./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9738a6698dfc65e1ff903e1e31cda8a1b59d676d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 0.2.0-7b2dab5 [2020-12-09 06:08:19,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:08:19,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:08:19,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:08:19,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:08:19,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:08:19,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:08:19,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:08:19,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:08:19,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:08:19,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:08:19,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:08:19,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:08:19,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:08:19,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:08:19,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:08:19,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:08:19,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:08:19,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:08:19,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:08:19,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:08:19,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:08:19,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:08:19,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:08:19,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:08:19,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:08:19,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:08:19,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:08:19,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:08:19,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:08:19,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:08:19,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:08:19,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:08:19,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:08:19,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:08:19,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:08:19,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:08:19,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:08:19,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:08:19,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:08:19,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:08:19,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:08:19,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:08:19,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:08:19,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:08:19,473 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:08:19,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:08:19,473 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:08:19,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:08:19,473 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:08:19,473 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:08:19,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:08:19,474 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:08:19,474 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:08:19,474 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:08:19,474 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:08:19,475 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:08:19,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:08:19,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:08:19,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:08:19,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:08:19,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:08:19,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:08:19,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:08:19,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:08:19,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:08:19,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:08:19,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:08:19,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:08:19,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:08:19,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:08:19,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:08:19,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:08:19,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:08:19,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:08:19,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:08:19,478 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:08:19,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:08:19,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:08:19,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:08:19,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:08:19,479 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9738a6698dfc65e1ff903e1e31cda8a1b59d676d [2020-12-09 06:08:19,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:08:19,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:08:19,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:08:19,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:08:19,662 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:08:19,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-12-09 06:08:19,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/3492e219c/7fb7a17a04bd4d78a0aeafa128e9859e/FLAGa248b2b39 [2020-12-09 06:08:20,089 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:08:20,089 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-12-09 06:08:20,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/3492e219c/7fb7a17a04bd4d78a0aeafa128e9859e/FLAGa248b2b39 [2020-12-09 06:08:20,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/3492e219c/7fb7a17a04bd4d78a0aeafa128e9859e [2020-12-09 06:08:20,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:08:20,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:08:20,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:08:20,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:08:20,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:08:20,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4583e584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20, skipping insertion in model container [2020-12-09 06:08:20,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:08:20,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:08:20,291 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2020-12-09 06:08:20,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:08:20,304 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:08:20,338 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2020-12-09 06:08:20,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:08:20,350 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:08:20,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20 WrapperNode [2020-12-09 06:08:20,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:08:20,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:08:20,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:08:20,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:08:20,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:08:20,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:08:20,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:08:20,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:08:20,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... [2020-12-09 06:08:20,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:08:20,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:08:20,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:08:20,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:08:20,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:08:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:08:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:08:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:08:20,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:08:20,586 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:08:20,892 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-12-09 06:08:20,893 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-12-09 06:08:21,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:08:21,209 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:08:21,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:08:21 BoogieIcfgContainer [2020-12-09 06:08:21,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:08:21,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:08:21,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:08:21,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:08:21,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:08:20" (1/3) ... [2020-12-09 06:08:21,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235857e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:08:21, skipping insertion in model container [2020-12-09 06:08:21,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:20" (2/3) ... [2020-12-09 06:08:21,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235857e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:08:21, skipping insertion in model container [2020-12-09 06:08:21,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:08:21" (3/3) ... [2020-12-09 06:08:21,216 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-12-09 06:08:21,226 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:08:21,229 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:08:21,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:08:21,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:08:21,256 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:08:21,256 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:08:21,256 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:08:21,256 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:08:21,256 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:08:21,256 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:08:21,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:08:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-12-09 06:08:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 06:08:21,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:21,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:08:21,271 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:21,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1604634911, now seen corresponding path program 1 times [2020-12-09 06:08:21,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:08:21,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977555476] [2020-12-09 06:08:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:08:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:08:21,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977555476] [2020-12-09 06:08:21,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:21,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:08:21,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063655820] [2020-12-09 06:08:21,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:21,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:08:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:21,430 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-12-09 06:08:21,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:21,552 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2020-12-09 06:08:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:21,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 06:08:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:21,563 INFO L225 Difference]: With dead ends: 169 [2020-12-09 06:08:21,563 INFO L226 Difference]: Without dead ends: 83 [2020-12-09 06:08:21,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-09 06:08:21,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-09 06:08:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-09 06:08:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2020-12-09 06:08:21,598 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2020-12-09 06:08:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:21,598 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2020-12-09 06:08:21,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2020-12-09 06:08:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 06:08:21,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:21,599 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:08:21,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:08:21,600 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1808081087, now seen corresponding path program 1 times [2020-12-09 06:08:21,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:08:21,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828733096] [2020-12-09 06:08:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:08:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:08:21,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828733096] [2020-12-09 06:08:21,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:21,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:21,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765760374] [2020-12-09 06:08:21,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:21,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:08:21,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:21,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:21,653 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2020-12-09 06:08:21,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:21,743 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2020-12-09 06:08:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:21,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-09 06:08:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:21,744 INFO L225 Difference]: With dead ends: 178 [2020-12-09 06:08:21,745 INFO L226 Difference]: Without dead ends: 98 [2020-12-09 06:08:21,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-09 06:08:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-09 06:08:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 06:08:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2020-12-09 06:08:21,752 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2020-12-09 06:08:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:21,752 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2020-12-09 06:08:21,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2020-12-09 06:08:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 06:08:21,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:21,754 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:08:21,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:08:21,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:21,755 INFO L82 PathProgramCache]: Analyzing trace with hash -87677632, now seen corresponding path program 1 times [2020-12-09 06:08:21,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:08:21,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400360538] [2020-12-09 06:08:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:08:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 06:08:21,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400360538] [2020-12-09 06:08:21,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:21,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:21,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950973939] [2020-12-09 06:08:21,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:21,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:08:21,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:21,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:21,800 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2020-12-09 06:08:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:21,892 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2020-12-09 06:08:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:21,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-09 06:08:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:21,893 INFO L225 Difference]: With dead ends: 206 [2020-12-09 06:08:21,894 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 06:08:21,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 06:08:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-12-09 06:08:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-09 06:08:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2020-12-09 06:08:21,900 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2020-12-09 06:08:21,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:21,901 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2020-12-09 06:08:21,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2020-12-09 06:08:21,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-09 06:08:21,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:21,902 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:08:21,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:08:21,902 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:21,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1301133537, now seen corresponding path program 1 times [2020-12-09 06:08:21,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:08:21,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667090903] [2020-12-09 06:08:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:08:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:08:21,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:08:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:08:21,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:08:22,030 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:08:22,030 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:08:22,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:08:22,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:08:22 BoogieIcfgContainer [2020-12-09 06:08:22,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:08:22,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:08:22,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:08:22,090 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:08:22,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:08:21" (3/4) ... [2020-12-09 06:08:22,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:08:22,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:08:22,095 INFO L168 Benchmark]: Toolchain (without parser) took 1984.10 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 71.6 MB in the beginning and 87.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:22,095 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:08:22,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.77 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 81.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:22,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 109.1 MB. Free memory was 81.8 MB in the beginning and 78.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:22,097 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:22,098 INFO L168 Benchmark]: RCFGBuilder took 785.93 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 82.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:22,098 INFO L168 Benchmark]: TraceAbstraction took 877.04 ms. Allocated memory is still 132.1 MB. Free memory was 82.6 MB in the beginning and 87.0 MB in the end (delta: -4.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:08:22,099 INFO L168 Benchmark]: Witness Printer took 3.61 ms. Allocated memory is still 132.1 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:08:22,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.77 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 81.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 109.1 MB. Free memory was 81.8 MB in the beginning and 78.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 785.93 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 82.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 877.04 ms. Allocated memory is still 132.1 MB. Free memory was 82.6 MB in the beginning and 87.0 MB in the end (delta: -4.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.61 ms. Allocated memory is still 132.1 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 FALSE !(s__info_callback != 0) [L79] COND FALSE !(s__ctx__info_callback != 0) [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 FALSE !(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, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 375 SDtfs, 16 SDslu, 138 SDs, 0 SdLazy, 256 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 15/15 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:08:23,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:08:23,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:08:23,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:08:23,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:08:23,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:08:23,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:08:23,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:08:23,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:08:23,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:08:23,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:08:23,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:08:23,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:08:23,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:08:23,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:08:23,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:08:23,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:08:23,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:08:23,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:08:23,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:08:23,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:08:23,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:08:23,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:08:23,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:08:23,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:08:23,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:08:23,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:08:23,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:08:23,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:08:23,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:08:23,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:08:23,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:08:23,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:08:23,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:08:23,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:08:23,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:08:23,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:08:23,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:08:23,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:08:23,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:08:23,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:08:23,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 06:08:23,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:08:23,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:08:23,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:08:23,705 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:08:23,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:08:23,706 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:08:23,706 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:08:23,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:08:23,707 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:08:23,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:08:23,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:08:23,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:08:23,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:08:23,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:08:23,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:08:23,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:08:23,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:08:23,709 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:08:23,709 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:08:23,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:08:23,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:08:23,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:08:23,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:08:23,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:08:23,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:08:23,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:08:23,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:08:23,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:08:23,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:08:23,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:08:23,711 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:08:23,711 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:08:23,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:08:23,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:08:23,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:08:23,711 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-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9738a6698dfc65e1ff903e1e31cda8a1b59d676d [2020-12-09 06:08:23,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:08:23,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:08:23,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:08:23,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:08:23,960 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:08:23,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-12-09 06:08:24,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/576adb0a7/1c90ecfae28d4aa88ee209624012d796/FLAG033797d10 [2020-12-09 06:08:24,403 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:08:24,403 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-12-09 06:08:24,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/576adb0a7/1c90ecfae28d4aa88ee209624012d796/FLAG033797d10 [2020-12-09 06:08:24,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/data/576adb0a7/1c90ecfae28d4aa88ee209624012d796 [2020-12-09 06:08:24,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:08:24,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:08:24,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:08:24,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:08:24,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:08:24,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ada123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24, skipping insertion in model container [2020-12-09 06:08:24,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:08:24,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:08:24,602 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2020-12-09 06:08:24,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:08:24,630 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:08:24,667 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2020-12-09 06:08:24,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:08:24,679 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:08:24,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24 WrapperNode [2020-12-09 06:08:24,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:08:24,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:08:24,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:08:24,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:08:24,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:08:24,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:08:24,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:08:24,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:08:24,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... [2020-12-09 06:08:24,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:08:24,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:08:24,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:08:24,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:08:24,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:08:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:08:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:08:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:08:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:08:24,922 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 06:08:25,251 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-12-09 06:08:25,251 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-12-09 06:08:25,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:08:25,257 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:08:25,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:08:25 BoogieIcfgContainer [2020-12-09 06:08:25,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:08:25,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:08:25,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:08:25,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:08:25,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:08:24" (1/3) ... [2020-12-09 06:08:25,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7379ed1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:08:25, skipping insertion in model container [2020-12-09 06:08:25,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:08:24" (2/3) ... [2020-12-09 06:08:25,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7379ed1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:08:25, skipping insertion in model container [2020-12-09 06:08:25,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:08:25" (3/3) ... [2020-12-09 06:08:25,264 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-12-09 06:08:25,273 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:08:25,276 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:08:25,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:08:25,300 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:08:25,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:08:25,300 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:08:25,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:08:25,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:08:25,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:08:25,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:08:25,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:08:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-12-09 06:08:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 06:08:25,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:25,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:08:25,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:25,320 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2020-12-09 06:08:25,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:25,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585905032] [2020-12-09 06:08:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:25,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:25,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:08:25,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:25,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585905032] [2020-12-09 06:08:25,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:25,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:25,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164410669] [2020-12-09 06:08:25,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:25,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:25,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:25,471 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2020-12-09 06:08:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:25,607 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2020-12-09 06:08:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:25,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-09 06:08:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:25,617 INFO L225 Difference]: With dead ends: 247 [2020-12-09 06:08:25,617 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 06:08:25,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 06:08:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-12-09 06:08:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-09 06:08:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2020-12-09 06:08:25,655 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2020-12-09 06:08:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:25,655 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2020-12-09 06:08:25,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2020-12-09 06:08:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 06:08:25,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:25,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:08:25,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:08:25,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:25,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2020-12-09 06:08:25,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:25,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371176133] [2020-12-09 06:08:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:26,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:26,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:08:26,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:26,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371176133] [2020-12-09 06:08:26,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:26,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:26,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605318981] [2020-12-09 06:08:26,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:26,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:26,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:26,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:26,063 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2020-12-09 06:08:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:26,202 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-12-09 06:08:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:26,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-09 06:08:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:26,204 INFO L225 Difference]: With dead ends: 233 [2020-12-09 06:08:26,205 INFO L226 Difference]: Without dead ends: 131 [2020-12-09 06:08:26,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-09 06:08:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-12-09 06:08:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-09 06:08:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2020-12-09 06:08:26,214 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2020-12-09 06:08:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:26,215 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2020-12-09 06:08:26,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2020-12-09 06:08:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-09 06:08:26,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:26,216 INFO L422 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] [2020-12-09 06:08:26,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:08:26,419 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:26,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2020-12-09 06:08:26,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:26,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498202716] [2020-12-09 06:08:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:26,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:26,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 06:08:26,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:26,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498202716] [2020-12-09 06:08:26,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:26,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:26,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122754548] [2020-12-09 06:08:26,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:26,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:26,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:26,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:26,667 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2020-12-09 06:08:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:26,686 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2020-12-09 06:08:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:26,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-09 06:08:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:26,688 INFO L225 Difference]: With dead ends: 271 [2020-12-09 06:08:26,688 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 06:08:26,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 06:08:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-12-09 06:08:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-09 06:08:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2020-12-09 06:08:26,698 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2020-12-09 06:08:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:26,698 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2020-12-09 06:08:26,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2020-12-09 06:08:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-09 06:08:26,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:26,700 INFO L422 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] [2020-12-09 06:08:26,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:08:26,901 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:26,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2020-12-09 06:08:26,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:26,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597209481] [2020-12-09 06:08:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:27,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:27,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 06:08:27,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:27,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597209481] [2020-12-09 06:08:27,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:27,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:27,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700410939] [2020-12-09 06:08:27,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:27,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:27,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:27,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:27,068 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2020-12-09 06:08:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:27,188 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2020-12-09 06:08:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:27,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-09 06:08:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:27,190 INFO L225 Difference]: With dead ends: 292 [2020-12-09 06:08:27,190 INFO L226 Difference]: Without dead ends: 175 [2020-12-09 06:08:27,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-09 06:08:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-12-09 06:08:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-12-09 06:08:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-12-09 06:08:27,201 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2020-12-09 06:08:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:27,201 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-12-09 06:08:27,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-12-09 06:08:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-09 06:08:27,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:27,204 INFO L422 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] [2020-12-09 06:08:27,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 06:08:27,406 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2020-12-09 06:08:27,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:27,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735874092] [2020-12-09 06:08:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:27,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:08:27,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:27,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:08:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:27,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735874092] [2020-12-09 06:08:27,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1187764470] [2020-12-09 06:08:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:08:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:27,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:08:27,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:28,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:08:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:28,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037065053] [2020-12-09 06:08:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:08:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:28,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:08:28,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:28,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:08:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:28,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:08:28,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2020-12-09 06:08:28,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891364672] [2020-12-09 06:08:28,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:08:28,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:28,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:08:28,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:08:28,353 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand 6 states. [2020-12-09 06:08:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:28,733 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2020-12-09 06:08:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:08:28,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-09 06:08:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:28,735 INFO L225 Difference]: With dead ends: 566 [2020-12-09 06:08:28,735 INFO L226 Difference]: Without dead ends: 431 [2020-12-09 06:08:28,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 395 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:08:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-12-09 06:08:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2020-12-09 06:08:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-12-09 06:08:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2020-12-09 06:08:28,753 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2020-12-09 06:08:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:28,753 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2020-12-09 06:08:28,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:08:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2020-12-09 06:08:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-09 06:08:28,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:28,756 INFO L422 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] [2020-12-09 06:08:29,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:08:29,359 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:29,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:29,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2020-12-09 06:08:29,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:29,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169746252] [2020-12-09 06:08:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:29,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:29,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:29,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:29,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169746252] [2020-12-09 06:08:29,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:29,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:29,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417023155] [2020-12-09 06:08:29,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:29,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:29,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:29,476 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand 3 states. [2020-12-09 06:08:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:29,502 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2020-12-09 06:08:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:29,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-09 06:08:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:29,508 INFO L225 Difference]: With dead ends: 927 [2020-12-09 06:08:29,509 INFO L226 Difference]: Without dead ends: 574 [2020-12-09 06:08:29,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-12-09 06:08:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-12-09 06:08:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-12-09 06:08:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2020-12-09 06:08:29,524 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2020-12-09 06:08:29,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:29,525 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2020-12-09 06:08:29,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2020-12-09 06:08:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-09 06:08:29,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:29,526 INFO L422 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] [2020-12-09 06:08:29,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 06:08:29,728 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:29,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:29,729 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2020-12-09 06:08:29,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:29,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997134554] [2020-12-09 06:08:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:29,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:29,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:29,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:29,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997134554] [2020-12-09 06:08:29,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:29,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:29,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257364807] [2020-12-09 06:08:29,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:29,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:29,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:29,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:29,835 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand 3 states. [2020-12-09 06:08:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:29,854 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2020-12-09 06:08:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:29,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-09 06:08:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:29,857 INFO L225 Difference]: With dead ends: 576 [2020-12-09 06:08:29,857 INFO L226 Difference]: Without dead ends: 419 [2020-12-09 06:08:29,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-12-09 06:08:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2020-12-09 06:08:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-12-09 06:08:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2020-12-09 06:08:29,872 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2020-12-09 06:08:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:29,872 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2020-12-09 06:08:29,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2020-12-09 06:08:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-09 06:08:29,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:29,873 INFO L422 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] [2020-12-09 06:08:30,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 06:08:30,075 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:30,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2020-12-09 06:08:30,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:30,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721179894] [2020-12-09 06:08:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:30,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:08:30,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 06:08:30,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:08:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 06:08:30,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721179894] [2020-12-09 06:08:30,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [852076744] [2020-12-09 06:08:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:08:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:30,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:08:30,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 06:08:30,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:08:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 06:08:30,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582148091] [2020-12-09 06:08:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:08:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:30,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:08:30,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:30,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:08:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:08:30,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:08:30,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 4, 4] total 14 [2020-12-09 06:08:30,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171153617] [2020-12-09 06:08:30,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 06:08:30,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:30,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 06:08:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-12-09 06:08:30,817 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand 14 states. [2020-12-09 06:08:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:32,159 INFO L93 Difference]: Finished difference Result 1191 states and 1790 transitions. [2020-12-09 06:08:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 06:08:32,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-12-09 06:08:32,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:32,164 INFO L225 Difference]: With dead ends: 1191 [2020-12-09 06:08:32,164 INFO L226 Difference]: Without dead ends: 831 [2020-12-09 06:08:32,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-12-09 06:08:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-12-09 06:08:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 554. [2020-12-09 06:08:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-12-09 06:08:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 769 transitions. [2020-12-09 06:08:32,188 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 769 transitions. Word has length 68 [2020-12-09 06:08:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:32,188 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 769 transitions. [2020-12-09 06:08:32,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 06:08:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 769 transitions. [2020-12-09 06:08:32,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-09 06:08:32,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:32,190 INFO L422 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] [2020-12-09 06:08:32,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3,12 cvc4 --incremental --print-success --lang smt [2020-12-09 06:08:32,793 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:32,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2020-12-09 06:08:32,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:32,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715089966] [2020-12-09 06:08:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:32,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:32,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 06:08:33,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:33,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715089966] [2020-12-09 06:08:33,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:33,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:33,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703162851] [2020-12-09 06:08:33,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:33,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:33,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:33,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:33,019 INFO L87 Difference]: Start difference. First operand 554 states and 769 transitions. Second operand 3 states. [2020-12-09 06:08:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:33,109 INFO L93 Difference]: Finished difference Result 1090 states and 1537 transitions. [2020-12-09 06:08:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:33,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-09 06:08:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:33,112 INFO L225 Difference]: With dead ends: 1090 [2020-12-09 06:08:33,112 INFO L226 Difference]: Without dead ends: 602 [2020-12-09 06:08:33,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-12-09 06:08:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 596. [2020-12-09 06:08:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-12-09 06:08:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 821 transitions. [2020-12-09 06:08:33,130 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 821 transitions. Word has length 85 [2020-12-09 06:08:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:33,130 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 821 transitions. [2020-12-09 06:08:33,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 821 transitions. [2020-12-09 06:08:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 06:08:33,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:33,131 INFO L422 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] [2020-12-09 06:08:33,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 06:08:33,332 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2020-12-09 06:08:33,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:33,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66306201] [2020-12-09 06:08:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:08:33,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:08:33,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:08:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 06:08:33,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:08:33,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66306201] [2020-12-09 06:08:33,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:08:33,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:08:33,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246278179] [2020-12-09 06:08:33,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:08:33,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:08:33,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:08:33,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:33,470 INFO L87 Difference]: Start difference. First operand 596 states and 821 transitions. Second operand 3 states. [2020-12-09 06:08:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:08:33,515 INFO L93 Difference]: Finished difference Result 1652 states and 2289 transitions. [2020-12-09 06:08:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:08:33,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-09 06:08:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:08:33,522 INFO L225 Difference]: With dead ends: 1652 [2020-12-09 06:08:33,522 INFO L226 Difference]: Without dead ends: 1122 [2020-12-09 06:08:33,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:08:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-12-09 06:08:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1118. [2020-12-09 06:08:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-12-09 06:08:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1538 transitions. [2020-12-09 06:08:33,557 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1538 transitions. Word has length 104 [2020-12-09 06:08:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:08:33,557 INFO L481 AbstractCegarLoop]: Abstraction has 1118 states and 1538 transitions. [2020-12-09 06:08:33,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:08:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1538 transitions. [2020-12-09 06:08:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 06:08:33,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:08:33,558 INFO L422 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] [2020-12-09 06:08:33,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 06:08:33,759 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:08:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:08:33,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2020-12-09 06:08:33,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:08:33,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654161439] [2020-12-09 06:08:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-09 06:08:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:08:33,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:08:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:08:33,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:08:34,050 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 06:08:34,050 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:08:34,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 06:08:34,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:08:34 BoogieIcfgContainer [2020-12-09 06:08:34,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:08:34,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:08:34,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:08:34,337 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:08:34,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:08:25" (3/4) ... [2020-12-09 06:08:34,339 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 06:08:34,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8c4596f3-197f-42e8-9e2b-07de45c58f2b/bin/utaipan/witness.graphml [2020-12-09 06:08:34,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:08:34,421 INFO L168 Benchmark]: Toolchain (without parser) took 9996.76 ms. Allocated memory was 60.8 MB in the beginning and 111.1 MB in the end (delta: 50.3 MB). Free memory was 39.7 MB in the beginning and 68.0 MB in the end (delta: -28.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:34,422 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 43.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:08:34,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.43 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 41.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:34,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.18 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 38.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:34,423 INFO L168 Benchmark]: Boogie Preprocessor took 28.39 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 36.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:34,423 INFO L168 Benchmark]: RCFGBuilder took 511.87 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 36.8 MB in the beginning and 43.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:34,424 INFO L168 Benchmark]: TraceAbstraction took 9076.29 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 43.0 MB in the beginning and 80.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:34,424 INFO L168 Benchmark]: Witness Printer took 83.45 ms. Allocated memory is still 111.1 MB. Free memory was 80.5 MB in the beginning and 68.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:08:34,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 43.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.43 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 41.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.18 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 38.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.39 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 36.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 511.87 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 36.8 MB in the beginning and 43.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9076.29 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 43.0 MB in the beginning and 80.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. * Witness Printer took 83.45 ms. Allocated memory is still 111.1 MB. Free memory was 80.5 MB in the beginning and 68.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. VerificationResult: UNSAFE, OverallTime: 8.9s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1821 SDtfs, 2238 SDslu, 2183 SDs, 0 SdLazy, 2056 SolverSat, 386 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1302 GetRequests, 1258 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1118occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 310 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1001 NumberOfCodeBlocks, 1001 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1285 ConstructedInterpolants, 236 QuantifiedInterpolants, 338039 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1883 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 522/824 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...