./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9738a6698dfc65e1ff903e1e31cda8a1b59d676d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9738a6698dfc65e1ff903e1e31cda8a1b59d676d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:12:16,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:12:16,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:12:16,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:12:16,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:12:16,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:12:16,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:12:16,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:12:16,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:12:16,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:12:16,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:12:16,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:12:16,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:12:16,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:12:16,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:12:16,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:12:16,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:12:16,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:12:16,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:12:16,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:12:16,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:12:16,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:12:16,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:12:16,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:12:16,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:12:16,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:12:16,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:12:16,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:12:16,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:12:16,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:12:16,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:12:16,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:12:16,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:12:16,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:12:16,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:12:16,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:12:16,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:12:16,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:12:16,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:12:16,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:12:16,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:12:16,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:12:17,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:12:17,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:12:17,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:12:17,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:12:17,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:12:17,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:12:17,020 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:12:17,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:12:17,021 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:12:17,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:12:17,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:12:17,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:12:17,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:12:17,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:12:17,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:12:17,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:12:17,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:12:17,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:12:17,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:12:17,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:12:17,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:12:17,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:12:17,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:12:17,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:12:17,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:12:17,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:12:17,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:12:17,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:12:17,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:12:17,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:12:17,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9738a6698dfc65e1ff903e1e31cda8a1b59d676d [2021-10-13 01:12:17,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:12:17,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:12:17,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:12:17,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:12:17,371 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:12:17,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-13 01:12:17,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/c07e3c052/189b01659d0744d693fcb340e2762588/FLAGbbb4ca5cb [2021-10-13 01:12:18,133 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:12:18,134 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-13 01:12:18,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/c07e3c052/189b01659d0744d693fcb340e2762588/FLAGbbb4ca5cb [2021-10-13 01:12:18,461 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/c07e3c052/189b01659d0744d693fcb340e2762588 [2021-10-13 01:12:18,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:12:18,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:12:18,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:12:18,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:12:18,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:12:18,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693a7717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18, skipping insertion in model container [2021-10-13 01:12:18,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:12:18,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:12:18,718 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-13 01:12:18,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:12:18,734 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:12:18,789 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-13 01:12:18,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:12:18,807 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:12:18,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18 WrapperNode [2021-10-13 01:12:18,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:12:18,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:12:18,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:12:18,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:12:18,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:12:18,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:12:18,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:12:18,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:12:18,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:12:18,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:12:18,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:12:18,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:12:18,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (1/1) ... [2021-10-13 01:12:18,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:12:18,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:18,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:19,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:12:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:12:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:12:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:12:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:12:19,190 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 01:12:19,797 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-10-13 01:12:19,810 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-10-13 01:12:19,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:12:19,822 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 01:12:19,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:19 BoogieIcfgContainer [2021-10-13 01:12:19,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:12:19,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:12:19,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:12:19,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:12:19,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:12:18" (1/3) ... [2021-10-13 01:12:19,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7df4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:12:19, skipping insertion in model container [2021-10-13 01:12:19,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:18" (2/3) ... [2021-10-13 01:12:19,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7df4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:12:19, skipping insertion in model container [2021-10-13 01:12:19,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:19" (3/3) ... [2021-10-13 01:12:19,863 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2021-10-13 01:12:19,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:12:19,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:12:19,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:12:19,988 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:12:19,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:12:20,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 01:12:20,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:20,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:20,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:20,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:20,062 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2021-10-13 01:12:20,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:20,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029728106] [2021-10-13 01:12:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:20,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:20,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:12:20,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029728106] [2021-10-13 01:12:20,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029728106] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:20,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:20,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:12:20,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452873714] [2021-10-13 01:12:20,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:20,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:12:20,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:20,539 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:20,821 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2021-10-13 01:12:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:20,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 01:12:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:20,839 INFO L225 Difference]: With dead ends: 247 [2021-10-13 01:12:20,840 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 01:12:20,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 01:12:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-13 01:12:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2021-10-13 01:12:20,932 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2021-10-13 01:12:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:20,935 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2021-10-13 01:12:20,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:20,936 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2021-10-13 01:12:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 01:12:20,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:20,942 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:20,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:12:20,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2021-10-13 01:12:20,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:20,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031675845] [2021-10-13 01:12:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:20,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:21,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:12:21,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031675845] [2021-10-13 01:12:21,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031675845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:21,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:21,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:12:21,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967019578] [2021-10-13 01:12:21,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:21,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:12:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:21,136 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:21,333 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-13 01:12:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:21,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 01:12:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:21,342 INFO L225 Difference]: With dead ends: 233 [2021-10-13 01:12:21,342 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 01:12:21,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 01:12:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-10-13 01:12:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2021-10-13 01:12:21,370 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2021-10-13 01:12:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:21,370 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2021-10-13 01:12:21,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2021-10-13 01:12:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 01:12:21,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:21,374 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 01:12:21,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:12:21,375 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:21,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2021-10-13 01:12:21,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:21,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36291025] [2021-10-13 01:12:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:21,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:21,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:12:21,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36291025] [2021-10-13 01:12:21,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36291025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:21,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:21,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:12:21,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565115277] [2021-10-13 01:12:21,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:21,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:12:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:21,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:21,519 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:21,560 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2021-10-13 01:12:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:21,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 01:12:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:21,565 INFO L225 Difference]: With dead ends: 271 [2021-10-13 01:12:21,566 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 01:12:21,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 01:12:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-13 01:12:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2021-10-13 01:12:21,588 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2021-10-13 01:12:21,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:21,588 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2021-10-13 01:12:21,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2021-10-13 01:12:21,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 01:12:21,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:21,592 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 01:12:21,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:12:21,593 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:21,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2021-10-13 01:12:21,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:21,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504895803] [2021-10-13 01:12:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:21,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:21,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:12:21,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504895803] [2021-10-13 01:12:21,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504895803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:21,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:21,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:12:21,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890120882] [2021-10-13 01:12:21,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:21,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:12:21,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:21,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:21,677 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:21,840 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2021-10-13 01:12:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:21,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 01:12:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:21,844 INFO L225 Difference]: With dead ends: 292 [2021-10-13 01:12:21,844 INFO L226 Difference]: Without dead ends: 175 [2021-10-13 01:12:21,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-13 01:12:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-10-13 01:12:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2021-10-13 01:12:21,877 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2021-10-13 01:12:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:21,880 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2021-10-13 01:12:21,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2021-10-13 01:12:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 01:12:21,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:21,886 INFO L512 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:21,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:12:21,886 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:21,887 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2021-10-13 01:12:21,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:12:21,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70275] [2021-10-13 01:12:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:21,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:12:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:21,979 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:22,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:12:22,078 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:12:22,079 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:12:22,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:12:22,089 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:12:22,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:12:22 BoogieIcfgContainer [2021-10-13 01:12:22,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:12:22,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:12:22,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:12:22,197 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:12:22,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:19" (3/4) ... [2021-10-13 01:12:22,215 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:12:22,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:12:22,217 INFO L168 Benchmark]: Toolchain (without parser) took 3750.32 ms. Allocated memory is still 104.9 MB. Free memory was 76.0 MB in the beginning and 34.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:22,217 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 53.5 MB in the beginning and 53.4 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:12:22,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.54 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 61.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:22,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.38 ms. Allocated memory is still 104.9 MB. Free memory was 61.3 MB in the beginning and 58.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:22,219 INFO L168 Benchmark]: Boogie Preprocessor took 78.58 ms. Allocated memory is still 104.9 MB. Free memory was 58.5 MB in the beginning and 56.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:22,220 INFO L168 Benchmark]: RCFGBuilder took 883.26 ms. Allocated memory is still 104.9 MB. Free memory was 56.5 MB in the beginning and 79.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:22,221 INFO L168 Benchmark]: TraceAbstraction took 2364.49 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 34.3 MB in the end (delta: 44.9 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:22,221 INFO L168 Benchmark]: Witness Printer took 18.26 ms. Allocated memory is still 104.9 MB. Free memory was 34.3 MB in the beginning and 34.0 MB in the end (delta: 280.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:12:22,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 53.5 MB in the beginning and 53.4 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.54 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 61.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.38 ms. Allocated memory is still 104.9 MB. Free memory was 61.3 MB in the beginning and 58.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.58 ms. Allocated memory is still 104.9 MB. Free memory was 58.5 MB in the beginning and 56.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 883.26 ms. Allocated memory is still 104.9 MB. Free memory was 56.5 MB in the beginning and 79.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2364.49 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 34.3 MB in the end (delta: 44.9 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. * Witness Printer took 18.26 ms. Allocated memory is still 104.9 MB. Free memory was 34.3 MB in the beginning and 34.0 MB in the end (delta: 280.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 616]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 303. Possible FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 = __VERIFIER_nondet_int(); [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect = __VERIFIER_nondet_uint(); [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags = __VERIFIER_nondet_int(); [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 = __VERIFIER_nondet_int(); [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND TRUE \read(s__hit) [L96] ag_Y = 208 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND TRUE \read(s__hit) [L303] s__state = s__state | ag_Y [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2120.5ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 38.1ms, AutomataDifference: 771.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 714 SDtfs, 58 SDslu, 412 SDs, 0 SdLazy, 296 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 384.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 137.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.4ms SsaConstructionTime, 321.8ms SatisfiabilityAnalysisTime, 362.9ms InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 35/35 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 could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:12:22,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:12:25,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:12:25,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:12:25,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:12:25,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:12:25,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:12:25,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:12:25,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:12:25,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:12:25,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:12:25,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:12:25,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:12:25,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:12:25,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:12:25,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:12:25,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:12:25,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:12:25,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:12:25,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:12:25,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:12:25,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:12:25,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:12:25,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:12:25,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:12:25,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:12:25,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:12:25,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:12:25,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:12:25,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:12:25,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:12:25,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:12:25,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:12:25,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:12:25,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:12:25,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:12:25,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:12:25,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:12:25,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:12:25,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:12:25,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:12:25,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:12:25,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 01:12:25,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:12:25,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:12:25,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:12:25,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:12:25,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:12:25,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:12:25,187 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:12:25,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:12:25,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:12:25,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:12:25,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:12:25,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:12:25,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:12:25,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:12:25,191 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:12:25,191 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:12:25,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:12:25,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:12:25,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:12:25,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:12:25,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:12:25,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:12:25,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:12:25,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:12:25,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:12:25,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:12:25,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:12:25,196 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:12:25,196 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:12:25,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:12:25,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:12:25,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:12:25,197 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9738a6698dfc65e1ff903e1e31cda8a1b59d676d [2021-10-13 01:12:25,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:12:25,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:12:25,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:12:25,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:12:25,716 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:12:25,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-13 01:12:25,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/0918c0c49/f6090787c8ec474d919eb7b67ea46479/FLAGdbdcfe74b [2021-10-13 01:12:26,581 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:12:26,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-13 01:12:26,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/0918c0c49/f6090787c8ec474d919eb7b67ea46479/FLAGdbdcfe74b [2021-10-13 01:12:26,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/data/0918c0c49/f6090787c8ec474d919eb7b67ea46479 [2021-10-13 01:12:26,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:12:26,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:12:26,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:12:26,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:12:26,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:12:26,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:12:26" (1/1) ... [2021-10-13 01:12:26,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdb9920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:26, skipping insertion in model container [2021-10-13 01:12:26,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:12:26" (1/1) ... [2021-10-13 01:12:26,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:12:26,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:12:27,128 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-13 01:12:27,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:12:27,182 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:12:27,333 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-13 01:12:27,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:12:27,365 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:12:27,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27 WrapperNode [2021-10-13 01:12:27,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:12:27,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:12:27,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:12:27,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:12:27,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:12:27,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:12:27,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:12:27,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:12:27,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:12:27,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:12:27,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:12:27,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:12:27,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (1/1) ... [2021-10-13 01:12:27,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:12:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:12:27,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:12:27,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:12:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:12:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:12:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:12:27,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:12:27,872 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 01:12:28,540 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-10-13 01:12:28,541 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-10-13 01:12:28,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:12:28,554 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 01:12:28,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:28 BoogieIcfgContainer [2021-10-13 01:12:28,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:12:28,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:12:28,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:12:28,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:12:28,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:12:26" (1/3) ... [2021-10-13 01:12:28,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f5ac3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:12:28, skipping insertion in model container [2021-10-13 01:12:28,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:12:27" (2/3) ... [2021-10-13 01:12:28,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f5ac3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:12:28, skipping insertion in model container [2021-10-13 01:12:28,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:28" (3/3) ... [2021-10-13 01:12:28,570 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2021-10-13 01:12:28,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:12:28,577 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:12:28,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:12:28,664 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:12:28,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:12:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 01:12:28,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:28,721 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:28,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:28,730 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2021-10-13 01:12:28,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:28,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800892882] [2021-10-13 01:12:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:28,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:28,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:28,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:28,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:12:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:28,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:28,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:29,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:29,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:29,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800892882] [2021-10-13 01:12:29,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800892882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:29,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:29,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:12:29,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444406959] [2021-10-13 01:12:29,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:29,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:29,278 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:29,458 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2021-10-13 01:12:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 01:12:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:29,478 INFO L225 Difference]: With dead ends: 247 [2021-10-13 01:12:29,479 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 01:12:29,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 01:12:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-13 01:12:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2021-10-13 01:12:29,528 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2021-10-13 01:12:29,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:29,528 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2021-10-13 01:12:29,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:29,529 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2021-10-13 01:12:29,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 01:12:29,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:29,532 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:29,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:29,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:29,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:29,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2021-10-13 01:12:29,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:29,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581526716] [2021-10-13 01:12:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:29,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:29,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:29,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:29,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:12:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:29,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:29,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:30,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:30,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:30,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581526716] [2021-10-13 01:12:30,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581526716] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:30,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:30,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:12:30,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376875864] [2021-10-13 01:12:30,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:30,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:30,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:30,201 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:30,426 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-13 01:12:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:30,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 01:12:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:30,440 INFO L225 Difference]: With dead ends: 233 [2021-10-13 01:12:30,440 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 01:12:30,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 01:12:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-10-13 01:12:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2021-10-13 01:12:30,461 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2021-10-13 01:12:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:30,462 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2021-10-13 01:12:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2021-10-13 01:12:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 01:12:30,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:30,466 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 01:12:30,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 01:12:30,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:30,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2021-10-13 01:12:30,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:30,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813196572] [2021-10-13 01:12:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:30,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:30,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:30,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:30,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:12:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:30,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:30,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:31,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:31,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:31,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813196572] [2021-10-13 01:12:31,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813196572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:31,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:31,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:12:31,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750427949] [2021-10-13 01:12:31,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:31,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:31,292 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:31,321 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2021-10-13 01:12:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 01:12:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:31,326 INFO L225 Difference]: With dead ends: 271 [2021-10-13 01:12:31,326 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 01:12:31,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 01:12:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-13 01:12:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2021-10-13 01:12:31,369 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2021-10-13 01:12:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:31,370 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2021-10-13 01:12:31,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:31,371 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2021-10-13 01:12:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 01:12:31,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:31,375 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 01:12:31,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:31,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:31,583 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2021-10-13 01:12:31,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:31,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851345845] [2021-10-13 01:12:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:31,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:31,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:31,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:31,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:12:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:31,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:31,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:31,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:31,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:31,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851345845] [2021-10-13 01:12:31,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851345845] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:31,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:31,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:12:31,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403396750] [2021-10-13 01:12:31,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:31,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:31,992 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:32,127 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2021-10-13 01:12:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 01:12:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:32,130 INFO L225 Difference]: With dead ends: 292 [2021-10-13 01:12:32,130 INFO L226 Difference]: Without dead ends: 175 [2021-10-13 01:12:32,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-13 01:12:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-10-13 01:12:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2021-10-13 01:12:32,141 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2021-10-13 01:12:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:32,142 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2021-10-13 01:12:32,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2021-10-13 01:12:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 01:12:32,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:32,145 INFO L512 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:32,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 01:12:32,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:32,357 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:32,357 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2021-10-13 01:12:32,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:32,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212447200] [2021-10-13 01:12:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:32,358 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:32,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:32,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:32,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 01:12:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:32,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:12:32,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 01:12:32,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 01:12:33,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:33,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212447200] [2021-10-13 01:12:33,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212447200] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:12:33,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:12:33,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-13 01:12:33,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955252740] [2021-10-13 01:12:33,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:12:33,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:12:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:12:33,401 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:34,033 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2021-10-13 01:12:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:12:34,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 01:12:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:34,037 INFO L225 Difference]: With dead ends: 566 [2021-10-13 01:12:34,037 INFO L226 Difference]: Without dead ends: 431 [2021-10-13 01:12:34,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:12:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-10-13 01:12:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2021-10-13 01:12:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.4521531100478469) internal successors, (607), 418 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2021-10-13 01:12:34,061 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2021-10-13 01:12:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:34,062 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2021-10-13 01:12:34,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2021-10-13 01:12:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 01:12:34,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:34,065 INFO L512 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:34,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:34,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:34,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:34,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:34,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2021-10-13 01:12:34,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:34,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391454989] [2021-10-13 01:12:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:34,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:34,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:34,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 01:12:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:34,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:34,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 01:12:34,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 01:12:34,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:34,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391454989] [2021-10-13 01:12:34,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391454989] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:34,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:34,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:12:34,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877600931] [2021-10-13 01:12:34,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:34,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:34,942 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:34,986 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2021-10-13 01:12:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 01:12:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:34,991 INFO L225 Difference]: With dead ends: 927 [2021-10-13 01:12:34,991 INFO L226 Difference]: Without dead ends: 574 [2021-10-13 01:12:34,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-13 01:12:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2021-10-13 01:12:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.4623467600700526) internal successors, (835), 571 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2021-10-13 01:12:35,022 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2021-10-13 01:12:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:35,022 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2021-10-13 01:12:35,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2021-10-13 01:12:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 01:12:35,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:35,025 INFO L512 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:35,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:35,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:35,238 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2021-10-13 01:12:35,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:35,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898925638] [2021-10-13 01:12:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:35,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:35,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:35,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:35,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 01:12:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:35,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:35,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 01:12:35,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 01:12:36,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:36,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898925638] [2021-10-13 01:12:36,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898925638] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:36,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:36,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:12:36,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223780917] [2021-10-13 01:12:36,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:36,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:36,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:36,024 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:36,062 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2021-10-13 01:12:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:36,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 01:12:36,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:36,068 INFO L225 Difference]: With dead ends: 576 [2021-10-13 01:12:36,068 INFO L226 Difference]: Without dead ends: 419 [2021-10-13 01:12:36,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-10-13 01:12:36,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2021-10-13 01:12:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.4375) internal successors, (598), 416 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2021-10-13 01:12:36,095 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2021-10-13 01:12:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2021-10-13 01:12:36,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2021-10-13 01:12:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 01:12:36,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:36,100 INFO L512 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:36,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:36,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:36,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:36,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2021-10-13 01:12:36,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:36,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454417979] [2021-10-13 01:12:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:36,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:36,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:36,318 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:36,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 01:12:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:36,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:12:36,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:37,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:12:37,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:37,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454417979] [2021-10-13 01:12:37,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454417979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:12:37,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:12:37,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-13 01:12:37,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996096166] [2021-10-13 01:12:37,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 01:12:37,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:12:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:12:37,518 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:38,698 INFO L93 Difference]: Finished difference Result 855 states and 1264 transitions. [2021-10-13 01:12:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 01:12:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 01:12:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:38,704 INFO L225 Difference]: With dead ends: 855 [2021-10-13 01:12:38,705 INFO L226 Difference]: Without dead ends: 699 [2021-10-13 01:12:38,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 232.9ms TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:12:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-10-13 01:12:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 476. [2021-10-13 01:12:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.4042105263157896) internal successors, (667), 475 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 667 transitions. [2021-10-13 01:12:38,734 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 667 transitions. Word has length 68 [2021-10-13 01:12:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:38,734 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 667 transitions. [2021-10-13 01:12:38,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:38,735 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 667 transitions. [2021-10-13 01:12:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 01:12:38,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:38,737 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:38,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-13 01:12:38,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:38,953 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2021-10-13 01:12:38,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:38,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896338146] [2021-10-13 01:12:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:38,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:38,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:38,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 01:12:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:39,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:39,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 01:12:39,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 01:12:39,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:39,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896338146] [2021-10-13 01:12:39,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896338146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:39,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:39,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 01:12:39,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245292033] [2021-10-13 01:12:39,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:12:39,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:39,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:12:39,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:39,671 INFO L87 Difference]: Start difference. First operand 476 states and 667 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:39,833 INFO L93 Difference]: Finished difference Result 934 states and 1333 transitions. [2021-10-13 01:12:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:12:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 01:12:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:39,837 INFO L225 Difference]: With dead ends: 934 [2021-10-13 01:12:39,837 INFO L226 Difference]: Without dead ends: 524 [2021-10-13 01:12:39,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:12:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-13 01:12:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 518. [2021-10-13 01:12:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.390715667311412) internal successors, (719), 517 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 719 transitions. [2021-10-13 01:12:39,859 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 719 transitions. Word has length 85 [2021-10-13 01:12:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:39,860 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 719 transitions. [2021-10-13 01:12:39,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 719 transitions. [2021-10-13 01:12:39,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 01:12:39,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:39,866 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:39,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:40,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:40,078 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2021-10-13 01:12:40,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:40,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129599326] [2021-10-13 01:12:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:40,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:40,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:40,080 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:40,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 01:12:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:40,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:12:40,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 01:12:40,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 01:12:41,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:41,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129599326] [2021-10-13 01:12:41,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129599326] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:41,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:41,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 01:12:41,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616756986] [2021-10-13 01:12:41,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:12:41,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:12:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:12:41,026 INFO L87 Difference]: Start difference. First operand 518 states and 719 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:41,109 INFO L93 Difference]: Finished difference Result 1468 states and 2045 transitions. [2021-10-13 01:12:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:12:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-13 01:12:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:41,117 INFO L225 Difference]: With dead ends: 1468 [2021-10-13 01:12:41,118 INFO L226 Difference]: Without dead ends: 1016 [2021-10-13 01:12:41,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:12:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-13 01:12:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1012. [2021-10-13 01:12:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 1.3788328387734916) internal successors, (1394), 1011 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1394 transitions. [2021-10-13 01:12:41,177 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1394 transitions. Word has length 104 [2021-10-13 01:12:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:41,178 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1394 transitions. [2021-10-13 01:12:41,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:12:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1394 transitions. [2021-10-13 01:12:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 01:12:41,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:41,181 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:41,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:41,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:41,397 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:12:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:41,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2021-10-13 01:12:41,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:41,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233888193] [2021-10-13 01:12:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:41,399 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:41,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:41,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:41,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 01:12:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:41,871 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:12:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:12:42,295 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 01:12:42,296 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:12:42,297 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:12:42,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:42,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:42,532 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:12:42,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:12:42 BoogieIcfgContainer [2021-10-13 01:12:42,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:12:42,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:12:42,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:12:42,631 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:12:42,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:12:28" (3/4) ... [2021-10-13 01:12:42,633 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:12:42,762 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:12:42,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:12:42,764 INFO L168 Benchmark]: Toolchain (without parser) took 15904.53 ms. Allocated memory was 50.3 MB in the beginning and 83.9 MB in the end (delta: 33.6 MB). Free memory was 25.7 MB in the beginning and 29.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:42,764 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory is still 29.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:12:42,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.23 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.5 MB in the beginning and 48.4 MB in the end (delta: -22.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:42,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.85 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 45.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:42,766 INFO L168 Benchmark]: Boogie Preprocessor took 97.29 ms. Allocated memory is still 69.2 MB. Free memory was 45.8 MB in the beginning and 43.8 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:12:42,766 INFO L168 Benchmark]: RCFGBuilder took 989.71 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 37.4 MB in the end (delta: 6.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:42,767 INFO L168 Benchmark]: TraceAbstraction took 14068.05 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 36.8 MB in the beginning and 42.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:42,767 INFO L168 Benchmark]: Witness Printer took 131.82 ms. Allocated memory is still 83.9 MB. Free memory was 42.6 MB in the beginning and 29.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:12:42,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory is still 29.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 507.23 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.5 MB in the beginning and 48.4 MB in the end (delta: -22.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.85 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 45.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.29 ms. Allocated memory is still 69.2 MB. Free memory was 45.8 MB in the beginning and 43.8 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 989.71 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 37.4 MB in the end (delta: 6.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14068.05 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 36.8 MB in the beginning and 42.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * Witness Printer took 131.82 ms. Allocated memory is still 83.9 MB. Free memory was 42.6 MB in the beginning and 29.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 616]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 = __VERIFIER_nondet_int(); [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect = __VERIFIER_nondet_uint(); [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags = __VERIFIER_nondet_int(); [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 = __VERIFIER_nondet_int(); [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(\read(s__hit)) [L98] ag_Z = 48 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND FALSE !(\read(s__hit)) [L305] s__state = s__state | ag_Z [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND TRUE s__state == 4400 [L311] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L312] skip = 1 [L326] s__state = 4416 [L327] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND TRUE s__state == 4416 [L331] ret = __VERIFIER_nondet_int() [L332] COND FALSE !(blastFlag == 3) [L337] COND FALSE !(ret <= 0) [L342] s__state = 4432 [L343] s__init_num = 0 [L344] COND FALSE !(! tmp___6) [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13879.4ms, OverallIterations: 11, TraceHistogramMax: 6, EmptinessCheckTime: 58.0ms, AutomataDifference: 2832.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1871 SDtfs, 1875 SDslu, 2477 SDs, 0 SdLazy, 1673 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1732.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1240 GetRequests, 1208 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 335.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=10, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 282.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 256 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 212.5ms SsaConstructionTime, 549.9ms SatisfiabilityAnalysisTime, 5089.7ms InterpolantComputationTime, 729 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1230 ConstructedInterpolants, 59 QuantifiedInterpolants, 3034 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1323 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 727/828 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:12:42,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964f8b50-e5e0-4b85-b169-75ea52942f37/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...