./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 32adbfac5f3e3ea232180afd045da0027ca6d993 ..................................................................................................................................................................................................................................................................................................................... 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_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 32adbfac5f3e3ea232180afd045da0027ca6d993 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:18,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:18,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:18,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:18,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:18,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:18,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:18,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:18,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:18,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:18,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:18,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:18,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:18,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:18,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:18,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:18,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:18,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:18,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:18,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:18,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:18,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:18,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:18,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:18,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:18,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:18,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:18,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:18,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:18,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:18,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:18,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:18,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:18,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:18,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:18,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:18,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:18,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:18,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:18,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:18,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:18,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:18,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:18,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:18,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:18,668 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:18,668 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:18,668 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:18,669 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:18,669 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:18,669 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:18,669 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:18,670 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:18,670 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:18,671 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:18,671 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:18,671 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:18,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:18,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:18,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:18,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:18,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:18,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:18,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:18,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:18,673 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:18,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:18,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:18,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:18,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:18,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:18,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:18,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:18,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:18,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:18,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:18,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:18,677 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:18,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:18,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:18,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:18,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:18,678 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_a89aaaea-1928-44e4-b706-b534a96bafbb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-11-22 13:05:18,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:19,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:19,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:19,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:19,011 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:19,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-22 13:05:19,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/051cd60da/27bc0a6d2ba149479a5f4ecd887eb057/FLAGf4277b7c4 [2020-11-22 13:05:19,614 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:19,617 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-22 13:05:19,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/051cd60da/27bc0a6d2ba149479a5f4ecd887eb057/FLAGf4277b7c4 [2020-11-22 13:05:19,961 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/051cd60da/27bc0a6d2ba149479a5f4ecd887eb057 [2020-11-22 13:05:19,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:19,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:19,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:19,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:19,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:19,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:19" (1/1) ... [2020-11-22 13:05:19,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293cd835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:19, skipping insertion in model container [2020-11-22 13:05:19,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:19" (1/1) ... [2020-11-22 13:05:19,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:20,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:20,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:20,237 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:20,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:20,275 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:20,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20 WrapperNode [2020-11-22 13:05:20,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:20,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:20,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:20,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:20,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:20,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:20,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:20,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:20,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... [2020-11-22 13:05:20,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:20,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:20,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:20,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:20,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:05:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:05:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:21,564 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:21,564 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-22 13:05:21,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:21 BoogieIcfgContainer [2020-11-22 13:05:21,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:21,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:21,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:21,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:21,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:19" (1/3) ... [2020-11-22 13:05:21,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d00dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:21, skipping insertion in model container [2020-11-22 13:05:21,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:20" (2/3) ... [2020-11-22 13:05:21,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d00dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:21, skipping insertion in model container [2020-11-22 13:05:21,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:21" (3/3) ... [2020-11-22 13:05:21,575 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-11-22 13:05:21,586 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:21,590 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:05:21,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:05:21,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:21,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:21,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:21,626 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:21,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:21,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:21,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:21,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:21,638 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-22 13:05:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:21,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:21,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:21,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:21,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1159694680, now seen corresponding path program 1 times [2020-11-22 13:05:21,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:21,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835289980] [2020-11-22 13:05:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:21,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835289980] [2020-11-22 13:05:21,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:21,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:21,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462397938] [2020-11-22 13:05:21,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:21,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:21,831 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-22 13:05:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:21,850 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2020-11-22 13:05:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:21,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 13:05:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:21,870 INFO L225 Difference]: With dead ends: 36 [2020-11-22 13:05:21,870 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:05:21,873 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 [2020-11-22 13:05:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:05:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:05:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:05:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-22 13:05:21,909 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-11-22 13:05:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:21,909 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-22 13:05:21,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-22 13:05:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:05:21,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:21,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:21,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:21,911 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:21,911 INFO L82 PathProgramCache]: Analyzing trace with hash -744203932, now seen corresponding path program 1 times [2020-11-22 13:05:21,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:21,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435718200] [2020-11-22 13:05:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:22,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:22,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:22,130 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:05:22,130 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:05:22,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:22,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:22 BoogieIcfgContainer [2020-11-22 13:05:22,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:22,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:22,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:22,172 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:22,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:21" (3/4) ... [2020-11-22 13:05:22,176 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:05:22,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:22,180 INFO L168 Benchmark]: Toolchain (without parser) took 2212.18 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 76.6 MB in the beginning and 71.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:22,181 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 113.2 MB. Free memory was 84.4 MB in the beginning and 84.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:22,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.37 ms. Allocated memory is still 113.2 MB. Free memory was 76.3 MB in the beginning and 86.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:22,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.47 ms. Allocated memory is still 113.2 MB. Free memory was 86.5 MB in the beginning and 84.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:22,185 INFO L168 Benchmark]: Boogie Preprocessor took 31.88 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 83.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:22,186 INFO L168 Benchmark]: RCFGBuilder took 1212.71 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 82.5 MB in the beginning and 102.3 MB in the end (delta: -19.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:22,186 INFO L168 Benchmark]: TraceAbstraction took 602.89 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 72.8 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:22,188 INFO L168 Benchmark]: Witness Printer took 4.45 ms. Allocated memory is still 146.8 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 967.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:22,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 113.2 MB. Free memory was 84.4 MB in the beginning and 84.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.37 ms. Allocated memory is still 113.2 MB. Free memory was 76.3 MB in the beginning and 86.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.47 ms. Allocated memory is still 113.2 MB. Free memory was 86.5 MB in the beginning and 84.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.88 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 83.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1212.71 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 82.5 MB in the beginning and 102.3 MB in the end (delta: -19.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 602.89 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 72.8 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.45 ms. Allocated memory is still 146.8 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 967.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L3] __assert_fail("0", "float_req_bl_1251.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 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=19occurred 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, 0.1s 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-a4ecdab [2020-11-22 13:05:24,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:24,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:24,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:24,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:24,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:24,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:24,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:24,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:24,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:24,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:24,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:24,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:24,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:24,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:24,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:24,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:24,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:24,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:24,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:24,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:24,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:24,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:24,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:24,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:24,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:24,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:24,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:24,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:24,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:24,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:24,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:24,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:24,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:24,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:24,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:24,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:24,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:24,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:24,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:24,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:24,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:05:24,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:24,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:24,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:24,716 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:24,717 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:24,717 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:24,717 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:24,717 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:24,718 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:24,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:24,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:24,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:24,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:24,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:24,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:24,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:24,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:24,720 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:05:24,721 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:05:24,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:24,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:24,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:24,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:24,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:24,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:05:24,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:24,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:24,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:24,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:24,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:24,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:24,729 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:05:24,729 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:05:24,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:24,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:24,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:24,731 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_a89aaaea-1928-44e4-b706-b534a96bafbb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-11-22 13:05:25,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:25,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:25,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:25,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:25,114 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:25,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-22 13:05:25,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/1fb043f37/e298ae3765aa4feda033a6bad8a52030/FLAGc1ae90352 [2020-11-22 13:05:25,609 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:25,609 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-22 13:05:25,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/1fb043f37/e298ae3765aa4feda033a6bad8a52030/FLAGc1ae90352 [2020-11-22 13:05:26,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/data/1fb043f37/e298ae3765aa4feda033a6bad8a52030 [2020-11-22 13:05:26,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:26,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:26,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:26,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:26,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:26,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701ce097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26, skipping insertion in model container [2020-11-22 13:05:26,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:26,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:26,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:26,200 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:26,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:26,254 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:26,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26 WrapperNode [2020-11-22 13:05:26,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:26,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:26,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:26,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:26,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:26,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:26,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:26,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:26,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... [2020-11-22 13:05:26,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:26,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:26,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:26,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:26,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:05:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:05:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:26,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 13:05:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:27,126 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:27,128 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-22 13:05:27,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:27 BoogieIcfgContainer [2020-11-22 13:05:27,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:27,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:27,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:27,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:27,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:26" (1/3) ... [2020-11-22 13:05:27,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467e4097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:27, skipping insertion in model container [2020-11-22 13:05:27,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:26" (2/3) ... [2020-11-22 13:05:27,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467e4097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:27, skipping insertion in model container [2020-11-22 13:05:27,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:27" (3/3) ... [2020-11-22 13:05:27,139 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-11-22 13:05:27,150 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:27,154 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:05:27,167 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:05:27,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:27,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:27,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:27,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:27,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:27,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:27,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:27,207 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:27,221 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-22 13:05:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:05:27,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:27,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:27,229 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-11-22 13:05:27,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:27,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040243246] [2020-11-22 13:05:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:27,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:05:27,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:27,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:27,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040243246] [2020-11-22 13:05:27,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:27,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:05:27,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569724132] [2020-11-22 13:05:27,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:27,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:27,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:27,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:27,442 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2020-11-22 13:05:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:27,466 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-22 13:05:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:27,468 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 13:05:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:27,477 INFO L225 Difference]: With dead ends: 84 [2020-11-22 13:05:27,478 INFO L226 Difference]: Without dead ends: 43 [2020-11-22 13:05:27,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-22 13:05:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-22 13:05:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-22 13:05:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-11-22 13:05:27,522 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-11-22 13:05:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:27,522 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-11-22 13:05:27,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-11-22 13:05:27,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:05:27,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:27,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:27,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:05:27,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:27,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-11-22 13:05:27,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:27,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932697836] [2020-11-22 13:05:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:27,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:27,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:27,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932697836] [2020-11-22 13:05:27,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:27,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:05:27,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15284769] [2020-11-22 13:05:27,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:27,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:27,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:27,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:27,890 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-11-22 13:05:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:27,961 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-11-22 13:05:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:27,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:05:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:27,967 INFO L225 Difference]: With dead ends: 82 [2020-11-22 13:05:27,967 INFO L226 Difference]: Without dead ends: 50 [2020-11-22 13:05:27,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-22 13:05:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-22 13:05:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-22 13:05:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-11-22 13:05:27,982 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-11-22 13:05:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:27,983 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-11-22 13:05:27,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-11-22 13:05:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:05:27,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:27,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:28,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:05:28,185 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-11-22 13:05:28,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:28,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614606127] [2020-11-22 13:05:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:28,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:28,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:28,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:28,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614606127] [2020-11-22 13:05:28,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:28,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:05:28,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095793235] [2020-11-22 13:05:28,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:05:28,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:05:28,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:28,355 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 6 states. [2020-11-22 13:05:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:28,514 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-11-22 13:05:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:05:28,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-22 13:05:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:28,517 INFO L225 Difference]: With dead ends: 96 [2020-11-22 13:05:28,517 INFO L226 Difference]: Without dead ends: 83 [2020-11-22 13:05:28,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-22 13:05:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-11-22 13:05:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-22 13:05:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-22 13:05:28,535 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-11-22 13:05:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:28,535 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-22 13:05:28,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:05:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-22 13:05:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:05:28,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:28,536 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] [2020-11-22 13:05:28,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:05:28,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:28,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-11-22 13:05:28,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:28,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872439479] [2020-11-22 13:05:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:28,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:05:28,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:28,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:28,931 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:28,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:29,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872439479] [2020-11-22 13:05:29,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:29,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-22 13:05:29,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746109671] [2020-11-22 13:05:29,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:29,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:29,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:29,061 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 10 states. [2020-11-22 13:05:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:29,664 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-11-22 13:05:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:05:29,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-22 13:05:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:29,667 INFO L225 Difference]: With dead ends: 149 [2020-11-22 13:05:29,667 INFO L226 Difference]: Without dead ends: 140 [2020-11-22 13:05:29,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:05:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-22 13:05:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-11-22 13:05:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-22 13:05:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-11-22 13:05:29,679 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-11-22 13:05:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:29,679 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-11-22 13:05:29,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-11-22 13:05:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:05:29,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:29,681 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] [2020-11-22 13:05:29,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:05:29,896 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-11-22 13:05:29,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:29,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855950097] [2020-11-22 13:05:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:30,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:05:30,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:30,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:30,052 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:30,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:30,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:30,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855950097] [2020-11-22 13:05:30,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:30,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-11-22 13:05:30,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25944426] [2020-11-22 13:05:30,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-22 13:05:30,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:30,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-22 13:05:30,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:05:30,460 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 15 states. [2020-11-22 13:05:31,454 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-22 13:05:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:31,634 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-11-22 13:05:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-22 13:05:31,637 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-11-22 13:05:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:31,639 INFO L225 Difference]: With dead ends: 180 [2020-11-22 13:05:31,639 INFO L226 Difference]: Without dead ends: 178 [2020-11-22 13:05:31,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-11-22 13:05:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-22 13:05:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-11-22 13:05:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-22 13:05:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-11-22 13:05:31,653 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-11-22 13:05:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:31,654 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-11-22 13:05:31,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-22 13:05:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-11-22 13:05:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 13:05:31,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:31,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:31,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:05:31,873 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:31,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:31,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-11-22 13:05:31,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:31,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659366487] [2020-11-22 13:05:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:31,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:05:31,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:31,978 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:32,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:32,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:32,028 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 13:05:32,028 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:32,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659366487] [2020-11-22 13:05:32,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:32,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-22 13:05:32,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747759653] [2020-11-22 13:05:32,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:05:32,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:32,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:05:32,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:05:32,076 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 9 states. [2020-11-22 13:05:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:32,563 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-11-22 13:05:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:05:32,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-22 13:05:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:32,565 INFO L225 Difference]: With dead ends: 166 [2020-11-22 13:05:32,565 INFO L226 Difference]: Without dead ends: 131 [2020-11-22 13:05:32,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:05:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-22 13:05:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-11-22 13:05:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-22 13:05:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-11-22 13:05:32,577 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-11-22 13:05:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:32,577 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-11-22 13:05:32,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:05:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-11-22 13:05:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 13:05:32,578 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:32,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:32,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:05:32,801 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:32,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:32,802 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-11-22 13:05:32,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:32,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592674648] [2020-11-22 13:05:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:32,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:32,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:32,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:32,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592674648] [2020-11-22 13:05:32,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:32,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:05:32,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965104550] [2020-11-22 13:05:32,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:05:32,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:32,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:05:32,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:32,924 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 6 states. [2020-11-22 13:05:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:33,053 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-11-22 13:05:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:05:33,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-22 13:05:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:33,056 INFO L225 Difference]: With dead ends: 157 [2020-11-22 13:05:33,056 INFO L226 Difference]: Without dead ends: 141 [2020-11-22 13:05:33,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-22 13:05:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-11-22 13:05:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-22 13:05:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-22 13:05:33,077 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-22 13:05:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:33,078 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-22 13:05:33,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:05:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-22 13:05:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 13:05:33,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:33,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:33,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:05:33,306 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:33,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-11-22 13:05:33,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:33,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311753517] [2020-11-22 13:05:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/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 [2020-11-22 13:05:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:33,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:33,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:33,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:33,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311753517] [2020-11-22 13:05:33,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:33,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:05:33,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036651178] [2020-11-22 13:05:33,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:33,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:33,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:33,380 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-11-22 13:05:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:33,434 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-11-22 13:05:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:33,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-22 13:05:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:33,436 INFO L225 Difference]: With dead ends: 96 [2020-11-22 13:05:33,436 INFO L226 Difference]: Without dead ends: 94 [2020-11-22 13:05:33,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-22 13:05:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-11-22 13:05:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-22 13:05:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-22 13:05:33,445 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-22 13:05:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:33,445 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-22 13:05:33,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-22 13:05:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:05:33,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:33,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:33,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:05:33,648 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:33,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1743883267, now seen corresponding path program 1 times [2020-11-22 13:05:33,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:33,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008495209] [2020-11-22 13:05:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:33,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:05:33,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:33,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:33,825 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:33,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:33,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008495209] [2020-11-22 13:05:33,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:33,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-22 13:05:33,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263518996] [2020-11-22 13:05:33,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:33,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:33,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:33,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:33,932 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 10 states. [2020-11-22 13:05:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:34,332 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-11-22 13:05:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:05:34,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-22 13:05:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:34,333 INFO L225 Difference]: With dead ends: 131 [2020-11-22 13:05:34,333 INFO L226 Difference]: Without dead ends: 118 [2020-11-22 13:05:34,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:05:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-22 13:05:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-11-22 13:05:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-22 13:05:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-11-22 13:05:34,342 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-11-22 13:05:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:34,342 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-11-22 13:05:34,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-11-22 13:05:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:05:34,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:34,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:34,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 13:05:34,560 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:34,560 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-11-22 13:05:34,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:34,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951097350] [2020-11-22 13:05:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:34,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-22 13:05:34,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:34,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:34,681 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:34,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:34,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951097350] [2020-11-22 13:05:34,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:34,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2020-11-22 13:05:34,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270906124] [2020-11-22 13:05:34,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 13:05:34,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:34,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 13:05:34,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:05:34,781 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 11 states. [2020-11-22 13:05:35,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,135 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-11-22 13:05:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:05:35,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-11-22 13:05:35,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,136 INFO L225 Difference]: With dead ends: 114 [2020-11-22 13:05:35,136 INFO L226 Difference]: Without dead ends: 78 [2020-11-22 13:05:35,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-11-22 13:05:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-22 13:05:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-11-22 13:05:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-22 13:05:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-11-22 13:05:35,143 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-11-22 13:05:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:35,143 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-11-22 13:05:35,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 13:05:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-11-22 13:05:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:05:35,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:35,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-22 13:05:35,361 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:35,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-11-22 13:05:35,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:35,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280477243] [2020-11-22 13:05:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:05:35,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:35,482 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:35,514 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:35,539 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 13:05:35,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280477243] [2020-11-22 13:05:35,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:35,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-22 13:05:35,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88333863] [2020-11-22 13:05:35,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:05:35,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:35,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:05:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:05:35,581 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 9 states. [2020-11-22 13:05:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,882 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-11-22 13:05:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:05:35,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-22 13:05:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,892 INFO L225 Difference]: With dead ends: 84 [2020-11-22 13:05:35,892 INFO L226 Difference]: Without dead ends: 74 [2020-11-22 13:05:35,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-11-22 13:05:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-22 13:05:35,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-22 13:05:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 13:05:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-11-22 13:05:35,898 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-11-22 13:05:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:35,898 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-11-22 13:05:35,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:05:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-11-22 13:05:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 13:05:35,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:36,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-22 13:05:36,100 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:36,101 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-11-22 13:05:36,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:36,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488850249] [2020-11-22 13:05:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:36,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:05:36,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:36,213 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:36,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:36,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488850249] [2020-11-22 13:05:36,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:36,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:05:36,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125541471] [2020-11-22 13:05:36,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:36,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:36,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:36,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:36,629 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 10 states. [2020-11-22 13:05:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:37,059 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-11-22 13:05:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:05:37,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-11-22 13:05:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:37,060 INFO L225 Difference]: With dead ends: 82 [2020-11-22 13:05:37,060 INFO L226 Difference]: Without dead ends: 74 [2020-11-22 13:05:37,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-22 13:05:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-22 13:05:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-22 13:05:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 13:05:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-11-22 13:05:37,066 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-11-22 13:05:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:37,066 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-11-22 13:05:37,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-11-22 13:05:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 13:05:37,067 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:37,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:37,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-22 13:05:37,281 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:37,281 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-11-22 13:05:37,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:37,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743833609] [2020-11-22 13:05:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:37,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:05:37,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:37,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:37,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:37,735 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:37,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743833609] [2020-11-22 13:05:37,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:37,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-11-22 13:05:37,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403207728] [2020-11-22 13:05:37,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-22 13:05:37,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-22 13:05:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:05:37,874 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 16 states. [2020-11-22 13:05:38,875 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-22 13:05:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:39,684 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-11-22 13:05:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-22 13:05:39,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-11-22 13:05:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:39,685 INFO L225 Difference]: With dead ends: 154 [2020-11-22 13:05:39,685 INFO L226 Difference]: Without dead ends: 134 [2020-11-22 13:05:39,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-11-22 13:05:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-22 13:05:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-11-22 13:05:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-22 13:05:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-11-22 13:05:39,695 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2020-11-22 13:05:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:39,695 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-11-22 13:05:39,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-22 13:05:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-11-22 13:05:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-22 13:05:39,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:39,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:39,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-22 13:05:39,910 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-11-22 13:05:39,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:39,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067887706] [2020-11-22 13:05:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:40,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-22 13:05:40,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:40,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:40,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:40,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:40,390 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-11-22 13:05:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:40,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067887706] [2020-11-22 13:05:40,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:40,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2020-11-22 13:05:40,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800605652] [2020-11-22 13:05:40,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-22 13:05:40,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:40,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-22 13:05:40,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:05:40,694 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 15 states. [2020-11-22 13:05:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:42,844 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-11-22 13:05:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-22 13:05:42,844 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-11-22 13:05:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:42,845 INFO L225 Difference]: With dead ends: 195 [2020-11-22 13:05:42,846 INFO L226 Difference]: Without dead ends: 158 [2020-11-22 13:05:42,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2020-11-22 13:05:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-22 13:05:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-11-22 13:05:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-22 13:05:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-11-22 13:05:42,853 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-11-22 13:05:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:42,853 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-11-22 13:05:42,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-22 13:05:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-11-22 13:05:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 13:05:42,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:42,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:43,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-22 13:05:43,061 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:43,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1423958792, now seen corresponding path program 1 times [2020-11-22 13:05:43,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:43,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119872169] [2020-11-22 13:05:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:43,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-22 13:05:43,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:43,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:43,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:43,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119872169] [2020-11-22 13:05:43,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:43,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2020-11-22 13:05:43,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343958998] [2020-11-22 13:05:43,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 13:05:43,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 13:05:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:05:43,502 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 12 states. [2020-11-22 13:05:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:44,614 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-11-22 13:05:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-22 13:05:44,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-11-22 13:05:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:44,616 INFO L225 Difference]: With dead ends: 125 [2020-11-22 13:05:44,616 INFO L226 Difference]: Without dead ends: 101 [2020-11-22 13:05:44,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-11-22 13:05:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-22 13:05:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2020-11-22 13:05:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-22 13:05:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-11-22 13:05:44,622 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-11-22 13:05:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:44,622 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-11-22 13:05:44,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 13:05:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-11-22 13:05:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-22 13:05:44,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:44,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:44,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-22 13:05:44,834 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash 489956430, now seen corresponding path program 1 times [2020-11-22 13:05:44,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:44,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651779612] [2020-11-22 13:05:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:44,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:05:44,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:44,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:45,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:45,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:45,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651779612] [2020-11-22 13:05:45,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:45,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:05:45,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295857646] [2020-11-22 13:05:45,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:45,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:45,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:45,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:45,289 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-11-22 13:05:45,699 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-22 13:05:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:45,998 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-22 13:05:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:05:45,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-22 13:05:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:45,999 INFO L225 Difference]: With dead ends: 52 [2020-11-22 13:05:45,999 INFO L226 Difference]: Without dead ends: 41 [2020-11-22 13:05:46,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:05:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-22 13:05:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-22 13:05:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-22 13:05:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-11-22 13:05:46,004 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-11-22 13:05:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:46,005 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-11-22 13:05:46,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-11-22 13:05:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-22 13:05:46,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:46,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:46,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-22 13:05:46,209 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:46,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1191021008, now seen corresponding path program 1 times [2020-11-22 13:05:46,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:46,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566267036] [2020-11-22 13:05:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:46,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-22 13:05:46,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:46,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:46,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:46,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:46,440 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-11-22 13:05:46,440 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:46,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566267036] [2020-11-22 13:05:46,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:46,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-11-22 13:05:46,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873400365] [2020-11-22 13:05:46,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-22 13:05:46,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:46,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-22 13:05:46,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-22 13:05:46,617 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 14 states. [2020-11-22 13:05:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:47,444 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-11-22 13:05:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:05:47,445 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-11-22 13:05:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:47,445 INFO L225 Difference]: With dead ends: 55 [2020-11-22 13:05:47,445 INFO L226 Difference]: Without dead ends: 41 [2020-11-22 13:05:47,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-11-22 13:05:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-22 13:05:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-22 13:05:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-22 13:05:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-22 13:05:47,449 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-11-22 13:05:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:47,449 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-22 13:05:47,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-22 13:05:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-22 13:05:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-22 13:05:47,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:47,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:47,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-22 13:05:47,653 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:47,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:47,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1654102483, now seen corresponding path program 1 times [2020-11-22 13:05:47,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:47,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382810539] [2020-11-22 13:05:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:47,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:05:47,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:47,754 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:47,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:47,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:47,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382810539] [2020-11-22 13:05:47,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:47,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-22 13:05:47,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957703893] [2020-11-22 13:05:47,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 13:05:47,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:47,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 13:05:47,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:05:47,996 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-11-22 13:05:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,556 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-11-22 13:05:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:05:48,557 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-11-22 13:05:48,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,557 INFO L225 Difference]: With dead ends: 79 [2020-11-22 13:05:48,557 INFO L226 Difference]: Without dead ends: 61 [2020-11-22 13:05:48,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-11-22 13:05:48,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-22 13:05:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-11-22 13:05:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-22 13:05:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-22 13:05:48,563 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2020-11-22 13:05:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,563 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-22 13:05:48,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 13:05:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-22 13:05:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-22 13:05:48,563 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:48,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:48,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-11-22 13:05:48,764 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:48,764 INFO L82 PathProgramCache]: Analyzing trace with hash 798574185, now seen corresponding path program 1 times [2020-11-22 13:05:48,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:48,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135273318] [2020-11-22 13:05:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:48,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:48,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:48,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135273318] [2020-11-22 13:05:48,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:48,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:05:48,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132150075] [2020-11-22 13:05:48,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:48,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:48,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:48,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:48,862 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-11-22 13:05:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:48,886 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-22 13:05:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:48,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-22 13:05:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:48,886 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:05:48,886 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:48,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:48,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-22 13:05:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:48,887 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:48,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:48,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:49,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-11-22 13:05:49,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:49,336 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 119 [2020-11-22 13:05:49,460 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2020-11-22 13:05:49,581 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 110 [2020-11-22 13:05:50,643 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 39 [2020-11-22 13:05:51,412 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2020-11-22 13:05:51,736 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-11-22 13:05:52,309 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 33 [2020-11-22 13:05:53,092 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-11-22 13:05:53,899 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-11-22 13:05:54,524 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 38 [2020-11-22 13:05:55,725 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2020-11-22 13:05:55,934 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L36(lines 36 42) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L69-2(line 69) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2020-11-22 13:05:55,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L53-2(line 53) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L270 CegarLoopResult]: At program point L53-3(lines 45 54) the Hoare annotation is: (let ((.cse1 (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_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_fmax_float_~y .cse1) .cse2) (and (not (fp.eq .cse1 .cse1)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L277 CegarLoopResult]: At program point L87(lines 59 88) the Hoare annotation is: true [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-11-22 13:05:55,987 INFO L274 CegarLoopResult]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2020-11-22 13:05:55,988 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 13:05:55,988 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2020-11-22 13:05:55,988 INFO L270 CegarLoopResult]: At program point L57-1(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2020-11-22 13:05:55,988 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:05:55,988 INFO L270 CegarLoopResult]: At program point L57-2(line 57) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse1 (not |ULTIMATE.start_main_#t~short16|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2))) [2020-11-22 13:05:55,988 INFO L270 CegarLoopResult]: At program point L57-3(line 57) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) (not |ULTIMATE.start_main_#t~short16|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2020-11-22 13:05:55,988 INFO L270 CegarLoopResult]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (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))) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)) (and (not (fp.eq .cse3 .cse3)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_fmax_float_~y .cse3) .cse2))) [2020-11-22 13:05:55,989 INFO L270 CegarLoopResult]: At program point L57-5(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) |ULTIMATE.start_main_#t~short24| .cse1 (= ULTIMATE.start_fmax_float_~y (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))) .cse2) (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-11-22 13:05:55,989 INFO L270 CegarLoopResult]: At program point L57-6(line 57) the Hoare annotation is: (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (let ((.cse0 (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)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) [2020-11-22 13:05:55,989 INFO L270 CegarLoopResult]: At program point L57-7(line 57) the Hoare annotation is: (and (not (let ((.cse0 (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)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) [2020-11-22 13:05:55,989 INFO L274 CegarLoopResult]: For program point L33(lines 33 42) no Hoare annotation was computed. [2020-11-22 13:05:55,989 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:55,989 INFO L274 CegarLoopResult]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2020-11-22 13:05:55,989 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2020-11-22 13:05:55,990 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not .cse1)) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse0))) [2020-11-22 13:05:55,990 INFO L274 CegarLoopResult]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2020-11-22 13:05:55,990 INFO L274 CegarLoopResult]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2020-11-22 13:05:55,990 INFO L270 CegarLoopResult]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))))) [2020-11-22 13:05:55,990 INFO L274 CegarLoopResult]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2020-11-22 13:05:55,990 INFO L274 CegarLoopResult]: For program point L50(lines 50 52) no Hoare annotation was computed. [2020-11-22 13:05:55,990 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-11-22 13:05:55,990 INFO L270 CegarLoopResult]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (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)))) (and (= ULTIMATE.start_fmax_float_~x .cse1) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) (fp.eq .cse1 .cse1) .cse0)))) [2020-11-22 13:05:55,990 INFO L270 CegarLoopResult]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (.cse2 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_fmax_float_~y (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))))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not .cse0) (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 .cse2 .cse3))) [2020-11-22 13:05:55,991 INFO L274 CegarLoopResult]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2020-11-22 13:05:56,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:56 BoogieIcfgContainer [2020-11-22 13:05:56,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:56,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:56,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:56,017 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:56,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:27" (3/4) ... [2020-11-22 13:05:56,021 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:56,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-11-22 13:05:56,047 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:05:56,048 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:05:56,048 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:56,069 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2020-11-22 13:05:56,070 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2020-11-22 13:05:56,070 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) [2020-11-22 13:05:56,071 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) [2020-11-22 13:05:56,071 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) [2020-11-22 13:05:56,071 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) [2020-11-22 13:05:56,072 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-11-22 13:05:56,072 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) [2020-11-22 13:05:56,072 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) [2020-11-22 13:05:56,072 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-11-22 13:05:56,073 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-11-22 13:05:56,073 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) [2020-11-22 13:05:56,074 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y [2020-11-22 13:05:56,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a89aaaea-1928-44e4-b706-b534a96bafbb/bin/utaipan/witness.graphml [2020-11-22 13:05:56,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:56,109 INFO L168 Benchmark]: Toolchain (without parser) took 30104.19 ms. Allocated memory was 67.1 MB in the beginning and 142.6 MB in the end (delta: 75.5 MB). Free memory was 49.3 MB in the beginning and 54.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:56,110 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 48.8 MB in the end (delta: 54.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:56,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.34 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 49.4 MB in the end (delta: -239.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:56,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.57 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 47.4 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:56,111 INFO L168 Benchmark]: Boogie Preprocessor took 76.66 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 45.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:56,111 INFO L168 Benchmark]: RCFGBuilder took 713.97 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 43.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:56,112 INFO L168 Benchmark]: TraceAbstraction took 28884.44 ms. Allocated memory was 67.1 MB in the beginning and 142.6 MB in the end (delta: 75.5 MB). Free memory was 43.0 MB in the beginning and 59.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 77.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:56,112 INFO L168 Benchmark]: Witness Printer took 90.88 ms. Allocated memory is still 142.6 MB. Free memory was 59.5 MB in the beginning and 54.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:56,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 48.8 MB in the end (delta: 54.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.34 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 49.4 MB in the end (delta: -239.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.57 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 47.4 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.66 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 45.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 713.97 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 43.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28884.44 ms. Allocated memory was 67.1 MB in the beginning and 142.6 MB in the end (delta: 75.5 MB). Free memory was 43.0 MB in the beginning and 59.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 77.2 MB. Max. memory is 16.1 GB. * Witness Printer took 90.88 ms. Allocated memory is still 142.6 MB. Free memory was 59.5 MB in the beginning and 54.2 MB in the end (delta: 5.2 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.8s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2441 SDslu, 4709 SDs, 0 SdLazy, 1986 SolverSat, 266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 768 SyntacticMatches, 12 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 616 HoareAnnotationTreeSize, 14 FomulaSimplifications, 626146 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 14 FomulaSimplificationsInter, 38333 FormulaSimplificationTreeSizeReductionInter, 6.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 33 QuantifiedInterpolants, 95765 SizeOfPredicates, 147 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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...