./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.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_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 7f8d72d06ca136037e1a4f2d3dda81b71758b03c ...................................................................................................................................................................................................................................................................................................... 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_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 7f8d72d06ca136037e1a4f2d3dda81b71758b03c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:54:01,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:54:01,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:54:01,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:54:01,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:54:01,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:54:01,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:54:01,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:54:01,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:54:01,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:54:01,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:54:01,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:54:01,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:54:01,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:54:01,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:54:01,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:54:01,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:54:01,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:54:01,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:54:01,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:54:01,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:54:01,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:54:01,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:54:01,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:54:01,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:54:01,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:54:01,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:54:01,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:54:01,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:54:01,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:54:01,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:54:01,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:54:01,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:54:01,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:54:01,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:54:01,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:54:01,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:54:01,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:54:01,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:54:01,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:54:01,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:54:01,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:54:01,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:54:01,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:54:01,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:54:01,624 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:54:01,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:54:01,624 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:54:01,624 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:54:01,625 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:54:01,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:54:01,625 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:54:01,625 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:54:01,625 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:54:01,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:54:01,626 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:54:01,626 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:54:01,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:54:01,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:54:01,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:54:01,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:54:01,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:54:01,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:54:01,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:54:01,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:54:01,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:54:01,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:54:01,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:54:01,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:54:01,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:54:01,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:54:01,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:54:01,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:54:01,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:54:01,630 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_7fcca235-91a1-404a-b5a6-566508220961/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f8d72d06ca136037e1a4f2d3dda81b71758b03c [2020-12-09 18:54:01,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:54:01,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:54:01,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:54:01,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:54:01,833 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:54:01,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-12-09 18:54:01,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/88b6b5d00/e40607597db4452a97bb65330bbd322c/FLAGb3a43b7f3 [2020-12-09 18:54:02,230 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:54:02,230 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-12-09 18:54:02,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/88b6b5d00/e40607597db4452a97bb65330bbd322c/FLAGb3a43b7f3 [2020-12-09 18:54:02,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/88b6b5d00/e40607597db4452a97bb65330bbd322c [2020-12-09 18:54:02,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:54:02,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:54:02,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:54:02,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:54:02,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:54:02,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02, skipping insertion in model container [2020-12-09 18:54:02,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:54:02,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:54:02,386 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_7fcca235-91a1-404a-b5a6-566508220961/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2020-12-09 18:54:02,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:54:02,395 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:54:02,410 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_7fcca235-91a1-404a-b5a6-566508220961/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2020-12-09 18:54:02,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:54:02,421 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:54:02,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02 WrapperNode [2020-12-09 18:54:02,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:54:02,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:54:02,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:54:02,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:54:02,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:54:02,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:54:02,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:54:02,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:54:02,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... [2020-12-09 18:54:02,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:54:02,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:54:02,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:54:02,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:54:02,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:54:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:54:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 18:54:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:54:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:54:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 18:54:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:54:02,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:54:02,974 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 18:54:02,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:02 BoogieIcfgContainer [2020-12-09 18:54:02,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:54:02,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:54:02,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:54:02,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:54:02,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:54:02" (1/3) ... [2020-12-09 18:54:02,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0bc1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:02, skipping insertion in model container [2020-12-09 18:54:02,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:02" (2/3) ... [2020-12-09 18:54:02,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0bc1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:02, skipping insertion in model container [2020-12-09 18:54:02,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:02" (3/3) ... [2020-12-09 18:54:02,982 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-12-09 18:54:02,992 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:54:02,994 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:54:03,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:54:03,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:54:03,019 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:54:03,019 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:54:03,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:54:03,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:54:03,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:54:03,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:54:03,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:54:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-09 18:54:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:54:03,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:03,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:54:03,033 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1290073606, now seen corresponding path program 1 times [2020-12-09 18:54:03,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:54:03,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887971372] [2020-12-09 18:54:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:54:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:03,138 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 18:54:03,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887971372] [2020-12-09 18:54:03,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:03,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:54:03,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323793271] [2020-12-09 18:54:03,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:54:03,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:54:03,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:54:03,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:54:03,153 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-09 18:54:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:03,163 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-12-09 18:54:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:54:03,164 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 18:54:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:03,169 INFO L225 Difference]: With dead ends: 35 [2020-12-09 18:54:03,170 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 18:54:03,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:54:03,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 18:54:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 18:54:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 18:54:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-09 18:54:03,198 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-12-09 18:54:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:03,198 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-09 18:54:03,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:54:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-09 18:54:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:54:03,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:03,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:54:03,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:54:03,199 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:03,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:03,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2020119981, now seen corresponding path program 1 times [2020-12-09 18:54:03,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:54:03,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116048873] [2020-12-09 18:54:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:54:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:54:03,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:54:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:54:03,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:54:03,283 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 18:54:03,283 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:54:03,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:54:03,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:54:03 BoogieIcfgContainer [2020-12-09 18:54:03,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:54:03,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:54:03,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:54:03,302 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:54:03,302 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:02" (3/4) ... [2020-12-09 18:54:03,304 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 18:54:03,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:54:03,306 INFO L168 Benchmark]: Toolchain (without parser) took 1058.24 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 85.4 MB in the beginning and 101.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:03,307 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 69.2 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:54:03,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.22 ms. Allocated memory is still 107.0 MB. Free memory was 85.0 MB in the beginning and 74.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:03,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.18 ms. Allocated memory is still 107.0 MB. Free memory was 74.7 MB in the beginning and 73.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:03,308 INFO L168 Benchmark]: Boogie Preprocessor took 19.02 ms. Allocated memory is still 107.0 MB. Free memory was 73.1 MB in the beginning and 71.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:03,309 INFO L168 Benchmark]: RCFGBuilder took 495.80 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 57.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:03,309 INFO L168 Benchmark]: TraceAbstraction took 324.57 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 57.3 MB in the beginning and 102.0 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:54:03,310 INFO L168 Benchmark]: Witness Printer took 2.89 ms. Allocated memory is still 130.0 MB. Free memory was 102.0 MB in the beginning and 101.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:54:03,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 69.2 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 174.22 ms. Allocated memory is still 107.0 MB. Free memory was 85.0 MB in the beginning and 74.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.18 ms. Allocated memory is still 107.0 MB. Free memory was 74.7 MB in the beginning and 73.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.02 ms. Allocated memory is still 107.0 MB. Free memory was 73.1 MB in the beginning and 71.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 495.80 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 57.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 324.57 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 57.3 MB in the beginning and 102.0 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.89 ms. Allocated memory is still 130.0 MB. Free memory was 102.0 MB in the beginning and 101.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L74] float x = -0.0f; [L75] float y = 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 18:54:05,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:54:05,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:54:05,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:54:05,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:54:05,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:54:05,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:54:05,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:54:05,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:54:05,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:54:05,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:54:05,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:54:05,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:54:05,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:54:05,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:54:05,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:54:05,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:54:05,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:54:05,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:54:05,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:54:05,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:54:05,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:54:05,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:54:05,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:54:05,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:54:05,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:54:05,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:54:05,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:54:05,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:54:05,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:54:05,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:54:05,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:54:05,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:54:05,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:54:05,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:54:05,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:54:05,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:54:05,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:54:05,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:54:05,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:54:05,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:54:05,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:54:05,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:54:05,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:54:05,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:54:05,109 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:54:05,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:54:05,110 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:54:05,110 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:54:05,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:54:05,110 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:54:05,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:54:05,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:54:05,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:54:05,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:54:05,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:54:05,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:54:05,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:54:05,111 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:54:05,112 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:54:05,112 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:54:05,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:54:05,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:54:05,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:54:05,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:54:05,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:54:05,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:54:05,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:54:05,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:54:05,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:54:05,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:54:05,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:54:05,113 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:54:05,113 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:54:05,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:54:05,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:54:05,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:54:05,114 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_7fcca235-91a1-404a-b5a6-566508220961/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f8d72d06ca136037e1a4f2d3dda81b71758b03c [2020-12-09 18:54:05,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:54:05,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:54:05,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:54:05,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:54:05,353 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:54:05,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-12-09 18:54:05,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/ce1985e4a/bcc154f603b54fe39ef6e1a0ed7828a1/FLAGf9ce2f1b4 [2020-12-09 18:54:05,775 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:54:05,776 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-12-09 18:54:05,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/ce1985e4a/bcc154f603b54fe39ef6e1a0ed7828a1/FLAGf9ce2f1b4 [2020-12-09 18:54:05,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/data/ce1985e4a/bcc154f603b54fe39ef6e1a0ed7828a1 [2020-12-09 18:54:05,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:54:05,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:54:05,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:54:05,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:54:05,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:54:05,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:05,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c6046b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05, skipping insertion in model container [2020-12-09 18:54:05,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:05,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:54:05,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:54:05,940 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_7fcca235-91a1-404a-b5a6-566508220961/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2020-12-09 18:54:05,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:54:05,952 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:54:05,968 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_7fcca235-91a1-404a-b5a6-566508220961/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2020-12-09 18:54:05,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:54:05,981 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:54:05,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05 WrapperNode [2020-12-09 18:54:05,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:54:05,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:54:05,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:54:05,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:54:05,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:05,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:54:06,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:54:06,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:54:06,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:54:06,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... [2020-12-09 18:54:06,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:54:06,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:54:06,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:54:06,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:54:06,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:54:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:54:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 18:54:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:54:06,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:54:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 18:54:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:54:06,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:54:06,385 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 18:54:06,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:06 BoogieIcfgContainer [2020-12-09 18:54:06,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:54:06,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:54:06,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:54:06,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:54:06,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:54:05" (1/3) ... [2020-12-09 18:54:06,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5575bd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:06, skipping insertion in model container [2020-12-09 18:54:06,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:05" (2/3) ... [2020-12-09 18:54:06,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5575bd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:06, skipping insertion in model container [2020-12-09 18:54:06,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:06" (3/3) ... [2020-12-09 18:54:06,394 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-12-09 18:54:06,406 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:54:06,409 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:54:06,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:54:06,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:54:06,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:54:06,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:54:06,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:54:06,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:54:06,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:54:06,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:54:06,442 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:54:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 18:54:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:54:06,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:06,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:54:06,459 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:06,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:06,464 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-09 18:54:06,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:06,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53604024] [2020-12-09 18:54:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:06,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:54:06,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:06,553 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 18:54:06,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:06,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53604024] [2020-12-09 18:54:06,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:06,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:54:06,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265795725] [2020-12-09 18:54:06,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:54:06,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:54:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:54:06,568 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 18:54:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:06,581 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-09 18:54:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:54:06,582 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 18:54:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:06,588 INFO L225 Difference]: With dead ends: 62 [2020-12-09 18:54:06,588 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 18:54:06,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:54:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 18:54:06,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 18:54:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 18:54:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-09 18:54:06,613 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-09 18:54:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:06,614 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-09 18:54:06,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:54:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-09 18:54:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:54:06,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:06,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:54:06,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:54:06,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:06,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:06,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-09 18:54:06,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:06,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904339849] [2020-12-09 18:54:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:06,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:54:06,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:06,896 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 18:54:06,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:06,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904339849] [2020-12-09 18:54:06,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:06,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:54:06,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597922204] [2020-12-09 18:54:06,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:54:06,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:06,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:54:06,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:54:06,900 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-09 18:54:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:06,949 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-09 18:54:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:54:06,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 18:54:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:06,951 INFO L225 Difference]: With dead ends: 53 [2020-12-09 18:54:06,951 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 18:54:06,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 18:54:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 18:54:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-09 18:54:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 18:54:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-09 18:54:06,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-09 18:54:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:06,959 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-09 18:54:06,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:54:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-09 18:54:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:54:06,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:06,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:54:07,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:54:07,162 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:07,164 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-09 18:54:07,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:07,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338643066] [2020-12-09 18:54:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:07,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 18:54:07,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:07,298 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 18:54:07,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:07,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338643066] [2020-12-09 18:54:07,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:07,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:54:07,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182917714] [2020-12-09 18:54:07,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:54:07,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:07,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:54:07,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:54:07,300 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-09 18:54:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:07,338 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2020-12-09 18:54:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:54:07,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 18:54:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:07,339 INFO L225 Difference]: With dead ends: 50 [2020-12-09 18:54:07,339 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 18:54:07,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 18:54:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 18:54:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 18:54:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 18:54:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-12-09 18:54:07,343 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2020-12-09 18:54:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:07,343 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-12-09 18:54:07,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:54:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-12-09 18:54:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 18:54:07,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:07,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:54:07,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:54:07,546 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-12-09 18:54:07,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:07,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98419301] [2020-12-09 18:54:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:07,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:54:07,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:07,741 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 18:54:07,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:07,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98419301] [2020-12-09 18:54:07,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:07,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:54:07,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671839014] [2020-12-09 18:54:07,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:54:07,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:07,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:54:07,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:54:07,744 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2020-12-09 18:54:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:07,777 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-12-09 18:54:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:54:07,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 18:54:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:07,778 INFO L225 Difference]: With dead ends: 48 [2020-12-09 18:54:07,778 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 18:54:07,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 18:54:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 18:54:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2020-12-09 18:54:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:54:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-12-09 18:54:07,782 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-12-09 18:54:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:07,783 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-12-09 18:54:07,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:54:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-12-09 18:54:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 18:54:07,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:07,783 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 18:54:07,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 18:54:07,985 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:07,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:07,987 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2020-12-09 18:54:07,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:07,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738406097] [2020-12-09 18:54:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:08,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 18:54:08,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:08,156 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 18:54:08,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:08,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738406097] [2020-12-09 18:54:08,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:08,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:54:08,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032365727] [2020-12-09 18:54:08,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:54:08,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:08,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:54:08,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:54:08,158 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2020-12-09 18:54:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:08,193 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-12-09 18:54:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:54:08,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-09 18:54:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:08,195 INFO L225 Difference]: With dead ends: 39 [2020-12-09 18:54:08,195 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 18:54:08,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 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 18:54:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 18:54:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 18:54:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 18:54:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 18:54:08,198 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-12-09 18:54:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:08,198 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 18:54:08,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:54:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 18:54:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 18:54:08,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:08,199 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 18:54:08,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 18:54:08,401 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:08,402 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-12-09 18:54:08,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:08,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59825666] [2020-12-09 18:54:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:08,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 18:54:08,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:08,496 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 18:54:08,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:08,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59825666] [2020-12-09 18:54:08,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:08,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:54:08,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817383837] [2020-12-09 18:54:08,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:54:08,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:08,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:54:08,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:54:08,498 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2020-12-09 18:54:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:08,503 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-12-09 18:54:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:54:08,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 18:54:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:08,505 INFO L225 Difference]: With dead ends: 33 [2020-12-09 18:54:08,505 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 18:54:08,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:54:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 18:54:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 18:54:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 18:54:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-09 18:54:08,509 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2020-12-09 18:54:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:08,509 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-09 18:54:08,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:54:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-09 18:54:08,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 18:54:08,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:08,510 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 18:54:08,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 18:54:08,712 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:08,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:08,713 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-12-09 18:54:08,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:08,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298363501] [2020-12-09 18:54:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:08,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 18:54:08,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:08,861 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 18:54:08,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:08,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298363501] [2020-12-09 18:54:08,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:08,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 18:54:08,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193825551] [2020-12-09 18:54:08,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:54:08,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:08,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:54:08,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:54:08,863 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2020-12-09 18:54:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:08,910 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-12-09 18:54:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:54:08,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 18:54:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:08,911 INFO L225 Difference]: With dead ends: 26 [2020-12-09 18:54:08,911 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 18:54:08,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-09 18:54:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 18:54:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 18:54:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 18:54:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-12-09 18:54:08,914 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2020-12-09 18:54:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:08,914 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-12-09 18:54:08,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:54:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-12-09 18:54:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 18:54:08,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:54:08,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:54:09,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 18:54:09,117 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:54:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:54:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-12-09 18:54:09,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:54:09,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896967063] [2020-12-09 18:54:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/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 18:54:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:54:09,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 18:54:09,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:54:09,238 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:54:09,264 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 18:54:09,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:54:09,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896967063] [2020-12-09 18:54:09,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:54:09,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 18:54:09,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506872213] [2020-12-09 18:54:09,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 18:54:09,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:54:09,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 18:54:09,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-09 18:54:09,266 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 10 states. [2020-12-09 18:54:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:54:09,386 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 18:54:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 18:54:09,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-12-09 18:54:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:54:09,387 INFO L225 Difference]: With dead ends: 23 [2020-12-09 18:54:09,387 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:54:09,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-09 18:54:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:54:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:54:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:54:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:54:09,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-09 18:54:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:54:09,388 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:54:09,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 18:54:09,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:54:09,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:54:09,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 18:54:09,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:54:09,733 INFO L265 CegarLoopResult]: At program point L85(lines 67 86) the Hoare annotation is: true [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L258 CegarLoopResult]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point L38(lines 38 41) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L262 CegarLoopResult]: For program point L80-2(lines 80 83) no Hoare annotation was computed. [2020-12-09 18:54:09,734 INFO L258 CegarLoopResult]: At program point L64(lines 55 65) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L32(lines 32 41) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L258 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmax_float_~x .cse0) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)))) [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L258 CegarLoopResult]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2020-12-09 18:54:09,735 INFO L262 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2020-12-09 18:54:09,736 INFO L258 CegarLoopResult]: At program point L41(lines 21 42) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= ULTIMATE.start_fmax_float_~x .cse0) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)))) [2020-12-09 18:54:09,736 INFO L258 CegarLoopResult]: At program point L41-1(lines 21 42) the Hoare annotation is: (and (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-12-09 18:54:09,736 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:54:09,736 INFO L262 CegarLoopResult]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2020-12-09 18:54:09,736 INFO L258 CegarLoopResult]: At program point L58-2(lines 58 62) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-12-09 18:54:09,736 INFO L262 CegarLoopResult]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2020-12-09 18:54:09,736 INFO L262 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2020-12-09 18:54:09,736 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2020-12-09 18:54:09,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:54:09 BoogieIcfgContainer [2020-12-09 18:54:09,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:54:09,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:54:09,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:54:09,750 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:54:09,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:06" (3/4) ... [2020-12-09 18:54:09,753 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:54:09,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-09 18:54:09,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 18:54:09,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 18:54:09,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:54:09,777 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-12-09 18:54:09,777 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-12-09 18:54:09,778 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() [2020-12-09 18:54:09,778 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-12-09 18:54:09,778 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() [2020-12-09 18:54:09,796 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7fcca235-91a1-404a-b5a6-566508220961/bin/utaipan/witness.graphml [2020-12-09 18:54:09,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:54:09,797 INFO L168 Benchmark]: Toolchain (without parser) took 3998.22 ms. Allocated memory was 48.2 MB in the beginning and 75.5 MB in the end (delta: 27.3 MB). Free memory was 24.8 MB in the beginning and 28.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:09,797 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:54:09,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.01 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 24.9 MB in the end (delta: -228.4 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:09,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.82 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.9 MB in the beginning and 46.9 MB in the end (delta: -22.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:09,798 INFO L168 Benchmark]: Boogie Preprocessor took 24.14 ms. Allocated memory is still 62.9 MB. Free memory was 46.7 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:54:09,799 INFO L168 Benchmark]: RCFGBuilder took 337.25 ms. Allocated memory is still 62.9 MB. Free memory was 45.1 MB in the beginning and 38.9 MB in the end (delta: 6.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:09,799 INFO L168 Benchmark]: TraceAbstraction took 3361.56 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 32.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:09,799 INFO L168 Benchmark]: Witness Printer took 45.81 ms. Allocated memory is still 75.5 MB. Free memory was 32.8 MB in the beginning and 28.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:54:09,801 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 48.2 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 182.01 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 24.9 MB in the end (delta: -228.4 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.82 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.9 MB in the beginning and 46.9 MB in the end (delta: -22.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.14 ms. Allocated memory is still 62.9 MB. Free memory was 46.7 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 337.25 ms. Allocated memory is still 62.9 MB. Free memory was 45.1 MB in the beginning and 38.9 MB in the end (delta: 6.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3361.56 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 32.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 45.81 ms. Allocated memory is still 75.5 MB. Free memory was 32.8 MB in the beginning and 28.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == x && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 226 SDtfs, 141 SDslu, 293 SDs, 0 SdLazy, 124 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 167 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5340 SizeOfPredicates, 38 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 55 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 proved your program to be correct! Received shutdown request...