./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8 --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 43afe140f1d8923ae3cc82938867c285a58a3757 ....................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8 --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 43afe140f1d8923ae3cc82938867c285a58a3757 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:10:02,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:10:02,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:10:02,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:10:02,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:10:02,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:10:02,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:10:02,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:10:02,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:10:02,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:10:02,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:10:02,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:10:02,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:10:02,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:10:02,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:10:02,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:10:02,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:10:02,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:10:02,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:10:02,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:10:02,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:10:02,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:10:02,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:10:02,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:10:02,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:10:02,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:10:02,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:10:02,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:10:02,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:10:02,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:10:02,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:10:02,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:10:02,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:10:02,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:10:02,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:10:02,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:10:02,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:10:02,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:10:02,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:10:02,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:10:02,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:10:02,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:10:02,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:10:02,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:10:02,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:10:02,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:10:02,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:10:02,695 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:10:02,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:10:02,696 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:10:02,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:10:02,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:10:02,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:10:02,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:10:02,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:10:02,707 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:10:02,707 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:10:02,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:10:02,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:10:02,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:10:02,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:10:02,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:10:02,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:10:02,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:10:02,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:10:02,711 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:10:02,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:10:02,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:10:02,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:10:02,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:10:02,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:10:02,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:10:02,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:10:02,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:10:02,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:10:02,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:10:02,717 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:10:02,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:10:02,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:10:02,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:10:02,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:10:02,719 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_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43afe140f1d8923ae3cc82938867c285a58a3757 [2021-10-13 08:10:03,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:10:03,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:10:03,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:10:03,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:10:03,071 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:10:03,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-13 08:10:03,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/635254a54/d3b85df67d77450f86aee1c4b9452790/FLAGdefdc33ac [2021-10-13 08:10:03,786 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:10:03,787 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-13 08:10:03,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/635254a54/d3b85df67d77450f86aee1c4b9452790/FLAGdefdc33ac [2021-10-13 08:10:04,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/635254a54/d3b85df67d77450f86aee1c4b9452790 [2021-10-13 08:10:04,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:10:04,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:10:04,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:10:04,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:10:04,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:10:04,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:04" (1/1) ... [2021-10-13 08:10:04,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad137eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:04, skipping insertion in model container [2021-10-13 08:10:04,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:04" (1/1) ... [2021-10-13 08:10:04,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:10:04,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:10:04,895 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1694) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1408) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2349) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:712) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2349) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:713) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:712) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:174) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1415) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1359) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1052) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3218) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2299) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:580) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:10:04,910 INFO L168 Benchmark]: Toolchain (without parser) took 865.06 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 81.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:04,911 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:10:04,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 861.92 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 81.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:04,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 861.92 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 81.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:10:07,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:10:07,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:10:07,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:10:07,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:10:07,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:10:07,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:10:07,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:10:07,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:10:07,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:10:07,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:10:07,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:10:07,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:10:07,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:10:07,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:10:07,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:10:07,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:10:07,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:10:07,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:10:07,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:10:07,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:10:07,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:10:07,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:10:07,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:10:07,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:10:07,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:10:07,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:10:07,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:10:07,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:10:07,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:10:07,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:10:07,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:10:07,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:10:07,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:10:07,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:10:07,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:10:07,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:10:07,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:10:07,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:10:07,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:10:07,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:10:07,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:10:07,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:10:07,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:10:07,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:10:07,800 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:10:07,801 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:10:07,801 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:10:07,801 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:10:07,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:10:07,807 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:10:07,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:10:07,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:10:07,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:10:07,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:10:07,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:10:07,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:10:07,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:10:07,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:10:07,812 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:10:07,812 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:10:07,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:10:07,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:10:07,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:10:07,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:10:07,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:10:07,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:10:07,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:10:07,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:10:07,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:10:07,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:10:07,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:10:07,815 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:10:07,815 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:07,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:10:07,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:10:07,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:10:07,817 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43afe140f1d8923ae3cc82938867c285a58a3757 [2021-10-13 08:10:08,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:10:08,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:10:08,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:10:08,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:10:08,309 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:10:08,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-13 08:10:08,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/ebbf48f07/5f7ff1bf048949aba359c5d315a7433c/FLAG6b690be9b [2021-10-13 08:10:09,186 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:10:09,186 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-10-13 08:10:09,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/ebbf48f07/5f7ff1bf048949aba359c5d315a7433c/FLAG6b690be9b [2021-10-13 08:10:09,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/data/ebbf48f07/5f7ff1bf048949aba359c5d315a7433c [2021-10-13 08:10:09,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:10:09,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:10:09,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:10:09,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:10:09,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:10:09,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:09" (1/1) ... [2021-10-13 08:10:09,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473b8c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:09, skipping insertion in model container [2021-10-13 08:10:09,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:09" (1/1) ... [2021-10-13 08:10:09,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:10:09,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:10:10,180 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2021-10-13 08:10:10,194 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2021-10-13 08:10:10,195 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2021-10-13 08:10:10,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:10:10,212 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:10:10,251 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2021-10-13 08:10:10,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2021-10-13 08:10:10,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2021-10-13 08:10:10,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:10:10,419 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:10:10,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10 WrapperNode [2021-10-13 08:10:10,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:10:10,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:10:10,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:10:10,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:10:10,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:10:10,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:10:10,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:10:10,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:10:10,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:10:10,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:10:10,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:10:10,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:10:10,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (1/1) ... [2021-10-13 08:10:10,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:10:10,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:10,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:10:10,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:10:10,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:10:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:10:10,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:10:10,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:10:14,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:10:14,931 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 08:10:14,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:14 BoogieIcfgContainer [2021-10-13 08:10:14,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:10:14,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:10:14,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:10:14,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:10:14,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:10:09" (1/3) ... [2021-10-13 08:10:14,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c6ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:10:14, skipping insertion in model container [2021-10-13 08:10:14,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:10" (2/3) ... [2021-10-13 08:10:14,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c6ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:10:14, skipping insertion in model container [2021-10-13 08:10:14,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:14" (3/3) ... [2021-10-13 08:10:14,943 INFO L111 eAbstractionObserver]: Analyzing ICFG float-div1.i [2021-10-13 08:10:14,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:10:14,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 08:10:15,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:10:15,012 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:10:15,012 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 08:10:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:10:15,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:15,040 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:10:15,041 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:10:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-13 08:10:15,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:15,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317046914] [2021-10-13 08:10:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:15,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:15,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:15,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:10:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:15,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:10:15,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:15,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:15,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:15,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317046914] [2021-10-13 08:10:15,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317046914] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:10:15,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:10:15,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:10:15,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566694925] [2021-10-13 08:10:15,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:10:15,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:10:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:10:15,741 INFO L87 Difference]: Start difference. First operand has 20 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:15,759 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-10-13 08:10:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:10:15,760 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:10:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:15,770 INFO L225 Difference]: With dead ends: 37 [2021-10-13 08:10:15,771 INFO L226 Difference]: Without dead ends: 16 [2021-10-13 08:10:15,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:10:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-13 08:10:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-13 08:10:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-10-13 08:10:15,810 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 6 [2021-10-13 08:10:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:15,811 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-10-13 08:10:15,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-10-13 08:10:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:10:15,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:15,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:10:15,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:16,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:10:16,027 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:10:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-13 08:10:16,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:16,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789481577] [2021-10-13 08:10:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:16,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:16,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:16,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:16,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:10:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:16,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:10:16,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:32,357 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (= c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))))) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 08:10:47,437 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) is different from false [2021-10-13 08:10:49,494 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) is different from true [2021-10-13 08:10:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:49,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:55,829 WARN L838 $PredicateComparison]: unable to prove that (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) is different from false [2021-10-13 08:10:57,923 WARN L860 $PredicateComparison]: unable to prove that (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) is different from true [2021-10-13 08:11:10,407 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-13 08:11:52,415 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) is different from false [2021-10-13 08:11:54,494 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) is different from true [2021-10-13 08:11:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:54,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:54,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789481577] [2021-10-13 08:11:54,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789481577] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:54,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:54,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-13 08:11:54,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789402579] [2021-10-13 08:11:54,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 08:11:54,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 08:11:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=8, NotChecked=60, Total=110 [2021-10-13 08:11:54,500 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:56,591 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 08:11:58,682 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 08:12:00,774 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState))) (or (and (not .cse0) .cse1) (and .cse1 (fp.isInfinite c_ULTIMATE.start_inductiveStepHunt_~startState)) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)))) (or .cse1 (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-13 08:12:02,868 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState))) (or (and (not .cse0) .cse1) (and .cse1 (fp.isInfinite c_ULTIMATE.start_inductiveStepHunt_~startState)) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)))) (or .cse1 (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 08:12:04,954 WARN L838 $PredicateComparison]: unable to prove that (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)) is different from false [2021-10-13 08:12:07,050 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)) is different from true [2021-10-13 08:12:09,160 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (= c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))))) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.gt c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-13 08:12:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:10,457 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-13 08:12:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:12:10,458 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:12:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:10,459 INFO L225 Difference]: With dead ends: 16 [2021-10-13 08:12:10,459 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 08:12:10,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33537.6ms TimeCoverageRelationStatistics Valid=29, Invalid=22, Unknown=15, NotChecked=144, Total=210 [2021-10-13 08:12:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 08:12:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 08:12:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-13 08:12:10,464 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 6 [2021-10-13 08:12:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:10,464 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-13 08:12:10,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-13 08:12:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:12:10,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:10,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:10,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:10,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:10,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:10,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:10,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1929124086, now seen corresponding path program 1 times [2021-10-13 08:12:10,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:10,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014515261] [2021-10-13 08:12:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:10,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:10,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:10,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:10,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:12:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:11,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:12:11,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:11,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:11,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:11,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014515261] [2021-10-13 08:12:11,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014515261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:11,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:11,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 08:12:11,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413002535] [2021-10-13 08:12:11,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:12:11,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:11,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:12:11,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:11,565 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:15,205 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-13 08:12:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:12:15,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:12:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:15,207 INFO L225 Difference]: With dead ends: 14 [2021-10-13 08:12:15,207 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 08:12:15,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:15,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 08:12:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 08:12:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-13 08:12:15,211 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-10-13 08:12:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:15,211 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-13 08:12:15,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-13 08:12:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:12:15,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:15,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:15,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:15,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:15,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:15,422 INFO L82 PathProgramCache]: Analyzing trace with hash 326699576, now seen corresponding path program 1 times [2021-10-13 08:12:15,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:15,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363306378] [2021-10-13 08:12:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:15,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:15,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:15,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:15,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:12:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:16,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:12:16,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:27,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:05,377 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-13 08:13:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:06,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:13:06,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363306378] [2021-10-13 08:13:06,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363306378] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:06,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:06,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 08:13:06,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666965367] [2021-10-13 08:13:06,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 08:13:06,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:13:06,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 08:13:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2021-10-13 08:13:06,220 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:25,224 WARN L207 SmtUtils]: Spent 6.31 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-10-13 08:13:25,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:25,480 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-13 08:13:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 08:13:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:25,520 INFO L225 Difference]: With dead ends: 12 [2021-10-13 08:13:25,520 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:13:25,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 43809.4ms TimeCoverageRelationStatistics Valid=40, Invalid=68, Unknown=2, NotChecked=0, Total=110 [2021-10-13 08:13:25,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:13:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:13:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:13:25,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-13 08:13:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:25,522 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:13:25,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:13:25,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:13:25,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:13:25,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:13:25,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:13:25,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:13:25,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:13:25,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:13:25,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:13:25,787 INFO L857 garLoopResultBuilder]: For program point L2-1(lines 2 4) no Hoare annotation was computed. [2021-10-13 08:13:25,787 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:13:25,787 INFO L857 garLoopResultBuilder]: For program point L384(line 384) no Hoare annotation was computed. [2021-10-13 08:13:25,787 INFO L857 garLoopResultBuilder]: For program point L384-1(line 384) no Hoare annotation was computed. [2021-10-13 08:13:25,788 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-10-13 08:13:25,788 INFO L860 garLoopResultBuilder]: At program point L399(lines 394 400) the Hoare annotation is: true [2021-10-13 08:13:25,788 INFO L857 garLoopResultBuilder]: For program point L391(line 391) no Hoare annotation was computed. [2021-10-13 08:13:25,796 INFO L857 garLoopResultBuilder]: For program point L391-1(line 391) no Hoare annotation was computed. [2021-10-13 08:13:25,796 INFO L857 garLoopResultBuilder]: For program point L391-3(lines 387 393) no Hoare annotation was computed. [2021-10-13 08:13:25,797 INFO L857 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-10-13 08:13:25,797 INFO L857 garLoopResultBuilder]: For program point L3-2(line 3) no Hoare annotation was computed. [2021-10-13 08:13:25,797 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:13:25,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:13:25,798 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:13:25,798 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 385) no Hoare annotation was computed. [2021-10-13 08:13:25,799 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2021-10-13 08:13:25,799 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 392) no Hoare annotation was computed. [2021-10-13 08:13:25,799 INFO L857 garLoopResultBuilder]: For program point L392(line 392) no Hoare annotation was computed. [2021-10-13 08:13:25,799 INFO L857 garLoopResultBuilder]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-10-13 08:13:25,800 INFO L857 garLoopResultBuilder]: For program point L386(lines 386 393) no Hoare annotation was computed. [2021-10-13 08:13:25,805 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:13:25,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:13:25 BoogieIcfgContainer [2021-10-13 08:13:25,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:13:25,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:13:25,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:13:25,813 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:13:25,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:14" (3/4) ... [2021-10-13 08:13:25,817 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:13:25,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-13 08:13:25,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:13:25,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:13:25,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:13:25,892 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:13:25,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:13:25,894 INFO L168 Benchmark]: Toolchain (without parser) took 196463.92 ms. Allocated memory was 52.4 MB in the beginning and 125.8 MB in the end (delta: 73.4 MB). Free memory was 27.5 MB in the beginning and 30.7 MB in the end (delta: -3.3 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:25,895 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 34.0 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:13:25,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 989.22 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 36.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:25,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.67 ms. Allocated memory is still 62.9 MB. Free memory was 36.3 MB in the beginning and 33.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:25,900 INFO L168 Benchmark]: Boogie Preprocessor took 30.46 ms. Allocated memory is still 62.9 MB. Free memory was 33.8 MB in the beginning and 32.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:25,902 INFO L168 Benchmark]: RCFGBuilder took 4406.07 ms. Allocated memory is still 62.9 MB. Free memory was 32.4 MB in the beginning and 36.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:25,902 INFO L168 Benchmark]: TraceAbstraction took 190877.85 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 35.5 MB in the beginning and 33.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:25,903 INFO L168 Benchmark]: Witness Printer took 79.71 ms. Allocated memory is still 125.8 MB. Free memory was 33.9 MB in the beginning and 30.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:25,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 34.0 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 989.22 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 36.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.67 ms. Allocated memory is still 62.9 MB. Free memory was 36.3 MB in the beginning and 33.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.46 ms. Allocated memory is still 62.9 MB. Free memory was 33.8 MB in the beginning and 32.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4406.07 ms. Allocated memory is still 62.9 MB. Free memory was 32.4 MB in the beginning and 36.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 190877.85 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 35.5 MB in the beginning and 33.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. * Witness Printer took 79.71 ms. Allocated memory is still 125.8 MB. Free memory was 33.9 MB in the beginning and 30.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 190804.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 15.6ms, AutomataDifference: 38960.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 49.3ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 20 SDslu, 11 SDs, 0 SdLazy, 39 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 16511.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 77383.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 42.1ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 30.9ms SsaConstructionTime, 2170.8ms SatisfiabilityAnalysisTime, 148354.4ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 5 QuantifiedInterpolants, 496 SizeOfPredicates, 15 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 08:13:26,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6f37f7-84d6-477a-b623-b4240afe1050/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...