./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.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_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/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 c14635b48a1cad23828e85d86c9c53e48c3a7731 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:43:48,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:43:48,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:43:48,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:43:48,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:43:48,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:43:48,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:43:48,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:43:48,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:43:48,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:43:48,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:43:48,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:43:48,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:43:48,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:43:48,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:43:48,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:43:48,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:43:48,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:43:48,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:43:48,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:43:48,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:43:48,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:43:48,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:43:48,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:43:48,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:43:48,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:43:48,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:43:48,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:43:48,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:43:48,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:43:48,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:43:48,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:43:48,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:43:48,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:43:48,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:43:48,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:43:48,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:43:48,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:43:48,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:43:48,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:43:48,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:43:48,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:43:48,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:43:48,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:43:48,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:43:48,917 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:43:48,917 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:43:48,917 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:43:48,918 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:43:48,918 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:43:48,921 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:43:48,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:43:48,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:43:48,922 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:43:48,922 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:43:48,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:43:48,922 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:43:48,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:43:48,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:43:48,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:43:48,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:43:48,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:43:48,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:43:48,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:43:48,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:43:48,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:43:48,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:43:48,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:43:48,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:43:48,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:43:48,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:43:48,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:43:48,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:43:48,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:43:48,925 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_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c14635b48a1cad23828e85d86c9c53e48c3a7731 [2020-12-09 06:43:49,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:43:49,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:43:49,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:43:49,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:43:49,120 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:43:49,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2020-12-09 06:43:49,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/data/6a445be91/66d2f269dfa844208a3faeefe3b43a52/FLAGaf330d9d3 [2020-12-09 06:43:49,553 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:43:49,553 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2020-12-09 06:43:49,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/data/6a445be91/66d2f269dfa844208a3faeefe3b43a52/FLAGaf330d9d3 [2020-12-09 06:43:49,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/data/6a445be91/66d2f269dfa844208a3faeefe3b43a52 [2020-12-09 06:43:49,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:43:49,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:43:49,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:43:49,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:43:49,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:43:49,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92d75bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49, skipping insertion in model container [2020-12-09 06:43:49,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:43:49,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:43:49,773 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_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2020-12-09 06:43:49,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:43:49,790 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:43:49,837 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_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2020-12-09 06:43:49,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:43:49,852 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:43:49,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49 WrapperNode [2020-12-09 06:43:49,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:43:49,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:43:49,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:43:49,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:43:49,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:43:49,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:43:49,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:43:49,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:43:49,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... [2020-12-09 06:43:49,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:43:49,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:43:49,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:43:49,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:43:49,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:43:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:43:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:43:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:43:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:43:50,102 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:43:50,417 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-12-09 06:43:50,418 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-12-09 06:43:50,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:43:50,787 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:43:50,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:43:50 BoogieIcfgContainer [2020-12-09 06:43:50,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:43:50,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:43:50,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:43:50,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:43:50,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:43:49" (1/3) ... [2020-12-09 06:43:50,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154c23ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:43:50, skipping insertion in model container [2020-12-09 06:43:50,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:43:49" (2/3) ... [2020-12-09 06:43:50,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154c23ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:43:50, skipping insertion in model container [2020-12-09 06:43:50,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:43:50" (3/3) ... [2020-12-09 06:43:50,796 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2020-12-09 06:43:50,809 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:43:50,812 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:43:50,821 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:43:50,839 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:43:50,839 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:43:50,839 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:43:50,839 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:43:50,839 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:43:50,839 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:43:50,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:43:50,840 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:43:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-12-09 06:43:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 06:43:50,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:43:50,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:43:50,855 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:43:50,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:43:50,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1604634911, now seen corresponding path program 1 times [2020-12-09 06:43:50,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:43:50,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545546644] [2020-12-09 06:43:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:43:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:43:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:43:51,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545546644] [2020-12-09 06:43:51,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:43:51,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:43:51,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636201395] [2020-12-09 06:43:51,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:43:51,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:43:51,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:43:51,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:43:51,021 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-12-09 06:43:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:43:51,127 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2020-12-09 06:43:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:43:51,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 06:43:51,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:43:51,135 INFO L225 Difference]: With dead ends: 169 [2020-12-09 06:43:51,135 INFO L226 Difference]: Without dead ends: 83 [2020-12-09 06:43:51,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:43:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-09 06:43:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-09 06:43:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-09 06:43:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2020-12-09 06:43:51,163 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2020-12-09 06:43:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:43:51,163 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2020-12-09 06:43:51,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:43:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2020-12-09 06:43:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 06:43:51,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:43:51,164 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 06:43:51,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:43:51,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:43:51,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:43:51,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1808081087, now seen corresponding path program 1 times [2020-12-09 06:43:51,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:43:51,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180467273] [2020-12-09 06:43:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:43:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:43:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:43:51,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180467273] [2020-12-09 06:43:51,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:43:51,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:43:51,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714619223] [2020-12-09 06:43:51,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:43:51,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:43:51,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:43:51,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:43:51,232 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2020-12-09 06:43:51,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:43:51,329 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2020-12-09 06:43:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:43:51,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-09 06:43:51,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:43:51,331 INFO L225 Difference]: With dead ends: 178 [2020-12-09 06:43:51,331 INFO L226 Difference]: Without dead ends: 98 [2020-12-09 06:43:51,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:43:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-09 06:43:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-09 06:43:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 06:43:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2020-12-09 06:43:51,341 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2020-12-09 06:43:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:43:51,341 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2020-12-09 06:43:51,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:43:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2020-12-09 06:43:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 06:43:51,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:43:51,342 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:43:51,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:43:51,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:43:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:43:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash -87677632, now seen corresponding path program 1 times [2020-12-09 06:43:51,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:43:51,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142532969] [2020-12-09 06:43:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:43:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:43:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 06:43:51,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142532969] [2020-12-09 06:43:51,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:43:51,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:43:51,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720778240] [2020-12-09 06:43:51,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:43:51,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:43:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:43:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:43:51,397 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2020-12-09 06:43:51,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:43:51,499 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2020-12-09 06:43:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:43:51,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-09 06:43:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:43:51,501 INFO L225 Difference]: With dead ends: 206 [2020-12-09 06:43:51,501 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 06:43:51,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:43:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 06:43:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-12-09 06:43:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-09 06:43:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2020-12-09 06:43:51,510 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2020-12-09 06:43:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:43:51,511 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2020-12-09 06:43:51,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:43:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2020-12-09 06:43:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-09 06:43:51,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:43:51,513 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:43:51,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:43:51,513 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:43:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:43:51,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1301133537, now seen corresponding path program 1 times [2020-12-09 06:43:51,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:43:51,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208919761] [2020-12-09 06:43:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:43:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:43:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 06:43:51,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208919761] [2020-12-09 06:43:51,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790469780] [2020-12-09 06:43:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:43:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:43:51,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:43:51,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:43:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 06:43:51,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:43:51,751 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:43:51,752 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:43:51,784 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:43:51,785 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:43:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 06:43:51,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643210482] [2020-12-09 06:43:51,835 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2020-12-09 06:43:51,836 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:43:51,839 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:43:51,843 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:43:51,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:43:52,239 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-12-09 06:43:52,605 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-12-09 06:43:52,989 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-12-09 06:43:54,279 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:43:54,582 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 122 [2020-12-09 06:43:54,933 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2020-12-09 06:43:55,274 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 123 [2020-12-09 06:43:55,436 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-12-09 06:43:55,613 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-12-09 06:43:55,808 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-12-09 06:43:56,011 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-12-09 06:43:56,230 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-12-09 06:43:56,623 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 127 [2020-12-09 06:43:57,044 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 129 [2020-12-09 06:43:57,427 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 126 [2020-12-09 06:43:57,814 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-12-09 06:43:58,240 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 132 [2020-12-09 06:43:58,665 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2020-12-09 06:43:59,127 WARN L197 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 138 [2020-12-09 06:43:59,585 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 125 [2020-12-09 06:43:59,953 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2020-12-09 06:44:00,450 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 141 [2020-12-09 06:44:00,957 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 144 [2020-12-09 06:44:01,443 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 125 [2020-12-09 06:44:01,823 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 128 [2020-12-09 06:44:02,339 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 147 [2020-12-09 06:44:02,849 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2020-12-09 06:44:03,395 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 153 [2020-12-09 06:44:03,932 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 156 [2020-12-09 06:44:04,507 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 159 [2020-12-09 06:44:05,093 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 162 [2020-12-09 06:44:05,628 WARN L197 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 125 [2020-12-09 06:44:05,863 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-12-09 06:44:05,865 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:44:05,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:44:05,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2020-12-09 06:44:05,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228617858] [2020-12-09 06:44:05,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:44:05,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:05,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:44:05,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2020-12-09 06:44:05,867 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand 7 states. [2020-12-09 06:44:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:05,923 INFO L93 Difference]: Finished difference Result 465 states and 646 transitions. [2020-12-09 06:44:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:44:05,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-09 06:44:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:05,926 INFO L225 Difference]: With dead ends: 465 [2020-12-09 06:44:05,926 INFO L226 Difference]: Without dead ends: 463 [2020-12-09 06:44:05,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2020-12-09 06:44:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-12-09 06:44:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 386. [2020-12-09 06:44:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-12-09 06:44:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 551 transitions. [2020-12-09 06:44:05,943 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 551 transitions. Word has length 52 [2020-12-09 06:44:05,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:05,944 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 551 transitions. [2020-12-09 06:44:05,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:44:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 551 transitions. [2020-12-09 06:44:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 06:44:05,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:05,948 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:06,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:44:06,149 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:06,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1370139800, now seen corresponding path program 1 times [2020-12-09 06:44:06,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:06,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98781767] [2020-12-09 06:44:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-09 06:44:06,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98781767] [2020-12-09 06:44:06,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:06,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:06,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435897321] [2020-12-09 06:44:06,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:06,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:06,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:06,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:06,240 INFO L87 Difference]: Start difference. First operand 386 states and 551 transitions. Second operand 3 states. [2020-12-09 06:44:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:06,355 INFO L93 Difference]: Finished difference Result 946 states and 1415 transitions. [2020-12-09 06:44:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:06,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 06:44:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:06,359 INFO L225 Difference]: With dead ends: 946 [2020-12-09 06:44:06,359 INFO L226 Difference]: Without dead ends: 559 [2020-12-09 06:44:06,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-12-09 06:44:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 538. [2020-12-09 06:44:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-12-09 06:44:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 795 transitions. [2020-12-09 06:44:06,379 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 795 transitions. Word has length 99 [2020-12-09 06:44:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:06,379 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 795 transitions. [2020-12-09 06:44:06,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 795 transitions. [2020-12-09 06:44:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-09 06:44:06,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:06,383 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:06,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2020-12-09 06:44:06,383 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:06,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:06,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2051000857, now seen corresponding path program 2 times [2020-12-09 06:44:06,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:06,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457176174] [2020-12-09 06:44:06,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-12-09 06:44:06,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457176174] [2020-12-09 06:44:06,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:06,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:06,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122388041] [2020-12-09 06:44:06,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:06,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:06,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:06,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:06,455 INFO L87 Difference]: Start difference. First operand 538 states and 795 transitions. Second operand 3 states. [2020-12-09 06:44:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:06,577 INFO L93 Difference]: Finished difference Result 1378 states and 2100 transitions. [2020-12-09 06:44:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:06,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-12-09 06:44:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:06,582 INFO L225 Difference]: With dead ends: 1378 [2020-12-09 06:44:06,582 INFO L226 Difference]: Without dead ends: 792 [2020-12-09 06:44:06,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-12-09 06:44:06,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 753. [2020-12-09 06:44:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-12-09 06:44:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1075 transitions. [2020-12-09 06:44:06,608 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1075 transitions. Word has length 119 [2020-12-09 06:44:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:06,608 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1075 transitions. [2020-12-09 06:44:06,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1075 transitions. [2020-12-09 06:44:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-09 06:44:06,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:06,611 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:06,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2020-12-09 06:44:06,611 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:06,612 INFO L82 PathProgramCache]: Analyzing trace with hash -312797001, now seen corresponding path program 1 times [2020-12-09 06:44:06,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:06,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782546097] [2020-12-09 06:44:06,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-12-09 06:44:06,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782546097] [2020-12-09 06:44:06,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:06,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:06,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688490029] [2020-12-09 06:44:06,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:06,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:06,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:06,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:06,664 INFO L87 Difference]: Start difference. First operand 753 states and 1075 transitions. Second operand 3 states. [2020-12-09 06:44:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:06,792 INFO L93 Difference]: Finished difference Result 1688 states and 2427 transitions. [2020-12-09 06:44:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:06,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-09 06:44:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:06,796 INFO L225 Difference]: With dead ends: 1688 [2020-12-09 06:44:06,797 INFO L226 Difference]: Without dead ends: 878 [2020-12-09 06:44:06,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-12-09 06:44:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 845. [2020-12-09 06:44:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-12-09 06:44:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1187 transitions. [2020-12-09 06:44:06,814 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1187 transitions. Word has length 139 [2020-12-09 06:44:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:06,814 INFO L481 AbstractCegarLoop]: Abstraction has 845 states and 1187 transitions. [2020-12-09 06:44:06,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1187 transitions. [2020-12-09 06:44:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-09 06:44:06,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:06,816 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:06,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-12-09 06:44:06,817 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:06,817 INFO L82 PathProgramCache]: Analyzing trace with hash -924236822, now seen corresponding path program 1 times [2020-12-09 06:44:06,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:06,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846806533] [2020-12-09 06:44:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-12-09 06:44:06,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846806533] [2020-12-09 06:44:06,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:06,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:06,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242828058] [2020-12-09 06:44:06,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:06,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:06,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:06,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:06,871 INFO L87 Difference]: Start difference. First operand 845 states and 1187 transitions. Second operand 3 states. [2020-12-09 06:44:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:07,007 INFO L93 Difference]: Finished difference Result 1872 states and 2651 transitions. [2020-12-09 06:44:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:07,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-12-09 06:44:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:07,013 INFO L225 Difference]: With dead ends: 1872 [2020-12-09 06:44:07,013 INFO L226 Difference]: Without dead ends: 994 [2020-12-09 06:44:07,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2020-12-09 06:44:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 961. [2020-12-09 06:44:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-12-09 06:44:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1347 transitions. [2020-12-09 06:44:07,039 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1347 transitions. Word has length 160 [2020-12-09 06:44:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:07,039 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1347 transitions. [2020-12-09 06:44:07,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1347 transitions. [2020-12-09 06:44:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-12-09 06:44:07,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:07,041 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:07,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-12-09 06:44:07,042 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2146553039, now seen corresponding path program 1 times [2020-12-09 06:44:07,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:07,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867087839] [2020-12-09 06:44:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2020-12-09 06:44:07,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867087839] [2020-12-09 06:44:07,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:07,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:07,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321376335] [2020-12-09 06:44:07,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:07,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:07,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:07,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,099 INFO L87 Difference]: Start difference. First operand 961 states and 1347 transitions. Second operand 3 states. [2020-12-09 06:44:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:07,244 INFO L93 Difference]: Finished difference Result 2256 states and 3259 transitions. [2020-12-09 06:44:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:07,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-12-09 06:44:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:07,250 INFO L225 Difference]: With dead ends: 2256 [2020-12-09 06:44:07,250 INFO L226 Difference]: Without dead ends: 1278 [2020-12-09 06:44:07,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-12-09 06:44:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1225. [2020-12-09 06:44:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-12-09 06:44:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1775 transitions. [2020-12-09 06:44:07,281 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1775 transitions. Word has length 187 [2020-12-09 06:44:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:07,281 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 1775 transitions. [2020-12-09 06:44:07,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1775 transitions. [2020-12-09 06:44:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-12-09 06:44:07,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:07,284 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:07,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-12-09 06:44:07,284 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:07,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1285082615, now seen corresponding path program 1 times [2020-12-09 06:44:07,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:07,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758294391] [2020-12-09 06:44:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2020-12-09 06:44:07,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758294391] [2020-12-09 06:44:07,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:07,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:07,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109332783] [2020-12-09 06:44:07,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:07,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:07,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,351 INFO L87 Difference]: Start difference. First operand 1225 states and 1775 transitions. Second operand 3 states. [2020-12-09 06:44:07,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:07,502 INFO L93 Difference]: Finished difference Result 2480 states and 3583 transitions. [2020-12-09 06:44:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:07,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-12-09 06:44:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:07,509 INFO L225 Difference]: With dead ends: 2480 [2020-12-09 06:44:07,509 INFO L226 Difference]: Without dead ends: 1246 [2020-12-09 06:44:07,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-12-09 06:44:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1213. [2020-12-09 06:44:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-12-09 06:44:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1739 transitions. [2020-12-09 06:44:07,545 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1739 transitions. Word has length 220 [2020-12-09 06:44:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:07,545 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 1739 transitions. [2020-12-09 06:44:07,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1739 transitions. [2020-12-09 06:44:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-09 06:44:07,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:07,549 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:07,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2020-12-09 06:44:07,550 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:07,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:07,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1318077091, now seen corresponding path program 1 times [2020-12-09 06:44:07,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:07,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157354867] [2020-12-09 06:44:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2020-12-09 06:44:07,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157354867] [2020-12-09 06:44:07,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:07,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:07,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626506420] [2020-12-09 06:44:07,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:07,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:07,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:07,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,667 INFO L87 Difference]: Start difference. First operand 1213 states and 1739 transitions. Second operand 3 states. [2020-12-09 06:44:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:07,814 INFO L93 Difference]: Finished difference Result 2600 states and 3711 transitions. [2020-12-09 06:44:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:07,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-09 06:44:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:07,822 INFO L225 Difference]: With dead ends: 2600 [2020-12-09 06:44:07,823 INFO L226 Difference]: Without dead ends: 1390 [2020-12-09 06:44:07,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-12-09 06:44:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1297. [2020-12-09 06:44:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2020-12-09 06:44:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1843 transitions. [2020-12-09 06:44:07,863 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1843 transitions. Word has length 233 [2020-12-09 06:44:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:07,864 INFO L481 AbstractCegarLoop]: Abstraction has 1297 states and 1843 transitions. [2020-12-09 06:44:07,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1843 transitions. [2020-12-09 06:44:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-12-09 06:44:07,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:07,868 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:07,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-12-09 06:44:07,868 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:07,868 INFO L82 PathProgramCache]: Analyzing trace with hash 307162390, now seen corresponding path program 1 times [2020-12-09 06:44:07,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:07,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907596891] [2020-12-09 06:44:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2020-12-09 06:44:07,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907596891] [2020-12-09 06:44:07,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:07,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:07,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327588039] [2020-12-09 06:44:07,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:07,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:07,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:07,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:07,950 INFO L87 Difference]: Start difference. First operand 1297 states and 1843 transitions. Second operand 3 states. [2020-12-09 06:44:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:08,092 INFO L93 Difference]: Finished difference Result 2616 states and 3711 transitions. [2020-12-09 06:44:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:08,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2020-12-09 06:44:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:08,099 INFO L225 Difference]: With dead ends: 2616 [2020-12-09 06:44:08,100 INFO L226 Difference]: Without dead ends: 1322 [2020-12-09 06:44:08,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-12-09 06:44:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1297. [2020-12-09 06:44:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2020-12-09 06:44:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1819 transitions. [2020-12-09 06:44:08,137 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1819 transitions. Word has length 255 [2020-12-09 06:44:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:08,138 INFO L481 AbstractCegarLoop]: Abstraction has 1297 states and 1819 transitions. [2020-12-09 06:44:08,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1819 transitions. [2020-12-09 06:44:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-12-09 06:44:08,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:08,141 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:44:08,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-12-09 06:44:08,141 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:08,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1478933609, now seen corresponding path program 1 times [2020-12-09 06:44:08,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:08,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906748465] [2020-12-09 06:44:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2020-12-09 06:44:08,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906748465] [2020-12-09 06:44:08,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439745734] [2020-12-09 06:44:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:44:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:08,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:44:08,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:44:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2020-12-09 06:44:08,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:44:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2020-12-09 06:44:08,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211168466] [2020-12-09 06:44:08,854 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2020-12-09 06:44:08,854 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:44:08,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:44:08,855 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:44:08,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:44:09,598 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-12-09 06:44:33,166 FATAL L? ?]: Ignoring exception! java.lang.NegativeArraySizeException: -582067795 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:648) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:612) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:448) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:205) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:158) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryToEliminate(DualJunctionTir.java:112) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:776) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:739) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:656) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:358) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:431) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:431) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:431) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:431) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:151) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 06:44:33,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:44:33,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2020-12-09 06:44:33,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940695646] [2020-12-09 06:44:33,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 06:44:33,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:33,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 06:44:33,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:44:33,169 INFO L87 Difference]: Start difference. First operand 1297 states and 1819 transitions. Second operand 8 states. [2020-12-09 06:44:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:33,610 INFO L93 Difference]: Finished difference Result 3536 states and 4995 transitions. [2020-12-09 06:44:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 06:44:33,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 270 [2020-12-09 06:44:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:33,619 INFO L225 Difference]: With dead ends: 3536 [2020-12-09 06:44:33,619 INFO L226 Difference]: Without dead ends: 2234 [2020-12-09 06:44:33,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:44:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-12-09 06:44:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1720. [2020-12-09 06:44:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1720 states. [2020-12-09 06:44:33,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2366 transitions. [2020-12-09 06:44:33,656 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2366 transitions. Word has length 270 [2020-12-09 06:44:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:33,656 INFO L481 AbstractCegarLoop]: Abstraction has 1720 states and 2366 transitions. [2020-12-09 06:44:33,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 06:44:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2366 transitions. [2020-12-09 06:44:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-12-09 06:44:33,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:44:33,659 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 10, 9, 9, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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, 1, 1] [2020-12-09 06:44:33,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-12-09 06:44:33,860 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:44:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:44:33,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1747584715, now seen corresponding path program 1 times [2020-12-09 06:44:33,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:44:33,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725086323] [2020-12-09 06:44:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:44:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:44:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2020-12-09 06:44:33,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725086323] [2020-12-09 06:44:33,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:44:33,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:44:33,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356292293] [2020-12-09 06:44:33,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:44:33,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:44:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:44:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:33,988 INFO L87 Difference]: Start difference. First operand 1720 states and 2366 transitions. Second operand 3 states. [2020-12-09 06:44:34,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:44:34,135 INFO L93 Difference]: Finished difference Result 2977 states and 4064 transitions. [2020-12-09 06:44:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:44:34,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2020-12-09 06:44:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:44:34,136 INFO L225 Difference]: With dead ends: 2977 [2020-12-09 06:44:34,136 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:44:34,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:44:34,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:44:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:44:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:44:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:44:34,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 306 [2020-12-09 06:44:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:44:34,139 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:44:34,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:44:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:44:34,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:44:34,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2020-12-09 06:44:34,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:44:34,896 INFO L258 CegarLoopResult]: At program point L135(lines 131 564) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (or (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384))) [2020-12-09 06:44:34,896 INFO L262 CegarLoopResult]: For program point L235(lines 235 240) no Hoare annotation was computed. [2020-12-09 06:44:34,896 INFO L262 CegarLoopResult]: For program point L170(lines 170 551) no Hoare annotation was computed. [2020-12-09 06:44:34,896 INFO L262 CegarLoopResult]: For program point L137(lines 137 562) no Hoare annotation was computed. [2020-12-09 06:44:34,896 INFO L258 CegarLoopResult]: At program point L104(lines 104 573) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (.cse1 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)))) (or (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) .cse0) (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse0) (and (= ULTIMATE.start_ssl3_connect_~s__state~0 4560) .cse0 .cse1) (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352) (or (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) .cse0 .cse1))) [2020-12-09 06:44:34,896 INFO L262 CegarLoopResult]: For program point L435-2(lines 205 537) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L258 CegarLoopResult]: At program point L171(lines 167 552) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) [2020-12-09 06:44:34,897 INFO L262 CegarLoopResult]: For program point L370(lines 370 374) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L262 CegarLoopResult]: For program point L173(lines 173 550) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L262 CegarLoopResult]: For program point L140(lines 140 561) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L262 CegarLoopResult]: For program point L107(lines 107 572) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L258 CegarLoopResult]: At program point L141(lines 137 562) the Hoare annotation is: (and (or (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384))) [2020-12-09 06:44:34,897 INFO L258 CegarLoopResult]: At program point L538(lines 101 604) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (.cse1 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)))) (or (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) .cse0) (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse0) (and (= ULTIMATE.start_ssl3_connect_~s__state~0 4560) .cse0 .cse1) (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352) (or (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) .cse0 .cse1))) [2020-12-09 06:44:34,897 INFO L265 CegarLoopResult]: At program point L605(lines 100 606) the Hoare annotation is: true [2020-12-09 06:44:34,897 INFO L262 CegarLoopResult]: For program point L176(lines 176 549) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L262 CegarLoopResult]: For program point L143(lines 143 560) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L262 CegarLoopResult]: For program point L110(lines 110 571) no Hoare annotation was computed. [2020-12-09 06:44:34,897 INFO L258 CegarLoopResult]: At program point L210(lines 107 572) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384))) [2020-12-09 06:44:34,898 INFO L258 CegarLoopResult]: At program point L177(lines 173 550) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L574(lines 574 602) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L575(lines 575 599) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L344(lines 344 349) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L311-1(lines 311 325) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L179(lines 179 548) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L146(lines 146 559) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L113(lines 113 570) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L576(lines 576 585) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L576-2(lines 575 597) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L258 CegarLoopResult]: At program point L147(lines 143 560) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4448)) [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L578(lines 578 582) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L446(lines 446 451) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L182(lines 182 547) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L149(lines 149 558) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L215-2(lines 205 537) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L116(lines 116 569) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L480(lines 480 484) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L315-2(lines 313 325) no Hoare annotation was computed. [2020-12-09 06:44:34,898 INFO L258 CegarLoopResult]: At program point L183(lines 179 548) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528) (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) [2020-12-09 06:44:34,898 INFO L262 CegarLoopResult]: For program point L415(lines 415 419) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L251(lines 251 256) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L185(lines 185 546) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L152(lines 152 557) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L119(lines 119 568) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L258 CegarLoopResult]: At program point L153(lines 149 558) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L188(lines 188 545) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L155(lines 155 556) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L122(lines 122 567) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L387(lines 387 391) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L354(lines 354 358) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L258 CegarLoopResult]: At program point L189(lines 185 546) the Hoare annotation is: (and (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) [2020-12-09 06:44:34,899 INFO L258 CegarLoopResult]: At program point L123(lines 119 568) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (or (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384))) [2020-12-09 06:44:34,899 INFO L258 CegarLoopResult]: At program point L355(lines 68 622) the Hoare annotation is: false [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L265 CegarLoopResult]: At program point L620(lines 68 622) the Hoare annotation is: true [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L290-2(lines 205 537) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L191(lines 191 544) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L158(lines 158 555) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L125(lines 125 566) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L456(lines 456 460) no Hoare annotation was computed. [2020-12-09 06:44:34,899 INFO L262 CegarLoopResult]: For program point L359(lines 359 363) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L227(lines 227 244) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L194(lines 194 543) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L161(lines 161 554) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L227-2(lines 205 537) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L128(lines 128 565) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L258 CegarLoopResult]: At program point L195(lines 191 544) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5))) (or (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse0 (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0)) (and (= ULTIMATE.start_ssl3_connect_~s__state~0 4560) .cse0 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560))))) [2020-12-09 06:44:34,900 INFO L258 CegarLoopResult]: At program point L129(lines 125 566) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (or (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L493-1(lines 493 505) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L427(lines 427 431) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L229(lines 229 234) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L258 CegarLoopResult]: At program point L197(lines 197 542) the Hoare annotation is: (let ((.cse1 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 4384))) (.cse0 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)))) (or (and (= 3 ULTIMATE.start_ssl3_connect_~s__state~0) .cse0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse1 .cse2) (and .cse1 .cse2 .cse0))) [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L164(lines 164 553) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L131(lines 131 564) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 616) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L258 CegarLoopResult]: At program point L198(lines 197 542) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse1 (or (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 3))) (.cse2 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse1 .cse2) (and .cse0 .cse1 .cse2 (or (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560))))) [2020-12-09 06:44:34,900 INFO L258 CegarLoopResult]: At program point L165(lines 155 556) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L496(lines 496 501) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L265-2(lines 205 537) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L398(lines 398 402) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L332-2(lines 205 537) no Hoare annotation was computed. [2020-12-09 06:44:34,900 INFO L262 CegarLoopResult]: For program point L167(lines 167 552) no Hoare annotation was computed. [2020-12-09 06:44:34,901 INFO L262 CegarLoopResult]: For program point L134(lines 134 563) no Hoare annotation was computed. [2020-12-09 06:44:34,901 INFO L262 CegarLoopResult]: For program point L101-1(lines 68 622) no Hoare annotation was computed. [2020-12-09 06:44:34,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:44:34 BoogieIcfgContainer [2020-12-09 06:44:34,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:44:34,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:44:34,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:44:34,918 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:44:34,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:43:50" (3/4) ... [2020-12-09 06:44:34,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:44:34,936 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2020-12-09 06:44:34,937 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 06:44:34,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 06:44:34,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:44:34,993 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5e7c857a-d03c-43b1-9e0e-ccb9a19bacc0/bin/utaipan/witness.graphml [2020-12-09 06:44:34,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:44:34,993 INFO L168 Benchmark]: Toolchain (without parser) took 45418.70 ms. Allocated memory was 117.4 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 96.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.1 GB. [2020-12-09 06:44:34,993 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:44:34,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.49 ms. Allocated memory is still 117.4 MB. Free memory was 96.7 MB in the beginning and 87.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:44:34,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.24 ms. Allocated memory is still 117.4 MB. Free memory was 86.5 MB in the beginning and 83.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:44:34,994 INFO L168 Benchmark]: Boogie Preprocessor took 35.09 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 81.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:44:34,994 INFO L168 Benchmark]: RCFGBuilder took 852.03 ms. Allocated memory is still 117.4 MB. Free memory was 81.8 MB in the beginning and 86.5 MB in the end (delta: -4.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:44:34,995 INFO L168 Benchmark]: TraceAbstraction took 44126.94 ms. Allocated memory was 117.4 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 85.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.1 GB. [2020-12-09 06:44:34,995 INFO L168 Benchmark]: Witness Printer took 74.73 ms. Allocated memory is still 3.2 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:44:34,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.49 ms. Allocated memory is still 117.4 MB. Free memory was 96.7 MB in the beginning and 87.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.24 ms. Allocated memory is still 117.4 MB. Free memory was 86.5 MB in the beginning and 83.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.09 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 81.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 852.03 ms. Allocated memory is still 117.4 MB. Free memory was 81.8 MB in the beginning and 86.5 MB in the end (delta: -4.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44126.94 ms. Allocated memory was 117.4 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 85.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.1 GB. * Witness Printer took 74.73 ms. Allocated memory is still 3.2 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 616]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (4432 <= s__state && s__state <= 4480) && blastFlag < 5 - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: (((3 == s__state && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) || 4432 <= s__state) || ((!(blastFlag == 4) && blastFlag < 5) && !(s__state == 4384))) || ((blastFlag < 5 && !(s__state == 4384)) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((!(blastFlag == 4) && (4352 <= s__state || s__state <= 3)) && s__state <= 4432) && blastFlag < 5) && !(s__state == 4384) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: (((s__state <= 4352 && !(blastFlag == 4)) && (4352 <= s__state || s__state <= 3)) && blastFlag < 5) || (((s__state <= 4352 && (4352 <= s__state || s__state <= 3)) && blastFlag < 5) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: (4432 <= s__state && s__state <= 4512) && blastFlag < 5 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (((!(blastFlag == 4) && (4352 <= s__state || s__state <= 3)) && s__state <= 4432) && blastFlag < 5) && !(s__state == 4384) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: (!(blastFlag == 4) && blastFlag < 5) && !(s__state == 4384) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: 4512 <= s__state && blastFlag < 5 - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((s__state <= 4528 && 4432 <= s__state) && blastFlag < 5) || (!(blastFlag == 4) && blastFlag < 5)) || ((s__state == 4560 && blastFlag < 5) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560))) || (((s__state <= 4352 && (4352 <= s__state || s__state <= 3)) && blastFlag < 5) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (4432 <= s__state && blastFlag < 5) && s__state <= 4448 - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: (4432 <= s__state && s__state <= 4512) && blastFlag < 5 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: ((!(blastFlag == 4) && (4352 <= s__state || s__state <= 3)) && s__state <= 4432) && blastFlag < 5 - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: (s__state <= 4528 && 4512 <= s__state) && blastFlag < 5 - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((4352 <= s__state || s__state <= 3) && s__state <= 4432) && blastFlag < 5) && !(s__state == 4384) - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: ((!(blastFlag == 4) && blastFlag < 5) && 4560 <= s__state) || ((s__state == 4560 && blastFlag < 5) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((s__state <= 4528 && 4432 <= s__state) && blastFlag < 5) || (!(blastFlag == 4) && blastFlag < 5)) || ((s__state == 4560 && blastFlag < 5) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560))) || (((s__state <= 4352 && (4352 <= s__state || s__state <= 3)) && blastFlag < 5) && (3 == s__s3__tmp__next_state___0 || s__s3__tmp__next_state___0 == 4560)) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (4432 <= s__state && s__state <= 4480) && blastFlag < 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.3s, OverallIterations: 14, TraceHistogramMax: 14, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1717 SDtfs, 1158 SDslu, 1343 SDs, 0 SdLazy, 1906 SolverSat, 426 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 741 GetRequests, 685 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1720occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 925 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 20 PreInvPairs, 156 NumberOfFragments, 378 HoareAnnotationTreeSize, 20 FomulaSimplifications, 42813 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 20 FomulaSimplificationsInter, 1983 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 2448 NumberOfCodeBlocks, 2448 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2752 ConstructedInterpolants, 0 QuantifiedInterpolants, 853414 SizeOfPredicates, 5 NumberOfNonLiveVariables, 672 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 8486/8607 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...