./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:11:35,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:11:35,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:11:35,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:11:35,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:11:35,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:11:35,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:11:35,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:11:35,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:11:35,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:11:35,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:11:35,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:11:35,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:11:35,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:11:35,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:11:35,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:11:35,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:11:35,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:11:35,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:11:35,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:11:35,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:11:35,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:11:35,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:11:35,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:11:35,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:11:35,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:11:35,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:11:35,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:11:35,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:11:35,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:11:35,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:11:35,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:11:35,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:11:35,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:11:35,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:11:35,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:11:35,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:11:35,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:11:35,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:11:35,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:11:35,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:11:35,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:11:35,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:11:35,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:11:35,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:11:35,563 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:11:35,563 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:11:35,563 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:11:35,564 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:11:35,564 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:11:35,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:11:35,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:11:35,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:11:35,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:11:35,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:11:35,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:11:35,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:11:35,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:11:35,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:11:35,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:11:35,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:11:35,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:11:35,567 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:11:35,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:11:35,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:11:35,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:11:35,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:11:35,567 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_b1b83602-8793-473d-a8c8-96c98d3b8573/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-12-09 19:11:35,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:11:35,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:11:35,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:11:35,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:11:35,768 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:11:35,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-09 19:11:35,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/2a51888ca/c30be3f1be474a5bab8a34564193f56a/FLAGd525be8d4 [2020-12-09 19:11:36,186 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:11:36,187 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-09 19:11:36,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/2a51888ca/c30be3f1be474a5bab8a34564193f56a/FLAGd525be8d4 [2020-12-09 19:11:36,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/2a51888ca/c30be3f1be474a5bab8a34564193f56a [2020-12-09 19:11:36,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:11:36,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:11:36,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:11:36,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:11:36,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:11:36,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36, skipping insertion in model container [2020-12-09 19:11:36,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:11:36,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:11:36,344 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_b1b83602-8793-473d-a8c8-96c98d3b8573/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2020-12-09 19:11:36,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:11:36,390 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:11:36,398 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_b1b83602-8793-473d-a8c8-96c98d3b8573/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2020-12-09 19:11:36,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:11:36,427 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:11:36,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36 WrapperNode [2020-12-09 19:11:36,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:11:36,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:11:36,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:11:36,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:11:36,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:11:36,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:11:36,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:11:36,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:11:36,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... [2020-12-09 19:11:36,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:11:36,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:11:36,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:11:36,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:11:36,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:11:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:11:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:11:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:11:36,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:11:36,960 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-09 19:11:36,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:36 BoogieIcfgContainer [2020-12-09 19:11:36,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:11:36,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:11:36,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:11:36,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:11:36,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:11:36" (1/3) ... [2020-12-09 19:11:36,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580ad1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:36, skipping insertion in model container [2020-12-09 19:11:36,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:36" (2/3) ... [2020-12-09 19:11:36,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580ad1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:36, skipping insertion in model container [2020-12-09 19:11:36,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:36" (3/3) ... [2020-12-09 19:11:36,968 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-12-09 19:11:36,977 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:11:36,980 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 19:11:36,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 19:11:37,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:11:37,012 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:11:37,012 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:11:37,012 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:11:37,012 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:11:37,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:11:37,013 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:11:37,013 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:11:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-12-09 19:11:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 19:11:37,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:37,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:37,029 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash -242019376, now seen corresponding path program 1 times [2020-12-09 19:11:37,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:37,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600894812] [2020-12-09 19:11:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:37,207 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 19:11:37,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600894812] [2020-12-09 19:11:37,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:37,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 19:11:37,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529778264] [2020-12-09 19:11:37,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:11:37,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:37,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:11:37,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:11:37,222 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 6 states. [2020-12-09 19:11:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:37,341 INFO L93 Difference]: Finished difference Result 208 states and 302 transitions. [2020-12-09 19:11:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:11:37,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 19:11:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:37,354 INFO L225 Difference]: With dead ends: 208 [2020-12-09 19:11:37,354 INFO L226 Difference]: Without dead ends: 137 [2020-12-09 19:11:37,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:11:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-09 19:11:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2020-12-09 19:11:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-09 19:11:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2020-12-09 19:11:37,396 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 10 [2020-12-09 19:11:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:37,397 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2020-12-09 19:11:37,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:11:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2020-12-09 19:11:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 19:11:37,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:37,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:37,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:11:37,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:37,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1348999057, now seen corresponding path program 1 times [2020-12-09 19:11:37,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:37,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087747727] [2020-12-09 19:11:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:37,572 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 19:11:37,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087747727] [2020-12-09 19:11:37,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:37,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 19:11:37,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15812778] [2020-12-09 19:11:37,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 19:11:37,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:37,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 19:11:37,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 19:11:37,575 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand 10 states. [2020-12-09 19:11:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:37,810 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2020-12-09 19:11:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 19:11:37,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-12-09 19:11:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:37,812 INFO L225 Difference]: With dead ends: 144 [2020-12-09 19:11:37,812 INFO L226 Difference]: Without dead ends: 136 [2020-12-09 19:11:37,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-12-09 19:11:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-09 19:11:37,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-12-09 19:11:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 19:11:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2020-12-09 19:11:37,825 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 13 [2020-12-09 19:11:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:37,825 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2020-12-09 19:11:37,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 19:11:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2020-12-09 19:11:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 19:11:37,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:37,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:37,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:11:37,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:37,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:37,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1065932421, now seen corresponding path program 1 times [2020-12-09 19:11:37,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:37,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385869196] [2020-12-09 19:11:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:37,892 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 19:11:37,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385869196] [2020-12-09 19:11:37,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:37,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:11:37,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959306365] [2020-12-09 19:11:37,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:11:37,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:37,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:11:37,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:11:37,894 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand 5 states. [2020-12-09 19:11:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:37,959 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2020-12-09 19:11:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:11:37,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 19:11:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:37,961 INFO L225 Difference]: With dead ends: 144 [2020-12-09 19:11:37,961 INFO L226 Difference]: Without dead ends: 122 [2020-12-09 19:11:37,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:11:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-09 19:11:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2020-12-09 19:11:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-09 19:11:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-12-09 19:11:37,967 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 14 [2020-12-09 19:11:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:37,968 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-12-09 19:11:37,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:11:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-12-09 19:11:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 19:11:37,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:37,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:37,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:11:37,969 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1091264279, now seen corresponding path program 1 times [2020-12-09 19:11:37,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:37,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795401792] [2020-12-09 19:11:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:38,043 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 19:11:38,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795401792] [2020-12-09 19:11:38,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:38,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 19:11:38,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593864432] [2020-12-09 19:11:38,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:11:38,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:38,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:11:38,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:11:38,044 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 7 states. [2020-12-09 19:11:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:38,160 INFO L93 Difference]: Finished difference Result 249 states and 307 transitions. [2020-12-09 19:11:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:11:38,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-09 19:11:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:38,163 INFO L225 Difference]: With dead ends: 249 [2020-12-09 19:11:38,163 INFO L226 Difference]: Without dead ends: 229 [2020-12-09 19:11:38,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:11:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-12-09 19:11:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 92. [2020-12-09 19:11:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-09 19:11:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 125 transitions. [2020-12-09 19:11:38,175 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 125 transitions. Word has length 16 [2020-12-09 19:11:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:38,175 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 125 transitions. [2020-12-09 19:11:38,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:11:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 125 transitions. [2020-12-09 19:11:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 19:11:38,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:38,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:38,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:11:38,176 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:38,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1556554917, now seen corresponding path program 1 times [2020-12-09 19:11:38,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:38,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462530805] [2020-12-09 19:11:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:38,243 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 19:11:38,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462530805] [2020-12-09 19:11:38,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:38,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:11:38,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069083964] [2020-12-09 19:11:38,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:11:38,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:38,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:11:38,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:11:38,245 INFO L87 Difference]: Start difference. First operand 92 states and 125 transitions. Second operand 5 states. [2020-12-09 19:11:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:38,298 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2020-12-09 19:11:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:11:38,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 19:11:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:38,300 INFO L225 Difference]: With dead ends: 128 [2020-12-09 19:11:38,300 INFO L226 Difference]: Without dead ends: 108 [2020-12-09 19:11:38,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:11:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-09 19:11:38,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-12-09 19:11:38,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-09 19:11:38,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2020-12-09 19:11:38,308 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 16 [2020-12-09 19:11:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:38,308 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2020-12-09 19:11:38,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:11:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2020-12-09 19:11:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:11:38,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:38,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:38,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 19:11:38,310 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:38,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1697293124, now seen corresponding path program 1 times [2020-12-09 19:11:38,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:38,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217952974] [2020-12-09 19:11:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:38,541 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 19:11:38,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217952974] [2020-12-09 19:11:38,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:38,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 19:11:38,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895054010] [2020-12-09 19:11:38,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 19:11:38,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:38,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 19:11:38,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:11:38,543 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand 9 states. [2020-12-09 19:11:38,946 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-12-09 19:11:39,165 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-12-09 19:11:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:39,249 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-12-09 19:11:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 19:11:39,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-09 19:11:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:39,251 INFO L225 Difference]: With dead ends: 100 [2020-12-09 19:11:39,251 INFO L226 Difference]: Without dead ends: 82 [2020-12-09 19:11:39,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-09 19:11:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-09 19:11:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-12-09 19:11:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 19:11:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-12-09 19:11:39,255 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 17 [2020-12-09 19:11:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:39,255 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-12-09 19:11:39,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 19:11:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-12-09 19:11:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:11:39,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:39,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:39,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 19:11:39,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:39,257 INFO L82 PathProgramCache]: Analyzing trace with hash -530507776, now seen corresponding path program 1 times [2020-12-09 19:11:39,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:39,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928311257] [2020-12-09 19:11:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:39,387 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 19:11:39,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928311257] [2020-12-09 19:11:39,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:39,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 19:11:39,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959695517] [2020-12-09 19:11:39,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 19:11:39,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 19:11:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:11:39,389 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 9 states. [2020-12-09 19:11:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:40,315 INFO L93 Difference]: Finished difference Result 287 states and 342 transitions. [2020-12-09 19:11:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-09 19:11:40,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-09 19:11:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:40,317 INFO L225 Difference]: With dead ends: 287 [2020-12-09 19:11:40,317 INFO L226 Difference]: Without dead ends: 275 [2020-12-09 19:11:40,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-12-09 19:11:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-09 19:11:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 95. [2020-12-09 19:11:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-09 19:11:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 128 transitions. [2020-12-09 19:11:40,326 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 128 transitions. Word has length 17 [2020-12-09 19:11:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:40,326 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 128 transitions. [2020-12-09 19:11:40,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 19:11:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 128 transitions. [2020-12-09 19:11:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:11:40,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:40,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:40,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 19:11:40,328 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:40,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1008524228, now seen corresponding path program 1 times [2020-12-09 19:11:40,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:40,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33060606] [2020-12-09 19:11:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:40,510 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 19:11:40,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33060606] [2020-12-09 19:11:40,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:40,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 19:11:40,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180274747] [2020-12-09 19:11:40,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:11:40,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:11:40,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:11:40,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 19:11:40,512 INFO L87 Difference]: Start difference. First operand 95 states and 128 transitions. Second operand 8 states. [2020-12-09 19:11:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:40,743 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2020-12-09 19:11:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 19:11:40,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-09 19:11:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:40,744 INFO L225 Difference]: With dead ends: 109 [2020-12-09 19:11:40,744 INFO L226 Difference]: Without dead ends: 101 [2020-12-09 19:11:40,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:11:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-09 19:11:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-12-09 19:11:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-09 19:11:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2020-12-09 19:11:40,752 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 17 [2020-12-09 19:11:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:40,752 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2020-12-09 19:11:40,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:11:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2020-12-09 19:11:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 19:11:40,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:40,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:40,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 19:11:40,753 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:40,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:40,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1364204554, now seen corresponding path program 1 times [2020-12-09 19:11:40,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:11:40,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458438296] [2020-12-09 19:11:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:11:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:11:40,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:11:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:11:40,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:11:40,808 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:11:40,808 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:11:40,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 19:11:40,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:11:40 BoogieIcfgContainer [2020-12-09 19:11:40,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:11:40,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:11:40,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:11:40,832 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:11:40,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:36" (3/4) ... [2020-12-09 19:11:40,834 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:11:40,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:11:40,835 INFO L168 Benchmark]: Toolchain (without parser) took 4627.70 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 67.1 MB in the beginning and 60.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:40,835 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 104.9 MB. Free memory was 83.8 MB in the beginning and 83.7 MB in the end (delta: 78.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:11:40,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.19 ms. Allocated memory is still 104.9 MB. Free memory was 66.9 MB in the beginning and 78.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:40,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 104.9 MB. Free memory was 78.3 MB in the beginning and 76.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:40,837 INFO L168 Benchmark]: Boogie Preprocessor took 33.40 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 74.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:40,837 INFO L168 Benchmark]: RCFGBuilder took 457.20 ms. Allocated memory is still 104.9 MB. Free memory was 74.1 MB in the beginning and 71.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:40,837 INFO L168 Benchmark]: TraceAbstraction took 3868.13 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 70.8 MB in the beginning and 60.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:40,838 INFO L168 Benchmark]: Witness Printer took 2.59 ms. Allocated memory is still 151.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:11:40,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 104.9 MB. Free memory was 83.8 MB in the beginning and 83.7 MB in the end (delta: 78.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 219.19 ms. Allocated memory is still 104.9 MB. Free memory was 66.9 MB in the beginning and 78.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 104.9 MB. Free memory was 78.3 MB in the beginning and 76.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.40 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 74.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 457.20 ms. Allocated memory is still 104.9 MB. Free memory was 74.1 MB in the beginning and 71.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3868.13 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 70.8 MB in the beginning and 60.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.59 ms. Allocated memory is still 151.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: 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 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 911 SDslu, 3512 SDs, 0 SdLazy, 736 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=1, 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, 8 MinimizatonAttempts, 474 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 8683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 19:11:42,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:11:42,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:11:42,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:11:42,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:11:42,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:11:42,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:11:42,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:11:42,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:11:42,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:11:42,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:11:42,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:11:42,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:11:42,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:11:42,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:11:42,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:11:42,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:11:42,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:11:42,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:11:42,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:11:42,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:11:42,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:11:42,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:11:42,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:11:42,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:11:42,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:11:42,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:11:42,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:11:42,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:11:42,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:11:42,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:11:42,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:11:42,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:11:42,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:11:42,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:11:42,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:11:42,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:11:42,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:11:42,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:11:42,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:11:42,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:11:42,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:11:42,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:11:42,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:11:42,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:11:42,484 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:11:42,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:11:42,484 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:11:42,484 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:11:42,484 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:11:42,484 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:11:42,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:11:42,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:11:42,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:11:42,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:11:42,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:11:42,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:11:42,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:11:42,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:11:42,486 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:11:42,486 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:11:42,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:11:42,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:11:42,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:11:42,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:11:42,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:11:42,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:11:42,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:11:42,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:11:42,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:11:42,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:11:42,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:11:42,488 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:11:42,488 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:11:42,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:11:42,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:11:42,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:11:42,489 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_b1b83602-8793-473d-a8c8-96c98d3b8573/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-12-09 19:11:42,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:11:42,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:11:42,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:11:42,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:11:42,720 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:11:42,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-09 19:11:42,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/29c96b4bb/704d7c5b0be64b6f957ee6b03d2893d4/FLAGfb7ccead1 [2020-12-09 19:11:43,175 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:11:43,175 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-09 19:11:43,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/29c96b4bb/704d7c5b0be64b6f957ee6b03d2893d4/FLAGfb7ccead1 [2020-12-09 19:11:43,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/data/29c96b4bb/704d7c5b0be64b6f957ee6b03d2893d4 [2020-12-09 19:11:43,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:11:43,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:11:43,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:11:43,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:11:43,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:11:43,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a200f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43, skipping insertion in model container [2020-12-09 19:11:43,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:11:43,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:11:43,314 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_b1b83602-8793-473d-a8c8-96c98d3b8573/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2020-12-09 19:11:43,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:11:43,361 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:11:43,376 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_b1b83602-8793-473d-a8c8-96c98d3b8573/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2020-12-09 19:11:43,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:11:43,407 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:11:43,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43 WrapperNode [2020-12-09 19:11:43,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:11:43,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:11:43,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:11:43,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:11:43,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:11:43,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:11:43,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:11:43,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:11:43,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... [2020-12-09 19:11:43,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:11:43,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:11:43,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:11:43,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:11:43,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:43,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:11:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:11:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:11:43,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:11:43,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:11:43,899 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-09 19:11:43,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:43 BoogieIcfgContainer [2020-12-09 19:11:43,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:11:43,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:11:43,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:11:43,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:11:43,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:11:43" (1/3) ... [2020-12-09 19:11:43,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722f681f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:43, skipping insertion in model container [2020-12-09 19:11:43,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:43" (2/3) ... [2020-12-09 19:11:43,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722f681f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:43, skipping insertion in model container [2020-12-09 19:11:43,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:43" (3/3) ... [2020-12-09 19:11:43,906 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-12-09 19:11:43,915 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:11:43,918 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 19:11:43,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 19:11:43,947 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:11:43,947 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:11:43,947 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:11:43,947 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:11:43,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:11:43,947 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:11:43,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:11:43,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:11:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-12-09 19:11:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 19:11:43,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:43,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:11:43,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-12-09 19:11:43,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:43,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241156455] [2020-12-09 19:11:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:44,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:11:44,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:44,100 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 19:11:44,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:44,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241156455] [2020-12-09 19:11:44,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:44,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:11:44,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818291342] [2020-12-09 19:11:44,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:11:44,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:44,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:11:44,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:11:44,116 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 5 states. [2020-12-09 19:11:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:44,225 INFO L93 Difference]: Finished difference Result 231 states and 333 transitions. [2020-12-09 19:11:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:11:44,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 19:11:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:44,233 INFO L225 Difference]: With dead ends: 231 [2020-12-09 19:11:44,233 INFO L226 Difference]: Without dead ends: 139 [2020-12-09 19:11:44,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:11:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-09 19:11:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-12-09 19:11:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-09 19:11:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-12-09 19:11:44,265 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-12-09 19:11:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:44,265 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-12-09 19:11:44,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:11:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-12-09 19:11:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 19:11:44,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:44,267 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 19:11:44,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:11:44,468 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:44,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:44,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1518313747, now seen corresponding path program 1 times [2020-12-09 19:11:44,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:44,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738819305] [2020-12-09 19:11:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:44,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:11:44,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:44,549 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 19:11:44,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:44,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738819305] [2020-12-09 19:11:44,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:44,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 19:11:44,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885106511] [2020-12-09 19:11:44,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:11:44,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:44,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:11:44,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:11:44,552 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-12-09 19:11:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:44,710 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-12-09 19:11:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 19:11:44,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 19:11:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:44,712 INFO L225 Difference]: With dead ends: 226 [2020-12-09 19:11:44,712 INFO L226 Difference]: Without dead ends: 200 [2020-12-09 19:11:44,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-09 19:11:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-09 19:11:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-12-09 19:11:44,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-09 19:11:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-12-09 19:11:44,725 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-12-09 19:11:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:44,725 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-12-09 19:11:44,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:11:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-12-09 19:11:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 19:11:44,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:44,726 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 19:11:44,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:11:44,927 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:44,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-12-09 19:11:44,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:44,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689843842] [2020-12-09 19:11:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:45,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:11:45,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:45,068 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 19:11:45,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:45,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689843842] [2020-12-09 19:11:45,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:45,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 19:11:45,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81350769] [2020-12-09 19:11:45,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:11:45,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:45,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:11:45,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:11:45,070 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-12-09 19:11:45,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:45,267 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-12-09 19:11:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 19:11:45,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-09 19:11:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:45,269 INFO L225 Difference]: With dead ends: 214 [2020-12-09 19:11:45,269 INFO L226 Difference]: Without dead ends: 185 [2020-12-09 19:11:45,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-12-09 19:11:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-09 19:11:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-12-09 19:11:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-09 19:11:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-12-09 19:11:45,282 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-12-09 19:11:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:45,283 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-12-09 19:11:45,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:11:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-12-09 19:11:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 19:11:45,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:45,284 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] [2020-12-09 19:11:45,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 19:11:45,486 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:45,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:45,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1649339140, now seen corresponding path program 1 times [2020-12-09 19:11:45,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:45,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73886538] [2020-12-09 19:11:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:45,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 19:11:45,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:45,687 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 19:11:45,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:45,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73886538] [2020-12-09 19:11:45,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:45,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 19:11:45,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464016186] [2020-12-09 19:11:45,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 19:11:45,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:45,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 19:11:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:11:45,689 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-12-09 19:11:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:45,905 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-12-09 19:11:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 19:11:45,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-09 19:11:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:45,907 INFO L225 Difference]: With dead ends: 183 [2020-12-09 19:11:45,907 INFO L226 Difference]: Without dead ends: 179 [2020-12-09 19:11:45,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-12-09 19:11:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-09 19:11:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-12-09 19:11:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-09 19:11:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-12-09 19:11:45,916 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-12-09 19:11:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:45,917 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-12-09 19:11:45,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 19:11:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-12-09 19:11:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 19:11:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:45,918 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] [2020-12-09 19:11:46,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 19:11:46,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:46,120 INFO L82 PathProgramCache]: Analyzing trace with hash 207332738, now seen corresponding path program 1 times [2020-12-09 19:11:46,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:46,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895544553] [2020-12-09 19:11:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:46,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:11:46,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:46,222 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 19:11:46,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:46,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895544553] [2020-12-09 19:11:46,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:46,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 19:11:46,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338950809] [2020-12-09 19:11:46,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:11:46,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:46,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:11:46,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:11:46,228 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-12-09 19:11:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:46,331 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-12-09 19:11:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:11:46,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-09 19:11:46,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:46,332 INFO L225 Difference]: With dead ends: 182 [2020-12-09 19:11:46,332 INFO L226 Difference]: Without dead ends: 149 [2020-12-09 19:11:46,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-09 19:11:46,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-09 19:11:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-12-09 19:11:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-09 19:11:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-12-09 19:11:46,339 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-12-09 19:11:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:46,339 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-12-09 19:11:46,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:11:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-12-09 19:11:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 19:11:46,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:46,340 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] [2020-12-09 19:11:46,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 19:11:46,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-12-09 19:11:46,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:46,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368646002] [2020-12-09 19:11:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 19:11:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:46,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 19:11:46,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:46,637 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 19:11:46,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:46,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368646002] [2020-12-09 19:11:46,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:46,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 19:11:46,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690777254] [2020-12-09 19:11:46,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:11:46,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:46,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:11:46,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:11:46,639 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 6 states. [2020-12-09 19:11:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:46,804 INFO L93 Difference]: Finished difference Result 345 states and 433 transitions. [2020-12-09 19:11:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 19:11:46,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-09 19:11:46,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:46,806 INFO L225 Difference]: With dead ends: 345 [2020-12-09 19:11:46,806 INFO L226 Difference]: Without dead ends: 299 [2020-12-09 19:11:46,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-09 19:11:46,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-09 19:11:46,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 133. [2020-12-09 19:11:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-09 19:11:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2020-12-09 19:11:46,814 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 23 [2020-12-09 19:11:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:46,814 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2020-12-09 19:11:46,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:11:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2020-12-09 19:11:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 19:11:46,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:46,816 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] [2020-12-09 19:11:47,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 19:11:47,017 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:47,018 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2020-12-09 19:11:47,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:47,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500047828] [2020-12-09 19:11:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 19:11:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:47,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 19:11:47,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:47,211 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 19:11:47,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:47,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500047828] [2020-12-09 19:11:47,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:47,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 19:11:47,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536851025] [2020-12-09 19:11:47,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:11:47,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:47,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:11:47,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:11:47,214 INFO L87 Difference]: Start difference. First operand 133 states and 176 transitions. Second operand 7 states. [2020-12-09 19:11:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:47,453 INFO L93 Difference]: Finished difference Result 297 states and 374 transitions. [2020-12-09 19:11:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 19:11:47,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-09 19:11:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:47,455 INFO L225 Difference]: With dead ends: 297 [2020-12-09 19:11:47,455 INFO L226 Difference]: Without dead ends: 295 [2020-12-09 19:11:47,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:11:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-09 19:11:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 135. [2020-12-09 19:11:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-09 19:11:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 179 transitions. [2020-12-09 19:11:47,465 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 179 transitions. Word has length 23 [2020-12-09 19:11:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:47,465 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 179 transitions. [2020-12-09 19:11:47,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:11:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 179 transitions. [2020-12-09 19:11:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 19:11:47,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:47,466 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] [2020-12-09 19:11:47,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 19:11:47,668 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:47,668 INFO L82 PathProgramCache]: Analyzing trace with hash 66201517, now seen corresponding path program 1 times [2020-12-09 19:11:47,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:47,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966424116] [2020-12-09 19:11:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:47,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 19:11:47,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:47,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:11:47,748 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 19:11:47,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:47,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966424116] [2020-12-09 19:11:47,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:47,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:11:47,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675785217] [2020-12-09 19:11:47,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:11:47,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:11:47,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:11:47,750 INFO L87 Difference]: Start difference. First operand 135 states and 179 transitions. Second operand 4 states. [2020-12-09 19:11:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:47,842 INFO L93 Difference]: Finished difference Result 184 states and 237 transitions. [2020-12-09 19:11:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:11:47,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-09 19:11:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:47,844 INFO L225 Difference]: With dead ends: 184 [2020-12-09 19:11:47,844 INFO L226 Difference]: Without dead ends: 180 [2020-12-09 19:11:47,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:11:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-09 19:11:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 137. [2020-12-09 19:11:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-09 19:11:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2020-12-09 19:11:47,850 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 23 [2020-12-09 19:11:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:47,850 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2020-12-09 19:11:47,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:11:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2020-12-09 19:11:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 19:11:47,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:47,851 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] [2020-12-09 19:11:48,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 19:11:48,053 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:48,054 INFO L82 PathProgramCache]: Analyzing trace with hash 66261099, now seen corresponding path program 1 times [2020-12-09 19:11:48,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:48,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52573181] [2020-12-09 19:11:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:48,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:11:48,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:48,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:11:48,173 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 19:11:48,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:48,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52573181] [2020-12-09 19:11:48,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:48,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:11:48,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124730783] [2020-12-09 19:11:48,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:11:48,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:48,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:11:48,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:11:48,174 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand 4 states. [2020-12-09 19:11:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:48,232 INFO L93 Difference]: Finished difference Result 137 states and 182 transitions. [2020-12-09 19:11:48,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:11:48,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-09 19:11:48,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:48,233 INFO L225 Difference]: With dead ends: 137 [2020-12-09 19:11:48,233 INFO L226 Difference]: Without dead ends: 133 [2020-12-09 19:11:48,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:11:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-09 19:11:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2020-12-09 19:11:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-09 19:11:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-12-09 19:11:48,239 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-12-09 19:11:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:48,239 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-12-09 19:11:48,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:11:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-12-09 19:11:48,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 19:11:48,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:48,239 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 19:11:48,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 19:11:48,441 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:48,443 INFO L82 PathProgramCache]: Analyzing trace with hash -120407082, now seen corresponding path program 1 times [2020-12-09 19:11:48,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:48,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761089509] [2020-12-09 19:11:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/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 19:11:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:48,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 19:11:48,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:48,564 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 19:11:48,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:48,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761089509] [2020-12-09 19:11:48,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:48,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 19:11:48,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329511901] [2020-12-09 19:11:48,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 19:11:48,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:48,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 19:11:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:11:48,566 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-12-09 19:11:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:48,765 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-12-09 19:11:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 19:11:48,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-09 19:11:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:48,766 INFO L225 Difference]: With dead ends: 179 [2020-12-09 19:11:48,766 INFO L226 Difference]: Without dead ends: 174 [2020-12-09 19:11:48,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-12-09 19:11:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-09 19:11:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-12-09 19:11:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-09 19:11:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-12-09 19:11:48,773 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-12-09 19:11:48,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:48,773 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-12-09 19:11:48,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 19:11:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-12-09 19:11:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 19:11:48,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:48,773 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 19:11:48,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 19:11:48,975 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:48,977 INFO L82 PathProgramCache]: Analyzing trace with hash -118560040, now seen corresponding path program 1 times [2020-12-09 19:11:48,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:48,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911634299] [2020-12-09 19:11:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 19:11:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:11:49,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 19:11:49,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:11:49,132 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 19:11:49,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:11:49,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911634299] [2020-12-09 19:11:49,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:11:49,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:11:49,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2463357] [2020-12-09 19:11:49,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:11:49,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:11:49,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:11:49,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:11:49,134 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 5 states. [2020-12-09 19:11:49,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:11:49,181 INFO L93 Difference]: Finished difference Result 147 states and 190 transitions. [2020-12-09 19:11:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:11:49,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-09 19:11:49,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:11:49,182 INFO L225 Difference]: With dead ends: 147 [2020-12-09 19:11:49,182 INFO L226 Difference]: Without dead ends: 130 [2020-12-09 19:11:49,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:11:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-09 19:11:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-12-09 19:11:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-09 19:11:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-12-09 19:11:49,187 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-12-09 19:11:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:11:49,188 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-12-09 19:11:49,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:11:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-12-09 19:11:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 19:11:49,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:11:49,188 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 19:11:49,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 19:11:49,390 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:11:49,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:11:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash -390845998, now seen corresponding path program 1 times [2020-12-09 19:11:49,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:11:49,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668832503] [2020-12-09 19:11:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 19:11:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:11:49,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:11:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:11:49,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:11:49,595 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 19:11:49,596 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:11:49,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 19:11:49,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:11:49 BoogieIcfgContainer [2020-12-09 19:11:49,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:11:49,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:11:49,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:11:49,833 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:11:49,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:43" (3/4) ... [2020-12-09 19:11:49,835 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:11:49,882 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b1b83602-8793-473d-a8c8-96c98d3b8573/bin/utaipan/witness.graphml [2020-12-09 19:11:49,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:11:49,884 INFO L168 Benchmark]: Toolchain (without parser) took 6687.79 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 41.8 MB in the beginning and 35.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:49,884 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:11:49,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.63 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 42.2 MB in the end (delta: -702.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:49,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.87 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 39.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:49,886 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 38.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:49,886 INFO L168 Benchmark]: RCFGBuilder took 429.55 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 38.0 MB in the beginning and 40.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:49,887 INFO L168 Benchmark]: TraceAbstraction took 5929.89 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 39.7 MB in the beginning and 38.8 MB in the end (delta: 832.2 kB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:49,887 INFO L168 Benchmark]: Witness Printer took 50.73 ms. Allocated memory is still 94.4 MB. Free memory was 38.8 MB in the beginning and 35.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:11:49,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.63 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 42.2 MB in the end (delta: -702.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.87 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 39.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 38.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 429.55 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 38.0 MB in the beginning and 40.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5929.89 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 39.7 MB in the beginning and 38.8 MB in the end (delta: 832.2 kB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * Witness Printer took 50.73 ms. Allocated memory is still 94.4 MB. Free memory was 38.8 MB in the beginning and 35.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1369 SDtfs, 1753 SDslu, 5105 SDs, 0 SdLazy, 925 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred 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: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 700 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 9622 SizeOfPredicates, 58 NumberOfNonLiveVariables, 810 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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...