./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_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/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 [2020-12-03 12:35:44,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:44,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:44,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:44,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:44,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:44,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:44,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:44,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:44,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:44,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:44,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:44,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:44,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:44,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:44,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:44,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:44,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:44,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:44,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:44,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:44,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:44,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:44,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:44,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:44,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:44,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:44,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:44,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:44,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:44,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:44,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:44,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:44,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:44,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:44,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:44,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:44,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:44,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:44,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:44,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:44,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:35:45,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:45,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:45,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:45,010 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:45,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:45,011 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:45,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:45,011 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:45,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:45,012 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:45,013 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:45,013 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:45,013 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:45,014 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:45,014 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:45,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:45,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:45,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:45,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:45,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:45,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:45,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:45,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:45,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:35:45,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:45,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:45,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:45,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:45,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:45,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:45,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:45,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:45,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:45,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:45,019 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:45,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:45,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:45,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:45,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:45,020 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_7803b42c-7ad4-48af-9c9a-bb9d579db56d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6676c90977e408adf03f66d7ae0804453cb34e [2020-12-03 12:35:45,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:45,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:45,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:45,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:45,383 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:45,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/../../sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-12-03 12:35:45,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/data/da175105b/08b40efd2ec149e1ab270deacb5adb6b/FLAG39f181ffc [2020-12-03 12:35:45,976 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:45,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/sv-benchmarks/c/systemc/transmitter.02.cil.c [2020-12-03 12:35:45,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/data/da175105b/08b40efd2ec149e1ab270deacb5adb6b/FLAG39f181ffc [2020-12-03 12:35:46,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/data/da175105b/08b40efd2ec149e1ab270deacb5adb6b [2020-12-03 12:35:46,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:46,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:46,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:46,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:46,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:46,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595ed1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46, skipping insertion in model container [2020-12-03 12:35:46,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:46,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:46,574 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_7803b42c-7ad4-48af-9c9a-bb9d579db56d/sv-benchmarks/c/systemc/transmitter.02.cil.c[401,414] [2020-12-03 12:35:46,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:46,636 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:46,649 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_7803b42c-7ad4-48af-9c9a-bb9d579db56d/sv-benchmarks/c/systemc/transmitter.02.cil.c[401,414] [2020-12-03 12:35:46,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:46,747 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:46,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46 WrapperNode [2020-12-03 12:35:46,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:46,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:46,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:46,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:46,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:46,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:46,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:46,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:46,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... [2020-12-03 12:35:46,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:46,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:46,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:46,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:46,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/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 [2020-12-03 12:35:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:35:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:48,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:48,862 INFO L299 CfgBuilder]: Removed 94 assume(true) statements. [2020-12-03 12:35:48,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:48 BoogieIcfgContainer [2020-12-03 12:35:48,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:48,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:48,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:48,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:48,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:46" (1/3) ... [2020-12-03 12:35:48,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbe5ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:48, skipping insertion in model container [2020-12-03 12:35:48,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:46" (2/3) ... [2020-12-03 12:35:48,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbe5ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:48, skipping insertion in model container [2020-12-03 12:35:48,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:48" (3/3) ... [2020-12-03 12:35:48,878 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-12-03 12:35:48,895 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:48,899 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:35:48,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:35:48,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:48,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:48,949 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:48,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:48,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:48,950 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:48,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:48,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-03 12:35:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-03 12:35:48,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:48,980 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] [2020-12-03 12:35:48,980 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:48,986 INFO L82 PathProgramCache]: Analyzing trace with hash -614020527, now seen corresponding path program 1 times [2020-12-03 12:35:48,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:48,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512754448] [2020-12-03 12:35:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:49,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512754448] [2020-12-03 12:35:49,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:49,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:49,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105484814] [2020-12-03 12:35:49,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:35:49,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:49,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:35:49,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:35:49,198 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-12-03 12:35:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:49,400 INFO L93 Difference]: Finished difference Result 295 states and 453 transitions. [2020-12-03 12:35:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:35:49,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-03 12:35:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:49,416 INFO L225 Difference]: With dead ends: 295 [2020-12-03 12:35:49,416 INFO L226 Difference]: Without dead ends: 203 [2020-12-03 12:35:49,420 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 [2020-12-03 12:35:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-03 12:35:49,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 179. [2020-12-03 12:35:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-03 12:35:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2020-12-03 12:35:49,475 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 20 [2020-12-03 12:35:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:49,475 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2020-12-03 12:35:49,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:35:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2020-12-03 12:35:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-03 12:35:49,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:49,477 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] [2020-12-03 12:35:49,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:35:49,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:49,479 INFO L82 PathProgramCache]: Analyzing trace with hash 562583792, now seen corresponding path program 1 times [2020-12-03 12:35:49,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:49,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823960774] [2020-12-03 12:35:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:49,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823960774] [2020-12-03 12:35:49,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:49,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:49,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706417572] [2020-12-03 12:35:49,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:35:49,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:49,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:35:49,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:35:49,565 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand 4 states. [2020-12-03 12:35:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:49,692 INFO L93 Difference]: Finished difference Result 524 states and 764 transitions. [2020-12-03 12:35:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:35:49,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-03 12:35:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:49,697 INFO L225 Difference]: With dead ends: 524 [2020-12-03 12:35:49,697 INFO L226 Difference]: Without dead ends: 356 [2020-12-03 12:35:49,699 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 [2020-12-03 12:35:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-12-03 12:35:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 272. [2020-12-03 12:35:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-12-03 12:35:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 395 transitions. [2020-12-03 12:35:49,733 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 395 transitions. Word has length 20 [2020-12-03 12:35:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:49,734 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 395 transitions. [2020-12-03 12:35:49,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:35:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 395 transitions. [2020-12-03 12:35:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-03 12:35:49,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:49,737 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] [2020-12-03 12:35:49,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:35:49,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:49,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:49,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1698088827, now seen corresponding path program 1 times [2020-12-03 12:35:49,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:49,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210677379] [2020-12-03 12:35:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:49,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210677379] [2020-12-03 12:35:49,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:49,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:49,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237448639] [2020-12-03 12:35:49,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:35:49,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:49,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:35:49,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:35:49,882 INFO L87 Difference]: Start difference. First operand 272 states and 395 transitions. Second operand 4 states. [2020-12-03 12:35:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,018 INFO L93 Difference]: Finished difference Result 837 states and 1229 transitions. [2020-12-03 12:35:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:35:50,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-03 12:35:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,023 INFO L225 Difference]: With dead ends: 837 [2020-12-03 12:35:50,024 INFO L226 Difference]: Without dead ends: 576 [2020-12-03 12:35:50,029 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 [2020-12-03 12:35:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-12-03 12:35:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 453. [2020-12-03 12:35:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-12-03 12:35:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 657 transitions. [2020-12-03 12:35:50,076 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 657 transitions. Word has length 21 [2020-12-03 12:35:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,077 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 657 transitions. [2020-12-03 12:35:50,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:35:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 657 transitions. [2020-12-03 12:35:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-03 12:35:50,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,079 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] [2020-12-03 12:35:50,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:35:50,079 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1311709923, now seen corresponding path program 1 times [2020-12-03 12:35:50,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165150948] [2020-12-03 12:35:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:50,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165150948] [2020-12-03 12:35:50,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:35:50,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096084331] [2020-12-03 12:35:50,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:50,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:50,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,151 INFO L87 Difference]: Start difference. First operand 453 states and 657 transitions. Second operand 3 states. [2020-12-03 12:35:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,225 INFO L93 Difference]: Finished difference Result 1304 states and 1880 transitions. [2020-12-03 12:35:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:50,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-03 12:35:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,231 INFO L225 Difference]: With dead ends: 1304 [2020-12-03 12:35:50,231 INFO L226 Difference]: Without dead ends: 859 [2020-12-03 12:35:50,233 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 [2020-12-03 12:35:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-12-03 12:35:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 850. [2020-12-03 12:35:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-12-03 12:35:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1189 transitions. [2020-12-03 12:35:50,296 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1189 transitions. Word has length 22 [2020-12-03 12:35:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,297 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1189 transitions. [2020-12-03 12:35:50,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1189 transitions. [2020-12-03 12:35:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-03 12:35:50,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,300 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] [2020-12-03 12:35:50,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-03 12:35:50,301 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,301 INFO L82 PathProgramCache]: Analyzing trace with hash -536439752, now seen corresponding path program 1 times [2020-12-03 12:35:50,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892149069] [2020-12-03 12:35:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:50,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892149069] [2020-12-03 12:35:50,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:50,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458344878] [2020-12-03 12:35:50,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:50,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:50,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,406 INFO L87 Difference]: Start difference. First operand 850 states and 1189 transitions. Second operand 3 states. [2020-12-03 12:35:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,487 INFO L93 Difference]: Finished difference Result 1558 states and 2224 transitions. [2020-12-03 12:35:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:50,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-03 12:35:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,495 INFO L225 Difference]: With dead ends: 1558 [2020-12-03 12:35:50,496 INFO L226 Difference]: Without dead ends: 1116 [2020-12-03 12:35:50,497 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 [2020-12-03 12:35:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2020-12-03 12:35:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 927. [2020-12-03 12:35:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-12-03 12:35:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1307 transitions. [2020-12-03 12:35:50,548 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1307 transitions. Word has length 32 [2020-12-03 12:35:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,549 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1307 transitions. [2020-12-03 12:35:50,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1307 transitions. [2020-12-03 12:35:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-03 12:35:50,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,559 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] [2020-12-03 12:35:50,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-03 12:35:50,560 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,563 INFO L82 PathProgramCache]: Analyzing trace with hash 392747346, now seen corresponding path program 1 times [2020-12-03 12:35:50,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030344437] [2020-12-03 12:35:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:35:50,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030344437] [2020-12-03 12:35:50,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:50,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562621294] [2020-12-03 12:35:50,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:35:50,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:35:50,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:35:50,691 INFO L87 Difference]: Start difference. First operand 927 states and 1307 transitions. Second operand 4 states. [2020-12-03 12:35:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,833 INFO L93 Difference]: Finished difference Result 1868 states and 2694 transitions. [2020-12-03 12:35:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:35:50,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-03 12:35:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,842 INFO L225 Difference]: With dead ends: 1868 [2020-12-03 12:35:50,842 INFO L226 Difference]: Without dead ends: 1349 [2020-12-03 12:35:50,844 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 [2020-12-03 12:35:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-12-03 12:35:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 927. [2020-12-03 12:35:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-12-03 12:35:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1294 transitions. [2020-12-03 12:35:50,918 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1294 transitions. Word has length 44 [2020-12-03 12:35:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,922 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1294 transitions. [2020-12-03 12:35:50,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:35:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1294 transitions. [2020-12-03 12:35:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-03 12:35:50,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,925 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] [2020-12-03 12:35:50,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-03 12:35:50,926 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:50,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,927 INFO L82 PathProgramCache]: Analyzing trace with hash -480091309, now seen corresponding path program 1 times [2020-12-03 12:35:50,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127260559] [2020-12-03 12:35:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:51,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127260559] [2020-12-03 12:35:51,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:51,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:51,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137941706] [2020-12-03 12:35:51,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:51,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:51,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:51,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:51,018 INFO L87 Difference]: Start difference. First operand 927 states and 1294 transitions. Second operand 3 states. [2020-12-03 12:35:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:51,103 INFO L93 Difference]: Finished difference Result 1446 states and 2043 transitions. [2020-12-03 12:35:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:51,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-03 12:35:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:51,110 INFO L225 Difference]: With dead ends: 1446 [2020-12-03 12:35:51,110 INFO L226 Difference]: Without dead ends: 927 [2020-12-03 12:35:51,111 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 [2020-12-03 12:35:51,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-12-03 12:35:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 911. [2020-12-03 12:35:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-12-03 12:35:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1236 transitions. [2020-12-03 12:35:51,166 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1236 transitions. Word has length 44 [2020-12-03 12:35:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:51,166 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1236 transitions. [2020-12-03 12:35:51,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1236 transitions. [2020-12-03 12:35:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-03 12:35:51,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:51,169 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] [2020-12-03 12:35:51,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-03 12:35:51,169 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:51,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash -750762566, now seen corresponding path program 1 times [2020-12-03 12:35:51,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:51,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496041916] [2020-12-03 12:35:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:51,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496041916] [2020-12-03 12:35:51,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:51,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:35:51,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926151792] [2020-12-03 12:35:51,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:35:51,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:51,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:35:51,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:35:51,257 INFO L87 Difference]: Start difference. First operand 911 states and 1236 transitions. Second operand 4 states. [2020-12-03 12:35:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:51,429 INFO L93 Difference]: Finished difference Result 1872 states and 2528 transitions. [2020-12-03 12:35:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:35:51,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-03 12:35:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:51,437 INFO L225 Difference]: With dead ends: 1872 [2020-12-03 12:35:51,438 INFO L226 Difference]: Without dead ends: 1455 [2020-12-03 12:35:51,439 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 [2020-12-03 12:35:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-12-03 12:35:51,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1238. [2020-12-03 12:35:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-12-03 12:35:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1652 transitions. [2020-12-03 12:35:51,508 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1652 transitions. Word has length 45 [2020-12-03 12:35:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:51,510 INFO L481 AbstractCegarLoop]: Abstraction has 1238 states and 1652 transitions. [2020-12-03 12:35:51,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:35:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1652 transitions. [2020-12-03 12:35:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-03 12:35:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:51,514 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] [2020-12-03 12:35:51,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-03 12:35:51,516 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash 687169780, now seen corresponding path program 1 times [2020-12-03 12:35:51,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:51,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663563741] [2020-12-03 12:35:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:51,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663563741] [2020-12-03 12:35:51,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:51,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:51,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656181326] [2020-12-03 12:35:51,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:51,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:51,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:51,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:51,585 INFO L87 Difference]: Start difference. First operand 1238 states and 1652 transitions. Second operand 3 states. [2020-12-03 12:35:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:51,689 INFO L93 Difference]: Finished difference Result 2509 states and 3383 transitions. [2020-12-03 12:35:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:51,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-03 12:35:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:51,698 INFO L225 Difference]: With dead ends: 2509 [2020-12-03 12:35:51,698 INFO L226 Difference]: Without dead ends: 1391 [2020-12-03 12:35:51,700 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 [2020-12-03 12:35:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-12-03 12:35:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1288. [2020-12-03 12:35:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-12-03 12:35:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1728 transitions. [2020-12-03 12:35:51,795 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1728 transitions. Word has length 46 [2020-12-03 12:35:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:51,796 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1728 transitions. [2020-12-03 12:35:51,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1728 transitions. [2020-12-03 12:35:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-03 12:35:51,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:51,798 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] [2020-12-03 12:35:51,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-03 12:35:51,799 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:51,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:51,799 INFO L82 PathProgramCache]: Analyzing trace with hash 74336202, now seen corresponding path program 1 times [2020-12-03 12:35:51,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:51,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892090164] [2020-12-03 12:35:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:35:51,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892090164] [2020-12-03 12:35:51,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592010495] [2020-12-03 12:35:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/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 [2020-12-03 12:35:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:52,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-03 12:35:52,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:35:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:52,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:35:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:52,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-03 12:35:52,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2020-12-03 12:35:52,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264124522] [2020-12-03 12:35:52,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:35:52,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:52,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:35:52,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:35:52,224 INFO L87 Difference]: Start difference. First operand 1288 states and 1728 transitions. Second operand 5 states. [2020-12-03 12:35:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:52,402 INFO L93 Difference]: Finished difference Result 2627 states and 3592 transitions. [2020-12-03 12:35:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:35:52,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-12-03 12:35:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:52,410 INFO L225 Difference]: With dead ends: 2627 [2020-12-03 12:35:52,410 INFO L226 Difference]: Without dead ends: 1349 [2020-12-03 12:35:52,415 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 [2020-12-03 12:35:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-12-03 12:35:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 876. [2020-12-03 12:35:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-12-03 12:35:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1196 transitions. [2020-12-03 12:35:52,486 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1196 transitions. Word has length 48 [2020-12-03 12:35:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:52,486 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 1196 transitions. [2020-12-03 12:35:52,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:35:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1196 transitions. [2020-12-03 12:35:52,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-03 12:35:52,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:52,489 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] [2020-12-03 12:35:52,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-03 12:35:52,712 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:52,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:52,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1432313062, now seen corresponding path program 1 times [2020-12-03 12:35:52,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:52,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179708397] [2020-12-03 12:35:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-03 12:35:52,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179708397] [2020-12-03 12:35:52,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:52,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:35:52,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008720936] [2020-12-03 12:35:52,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:52,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:52,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:52,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:52,784 INFO L87 Difference]: Start difference. First operand 876 states and 1196 transitions. Second operand 3 states. [2020-12-03 12:35:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:52,868 INFO L93 Difference]: Finished difference Result 1889 states and 2553 transitions. [2020-12-03 12:35:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:52,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-03 12:35:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:52,874 INFO L225 Difference]: With dead ends: 1889 [2020-12-03 12:35:52,875 INFO L226 Difference]: Without dead ends: 1043 [2020-12-03 12:35:52,876 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 [2020-12-03 12:35:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-03 12:35:52,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 917. [2020-12-03 12:35:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-12-03 12:35:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1241 transitions. [2020-12-03 12:35:52,966 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1241 transitions. Word has length 57 [2020-12-03 12:35:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:52,967 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1241 transitions. [2020-12-03 12:35:52,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1241 transitions. [2020-12-03 12:35:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-03 12:35:52,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:52,970 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] [2020-12-03 12:35:52,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-03 12:35:52,971 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:52,972 INFO L82 PathProgramCache]: Analyzing trace with hash 326774667, now seen corresponding path program 1 times [2020-12-03 12:35:52,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:52,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822870690] [2020-12-03 12:35:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:53,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822870690] [2020-12-03 12:35:53,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:53,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:35:53,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081247364] [2020-12-03 12:35:53,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:35:53,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:53,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:35:53,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:35:53,038 INFO L87 Difference]: Start difference. First operand 917 states and 1241 transitions. Second operand 5 states. [2020-12-03 12:35:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:53,199 INFO L93 Difference]: Finished difference Result 1750 states and 2351 transitions. [2020-12-03 12:35:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:35:53,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-12-03 12:35:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:53,204 INFO L225 Difference]: With dead ends: 1750 [2020-12-03 12:35:53,205 INFO L226 Difference]: Without dead ends: 886 [2020-12-03 12:35:53,206 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 [2020-12-03 12:35:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-12-03 12:35:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 753. [2020-12-03 12:35:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-12-03 12:35:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1025 transitions. [2020-12-03 12:35:53,254 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1025 transitions. Word has length 59 [2020-12-03 12:35:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:53,255 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1025 transitions. [2020-12-03 12:35:53,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:35:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1025 transitions. [2020-12-03 12:35:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-03 12:35:53,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:53,257 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] [2020-12-03 12:35:53,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-03 12:35:53,258 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1876763817, now seen corresponding path program 1 times [2020-12-03 12:35:53,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:53,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348542498] [2020-12-03 12:35:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:53,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348542498] [2020-12-03 12:35:53,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:53,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:53,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017043645] [2020-12-03 12:35:53,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:53,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:53,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:53,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:53,334 INFO L87 Difference]: Start difference. First operand 753 states and 1025 transitions. Second operand 3 states. [2020-12-03 12:35:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:53,388 INFO L93 Difference]: Finished difference Result 1251 states and 1717 transitions. [2020-12-03 12:35:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:53,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-03 12:35:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:53,392 INFO L225 Difference]: With dead ends: 1251 [2020-12-03 12:35:53,392 INFO L226 Difference]: Without dead ends: 551 [2020-12-03 12:35:53,394 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 [2020-12-03 12:35:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-12-03 12:35:53,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 547. [2020-12-03 12:35:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-12-03 12:35:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 723 transitions. [2020-12-03 12:35:53,438 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 723 transitions. Word has length 59 [2020-12-03 12:35:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:53,438 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 723 transitions. [2020-12-03 12:35:53,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 723 transitions. [2020-12-03 12:35:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-03 12:35:53,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:53,440 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] [2020-12-03 12:35:53,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-03 12:35:53,440 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:53,441 INFO L82 PathProgramCache]: Analyzing trace with hash -588569288, now seen corresponding path program 1 times [2020-12-03 12:35:53,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:53,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926469720] [2020-12-03 12:35:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:35:53,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926469720] [2020-12-03 12:35:53,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:53,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:53,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298581693] [2020-12-03 12:35:53,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:53,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:53,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:53,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:53,497 INFO L87 Difference]: Start difference. First operand 547 states and 723 transitions. Second operand 3 states. [2020-12-03 12:35:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:53,560 INFO L93 Difference]: Finished difference Result 968 states and 1284 transitions. [2020-12-03 12:35:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:53,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-03 12:35:53,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:53,564 INFO L225 Difference]: With dead ends: 968 [2020-12-03 12:35:53,564 INFO L226 Difference]: Without dead ends: 547 [2020-12-03 12:35:53,565 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 [2020-12-03 12:35:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-12-03 12:35:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2020-12-03 12:35:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-12-03 12:35:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 711 transitions. [2020-12-03 12:35:53,605 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 711 transitions. Word has length 59 [2020-12-03 12:35:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:53,605 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 711 transitions. [2020-12-03 12:35:53,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 711 transitions. [2020-12-03 12:35:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-03 12:35:53,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:53,607 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] [2020-12-03 12:35:53,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-03 12:35:53,608 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:53,608 INFO L82 PathProgramCache]: Analyzing trace with hash 973812578, now seen corresponding path program 1 times [2020-12-03 12:35:53,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:53,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746850577] [2020-12-03 12:35:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-03 12:35:53,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746850577] [2020-12-03 12:35:53,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:53,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:35:53,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944501313] [2020-12-03 12:35:53,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:53,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:53,670 INFO L87 Difference]: Start difference. First operand 547 states and 711 transitions. Second operand 3 states. [2020-12-03 12:35:53,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:53,765 INFO L93 Difference]: Finished difference Result 1427 states and 1865 transitions. [2020-12-03 12:35:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:53,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-03 12:35:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:53,771 INFO L225 Difference]: With dead ends: 1427 [2020-12-03 12:35:53,771 INFO L226 Difference]: Without dead ends: 933 [2020-12-03 12:35:53,774 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 [2020-12-03 12:35:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-12-03 12:35:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 929. [2020-12-03 12:35:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-12-03 12:35:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1199 transitions. [2020-12-03 12:35:53,860 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1199 transitions. Word has length 60 [2020-12-03 12:35:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:53,861 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1199 transitions. [2020-12-03 12:35:53,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1199 transitions. [2020-12-03 12:35:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-03 12:35:53,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:53,868 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] [2020-12-03 12:35:53,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-03 12:35:53,869 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:53,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:53,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2144550399, now seen corresponding path program 1 times [2020-12-03 12:35:53,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:53,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948945611] [2020-12-03 12:35:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:35:53,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948945611] [2020-12-03 12:35:53,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:53,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:53,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558002440] [2020-12-03 12:35:53,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:53,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:53,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:53,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:53,915 INFO L87 Difference]: Start difference. First operand 929 states and 1199 transitions. Second operand 3 states. [2020-12-03 12:35:53,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:53,985 INFO L93 Difference]: Finished difference Result 1650 states and 2148 transitions. [2020-12-03 12:35:53,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:53,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-03 12:35:53,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:53,990 INFO L225 Difference]: With dead ends: 1650 [2020-12-03 12:35:53,990 INFO L226 Difference]: Without dead ends: 774 [2020-12-03 12:35:53,992 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 [2020-12-03 12:35:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-12-03 12:35:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 770. [2020-12-03 12:35:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-12-03 12:35:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 949 transitions. [2020-12-03 12:35:54,046 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 949 transitions. Word has length 60 [2020-12-03 12:35:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:54,046 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 949 transitions. [2020-12-03 12:35:54,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 949 transitions. [2020-12-03 12:35:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-03 12:35:54,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:54,048 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] [2020-12-03 12:35:54,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-03 12:35:54,048 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash -536169197, now seen corresponding path program 1 times [2020-12-03 12:35:54,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:54,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035540511] [2020-12-03 12:35:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:54,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:54,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:54,156 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:35:54,156 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:35:54,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-03 12:35:54,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:54 BoogieIcfgContainer [2020-12-03 12:35:54,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:54,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:54,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:54,297 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:54,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:48" (3/4) ... [2020-12-03 12:35:54,299 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:35:54,393 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7803b42c-7ad4-48af-9c9a-bb9d579db56d/bin/utaipan/witness.graphml [2020-12-03 12:35:54,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:54,398 INFO L168 Benchmark]: Toolchain (without parser) took 8068.53 ms. Allocated memory was 104.9 MB in the beginning and 197.1 MB in the end (delta: 92.3 MB). Free memory was 70.4 MB in the beginning and 73.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:54,399 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:54,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.68 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 78.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:54,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.04 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 75.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:54,401 INFO L168 Benchmark]: Boogie Preprocessor took 58.99 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 73.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:54,401 INFO L168 Benchmark]: RCFGBuilder took 1969.15 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 73.3 MB in the beginning and 100.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:54,401 INFO L168 Benchmark]: TraceAbstraction took 5425.99 ms. Allocated memory was 134.2 MB in the beginning and 197.1 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 85.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 79.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:54,402 INFO L168 Benchmark]: Witness Printer took 100.81 ms. Allocated memory is still 197.1 MB. Free memory was 84.3 MB in the beginning and 73.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:54,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.68 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 78.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.04 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 75.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.99 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 73.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1969.15 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 73.3 MB in the beginning and 100.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5425.99 ms. Allocated memory was 134.2 MB in the beginning and 197.1 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 85.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 79.1 MB. Max. memory is 16.1 GB. * Witness Printer took 100.81 ms. Allocated memory is still 197.1 MB. Free memory was 84.3 MB in the beginning and 73.9 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: 5.2s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 2.0s, 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, 0.6s 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: 0.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 1931 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s 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...