramCache]: Analyzing trace with hash -750762566, now seen corresponding path program 1 times [2020-12-09 14:07:52,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:52,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879096093] [2020-12-09 14:07:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:52,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879096093] [2020-12-09 14:07:52,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:52,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:07:52,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470512255] [2020-12-09 14:07:52,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:07:52,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:52,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:07:52,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:52,074 INFO L87 Difference]: Start difference. First operand 911 states and 1236 transitions. Second operand 4 states. [2020-12-09 14:07:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:52,182 INFO L93 Difference]: Finished difference Result 1872 states and 2528 transitions. [2020-12-09 14:07:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:07:52,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-09 14:07:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:52,190 INFO L225 Difference]: With dead ends: 1872 [2020-12-09 14:07:52,190 INFO L226 Difference]: Without dead ends: 1455 [2020-12-09 14:07:52,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:07:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-12-09 14:07:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1238. [2020-12-09 14:07:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-12-09 14:07:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1652 transitions. [2020-12-09 14:07:52,248 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1652 transitions. Word has length 45 [2020-12-09 14:07:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:52,249 INFO L481 AbstractCegarLoop]: Abstraction has 1238 states and 1652 transitions. [2020-12-09 14:07:52,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:07:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1652 transitions. [2020-12-09 14:07:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-09 14:07:52,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:52,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:07:52,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 14:07:52,252 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:52,252 INFO L82 PathProgramCache]: Analyzing trace with hash 687169780, now seen corresponding path program 1 times [2020-12-09 14:07:52,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:52,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080519682] [2020-12-09 14:07:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:52,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080519682] [2020-12-09 14:07:52,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:52,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:52,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131583304] [2020-12-09 14:07:52,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:52,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:52,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:52,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:52,288 INFO L87 Difference]: Start difference. First operand 1238 states and 1652 transitions. Second operand 3 states. [2020-12-09 14:07:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:52,347 INFO L93 Difference]: Finished difference Result 2509 states and 3383 transitions. [2020-12-09 14:07:52,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:52,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-09 14:07:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:52,353 INFO L225 Difference]: With dead ends: 2509 [2020-12-09 14:07:52,353 INFO L226 Difference]: Without dead ends: 1391 [2020-12-09 14:07:52,355 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 14:07:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-12-09 14:07:52,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1288. [2020-12-09 14:07:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-12-09 14:07:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1728 transitions. [2020-12-09 14:07:52,400 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1728 transitions. Word has length 46 [2020-12-09 14:07:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:52,400 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1728 transitions. [2020-12-09 14:07:52,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1728 transitions. [2020-12-09 14:07:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-09 14:07:52,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:52,402 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:07:52,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 14:07:52,402 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:52,403 INFO L82 PathProgramCache]: Analyzing trace with hash 74336202, now seen corresponding path program 1 times [2020-12-09 14:07:52,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:52,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910776007] [2020-12-09 14:07:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 14:07:52,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910776007] [2020-12-09 14:07:52,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199894306] [2020-12-09 14:07:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/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 14:07:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:52,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 14:07:52,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:07:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:52,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:07:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:52,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:07:52,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2020-12-09 14:07:52,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41210256] [2020-12-09 14:07:52,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:07:52,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:52,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:07:52,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:07:52,622 INFO L87 Difference]: Start difference. First operand 1288 states and 1728 transitions. Second operand 5 states. [2020-12-09 14:07:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:52,743 INFO L93 Difference]: Finished difference Result 2627 states and 3592 transitions. [2020-12-09 14:07:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 14:07:52,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-12-09 14:07:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:52,749 INFO L225 Difference]: With dead ends: 2627 [2020-12-09 14:07:52,750 INFO L226 Difference]: Without dead ends: 1349 [2020-12-09 14:07:52,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:07:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-12-09 14:07:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 876. [2020-12-09 14:07:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-12-09 14:07:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1196 transitions. [2020-12-09 14:07:52,796 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1196 transitions. Word has length 48 [2020-12-09 14:07:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:52,796 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 1196 transitions. [2020-12-09 14:07:52,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:07:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1196 transitions. [2020-12-09 14:07:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-09 14:07:52,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:52,798 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:07:52,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 14:07:52,999 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:52,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:52,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1432313062, now seen corresponding path program 1 times [2020-12-09 14:07:52,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:52,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810255306] [2020-12-09 14:07:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 14:07:53,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810255306] [2020-12-09 14:07:53,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:53,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:07:53,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447057432] [2020-12-09 14:07:53,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:53,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:53,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:53,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:53,039 INFO L87 Difference]: Start difference. First operand 876 states and 1196 transitions. Second operand 3 states. [2020-12-09 14:07:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:53,113 INFO L93 Difference]: Finished difference Result 1889 states and 2553 transitions. [2020-12-09 14:07:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:53,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-09 14:07:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:53,118 INFO L225 Difference]: With dead ends: 1889 [2020-12-09 14:07:53,119 INFO L226 Difference]: Without dead ends: 1043 [2020-12-09 14:07:53,120 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 14:07:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-09 14:07:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 917. [2020-12-09 14:07:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-12-09 14:07:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1241 transitions. [2020-12-09 14:07:53,172 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1241 transitions. Word has length 57 [2020-12-09 14:07:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:53,172 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1241 transitions. [2020-12-09 14:07:53,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1241 transitions. [2020-12-09 14:07:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-09 14:07:53,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:53,175 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-09 14:07:53,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 14:07:53,175 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash 326774667, now seen corresponding path program 1 times [2020-12-09 14:07:53,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:53,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989524600] [2020-12-09 14:07:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:53,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989524600] [2020-12-09 14:07:53,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:53,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:07:53,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668961631] [2020-12-09 14:07:53,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:07:53,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:07:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:07:53,230 INFO L87 Difference]: Start difference. First operand 917 states and 1241 transitions. Second operand 5 states. [2020-12-09 14:07:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:53,359 INFO L93 Difference]: Finished difference Result 1750 states and 2351 transitions. [2020-12-09 14:07:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 14:07:53,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-12-09 14:07:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:53,364 INFO L225 Difference]: With dead ends: 1750 [2020-12-09 14:07:53,364 INFO L226 Difference]: Without dead ends: 886 [2020-12-09 14:07:53,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:07:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-12-09 14:07:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 753. [2020-12-09 14:07:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-12-09 14:07:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1025 transitions. [2020-12-09 14:07:53,402 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1025 transitions. Word has length 59 [2020-12-09 14:07:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:53,402 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1025 transitions. [2020-12-09 14:07:53,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:07:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1025 transitions. [2020-12-09 14:07:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-09 14:07:53,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:53,404 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 14:07:53,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 14:07:53,404 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:53,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1876763817, now seen corresponding path program 1 times [2020-12-09 14:07:53,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:53,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814210513] [2020-12-09 14:07:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:07:53,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814210513] [2020-12-09 14:07:53,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:53,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:53,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707203906] [2020-12-09 14:07:53,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:53,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:53,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:53,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:53,435 INFO L87 Difference]: Start difference. First operand 753 states and 1025 transitions. Second operand 3 states. [2020-12-09 14:07:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:53,496 INFO L93 Difference]: Finished difference Result 1251 states and 1717 transitions. [2020-12-09 14:07:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:53,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-09 14:07:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:53,500 INFO L225 Difference]: With dead ends: 1251 [2020-12-09 14:07:53,500 INFO L226 Difference]: Without dead ends: 551 [2020-12-09 14:07:53,501 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 14:07:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-12-09 14:07:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 547. [2020-12-09 14:07:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-12-09 14:07:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 723 transitions. [2020-12-09 14:07:53,541 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 723 transitions. Word has length 59 [2020-12-09 14:07:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:53,541 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 723 transitions. [2020-12-09 14:07:53,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 723 transitions. [2020-12-09 14:07:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-09 14:07:53,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:53,543 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 14:07:53,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 14:07:53,543 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash -588569288, now seen corresponding path program 1 times [2020-12-09 14:07:53,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:53,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411704485] [2020-12-09 14:07:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:07:53,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411704485] [2020-12-09 14:07:53,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:53,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:53,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461559791] [2020-12-09 14:07:53,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:53,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:53,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:53,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:53,580 INFO L87 Difference]: Start difference. First operand 547 states and 723 transitions. Second operand 3 states. [2020-12-09 14:07:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:53,633 INFO L93 Difference]: Finished difference Result 968 states and 1284 transitions. [2020-12-09 14:07:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:53,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-09 14:07:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:53,636 INFO L225 Difference]: With dead ends: 968 [2020-12-09 14:07:53,636 INFO L226 Difference]: Without dead ends: 547 [2020-12-09 14:07:53,637 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 14:07:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-12-09 14:07:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2020-12-09 14:07:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-12-09 14:07:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 711 transitions. [2020-12-09 14:07:53,659 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 711 transitions. Word has length 59 [2020-12-09 14:07:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:53,659 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 711 transitions. [2020-12-09 14:07:53,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:53,659 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 711 transitions. [2020-12-09 14:07:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-09 14:07:53,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:53,660 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 14:07:53,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 14:07:53,661 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:53,661 INFO L82 PathProgramCache]: Analyzing trace with hash 973812578, now seen corresponding path program 1 times [2020-12-09 14:07:53,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:53,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302002077] [2020-12-09 14:07:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-09 14:07:53,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302002077] [2020-12-09 14:07:53,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:53,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:07:53,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636140087] [2020-12-09 14:07:53,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:53,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:53,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:53,694 INFO L87 Difference]: Start difference. First operand 547 states and 711 transitions. Second operand 3 states. [2020-12-09 14:07:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:53,766 INFO L93 Difference]: Finished difference Result 1427 states and 1865 transitions. [2020-12-09 14:07:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:53,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-09 14:07:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:53,771 INFO L225 Difference]: With dead ends: 1427 [2020-12-09 14:07:53,771 INFO L226 Difference]: Without dead ends: 933 [2020-12-09 14:07:53,776 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 14:07:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-12-09 14:07:53,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 929. [2020-12-09 14:07:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-12-09 14:07:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1199 transitions. [2020-12-09 14:07:53,811 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1199 transitions. Word has length 60 [2020-12-09 14:07:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:53,811 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1199 transitions. [2020-12-09 14:07:53,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1199 transitions. [2020-12-09 14:07:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-09 14:07:53,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:53,812 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 14:07:53,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 14:07:53,812 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:53,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2144550399, now seen corresponding path program 1 times [2020-12-09 14:07:53,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:53,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544032015] [2020-12-09 14:07:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:07:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:07:53,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544032015] [2020-12-09 14:07:53,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:07:53,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:07:53,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557568779] [2020-12-09 14:07:53,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:07:53,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:07:53,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:07:53,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:07:53,838 INFO L87 Difference]: Start difference. First operand 929 states and 1199 transitions. Second operand 3 states. [2020-12-09 14:07:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:07:53,892 INFO L93 Difference]: Finished difference Result 1650 states and 2148 transitions. [2020-12-09 14:07:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:07:53,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-09 14:07:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:07:53,896 INFO L225 Difference]: With dead ends: 1650 [2020-12-09 14:07:53,896 INFO L226 Difference]: Without dead ends: 774 [2020-12-09 14:07:53,897 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 14:07:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-12-09 14:07:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 770. [2020-12-09 14:07:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-12-09 14:07:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 949 transitions. [2020-12-09 14:07:53,929 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 949 transitions. Word has length 60 [2020-12-09 14:07:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:07:53,929 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 949 transitions. [2020-12-09 14:07:53,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:07:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 949 transitions. [2020-12-09 14:07:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-09 14:07:53,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:07:53,930 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 14:07:53,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 14:07:53,930 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:07:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:07:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash -536169197, now seen corresponding path program 1 times [2020-12-09 14:07:53,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:07:53,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410880401] [2020-12-09 14:07:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:07:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:07:53,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:07:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:07:53,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:07:53,984 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 14:07:53,984 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 14:07:53,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 14:07:54,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:07:54 BoogieIcfgContainer [2020-12-09 14:07:54,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:07:54,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:07:54,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:07:54,072 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:07:54,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:07:50" (3/4) ... [2020-12-09 14:07:54,074 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 14:07:54,172 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_76404ad7-bbe0-44b9-8064-13d908a5140f/bin/utaipan/witness.graphml [2020-12-09 14:07:54,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:07:54,174 INFO L168 Benchmark]: Toolchain (without parser) took 4755.07 ms. Allocated memory was 98.6 MB in the beginning and 209.7 MB in the end (delta: 111.1 MB). Free memory was 75.6 MB in the beginning and 167.4 MB in the end (delta: -91.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:07:54,174 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 65.0 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:07:54,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.67 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 61.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 14:07:54,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.30 ms. Allocated memory is still 98.6 MB. Free memory was 61.9 MB in the beginning and 59.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:07:54,175 INFO L168 Benchmark]: Boogie Preprocessor took 31.93 ms. Allocated memory is still 98.6 MB. Free memory was 59.1 MB in the beginning and 56.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:07:54,175 INFO L168 Benchmark]: RCFGBuilder took 965.39 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 56.6 MB in the beginning and 57.1 MB in the end (delta: -466.1 kB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:07:54,176 INFO L168 Benchmark]: TraceAbstraction took 3401.11 ms. Allocated memory was 119.5 MB in the beginning and 209.7 MB in the end (delta: 90.2 MB). Free memory was 57.1 MB in the beginning and 177.9 MB in the end (delta: -120.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:07:54,176 INFO L168 Benchmark]: Witness Printer took 100.82 ms. Allocated memory is still 209.7 MB. Free memory was 177.9 MB in the beginning and 167.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:07:54,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 65.0 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 210.67 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 61.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.30 ms. Allocated memory is still 98.6 MB. Free memory was 61.9 MB in the beginning and 59.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.93 ms. Allocated memory is still 98.6 MB. Free memory was 59.1 MB in the beginning and 56.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 965.39 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 56.6 MB in the beginning and 57.1 MB in the end (delta: -466.1 kB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3401.11 ms. Allocated memory was 119.5 MB in the beginning and 209.7 MB in the end (delta: 90.2 MB). Free memory was 57.1 MB in the beginning and 177.9 MB in the end (delta: -120.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. * Witness Printer took 100.82 ms. Allocated memory is still 209.7 MB. Free memory was 177.9 MB in the beginning and 167.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int m_pc = 0; [L18] int t1_pc = 0; [L19] int t2_pc = 0; [L20] int m_st ; [L21] int t1_st ; [L22] int t2_st ; [L23] int m_i ; [L24] int t1_i ; [L25] int t2_i ; [L26] int M_E = 2; [L27] int T1_E = 2; [L28] int T2_E = 2; [L29] int E_1 = 2; [L30] int E_2 = 2; [L565] int __retres1 ; [L479] m_i = 1 [L480] t1_i = 1 [L481] t2_i = 1 [L506] int kernel_st ; [L507] int tmp ; [L508] int tmp___0 ; [L512] kernel_st = 0 [L213] COND TRUE m_i == 1 [L214] m_st = 0 [L218] COND TRUE t1_i == 1 [L219] t1_st = 0 [L223] COND TRUE t2_i == 1 [L224] t2_st = 0 [L326] COND FALSE !(M_E == 0) [L331] COND FALSE !(T1_E == 0) [L336] COND FALSE !(T2_E == 0) [L341] COND FALSE !(E_1 == 0) [L346] COND FALSE !(E_2 == 0) [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L148] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L158] __retres1 = 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L167] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L177] __retres1 = 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L183] int __retres1 ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L186] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L196] __retres1 = 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L359] COND FALSE !(M_E == 1) [L364] COND FALSE !(T1_E == 1) [L369] COND FALSE !(T2_E == 1) [L374] COND FALSE !(E_1 == 1) [L379] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L520] COND TRUE 1 [L523] kernel_st = 1 [L259] int tmp ; VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L263] COND TRUE 1 [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND TRUE \read(tmp_ndt_2) [L292] t1_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L80] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L91] COND TRUE 1 [L93] t1_pc = 1 [L94] t1_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=0] [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1] [L115] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1] [L126] COND TRUE 1 [L128] t2_pc = 1 [L129] t2_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L263] COND TRUE 1 [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp_ndt_1) [L278] m_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L39] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L50] COND TRUE 1 [L53] E_1 = 1 [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L148] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L158] __retres1 = 0 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L167] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L168] COND TRUE E_1 == 1 [L169] __retres1 = 1 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND TRUE \read(tmp___0) [L406] t1_st = 0 [L183] int __retres1 ; VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L186] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L187] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L196] __retres1 = 0 VAL [E_1=1, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L55] E_1 = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L58] COND TRUE 1 [L60] m_pc = 1 [L61] m_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND TRUE \read(tmp_ndt_2) [L292] t1_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L80] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L83] COND TRUE t1_pc == 1 [L99] E_2 = 1 [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L148] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L149] COND FALSE !(M_E == 1) VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L158] __retres1 = 0 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L167] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L168] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L177] __retres1 = 0 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L183] int __retres1 ; VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L186] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L187] COND TRUE E_2 == 1 [L188] __retres1 = 1 VAL [E_1=2, E_2=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND TRUE \read(tmp___1) [L414] t2_st = 0 [L101] E_2 = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0] [L91] COND TRUE 1 [L93] t1_pc = 1 [L94] t1_st = 2 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=0] [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] [L115] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] [L118] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] [L13] reach_error() VAL [E_1=2, E_2=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2269 SDtfs, 1956 SDslu, 2072 SDs, 0 SdLazy, 389 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1288occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 1931 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 805 NumberOfCodeBlocks, 805 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 774 ConstructedInterpolants, 0 QuantifiedInterpolants, 68153 SizeOfPredicates, 6 NumberOfNonLiveVariables, 251 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 170/171 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 incorrect! Received shutdown request...