./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs --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 91c18909fa64fb894260d901851992225c0131b1 ...................................................................................................................................................................... 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_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs --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 91c18909fa64fb894260d901851992225c0131b1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:09:44,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:09:44,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:09:44,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:09:44,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:09:44,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:09:44,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:09:44,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:09:44,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:09:44,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:09:44,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:09:44,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:09:44,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:09:44,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:09:44,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:09:44,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:09:44,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:09:44,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:09:44,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:09:44,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:09:44,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:09:44,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:09:44,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:09:44,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:09:44,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:09:44,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:09:44,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:09:44,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:09:44,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:09:44,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:09:44,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:09:44,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:09:44,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:09:44,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:09:44,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:09:44,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:09:44,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:09:44,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:09:44,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:09:44,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:09:44,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:09:44,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:09:44,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:09:44,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:09:44,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:09:44,831 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:09:44,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:09:44,832 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:09:44,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:09:44,832 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:09:44,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:09:44,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:09:44,833 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:09:44,833 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:09:44,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:09:44,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:09:44,834 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:09:44,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:09:44,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:09:44,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:09:44,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:09:44,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:09:44,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:09:44,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:09:44,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:09:44,836 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:09:44,836 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:09:44,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:09:44,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:09:44,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:09:44,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:09:44,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:09:44,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:09:44,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:09:44,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:09:44,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:09:44,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:09:44,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:09:44,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:09:44,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:09:44,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:09:44,840 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_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91c18909fa64fb894260d901851992225c0131b1 [2021-10-16 02:09:45,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:09:45,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:09:45,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:09:45,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:09:45,128 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:09:45,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2021-10-16 02:09:45,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/b04aab238/42be098a55a34845bcc09e0bea1dbae9/FLAG5f4e51d80 [2021-10-16 02:09:45,720 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:09:45,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2021-10-16 02:09:45,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/b04aab238/42be098a55a34845bcc09e0bea1dbae9/FLAG5f4e51d80 [2021-10-16 02:09:46,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/b04aab238/42be098a55a34845bcc09e0bea1dbae9 [2021-10-16 02:09:46,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:09:46,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:09:46,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:09:46,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:09:46,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:09:46,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:09:46" (1/1) ... [2021-10-16 02:09:46,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d006b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:46, skipping insertion in model container [2021-10-16 02:09:46,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:09:46" (1/1) ... [2021-10-16 02:09:46,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:09:46,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:09:46,576 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: fesetround not supported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBuiltinFesetround(IntegerTranslation.java:959) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleBuiltinFesetround(StandardFunctionHandler.java:1384) 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: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) [2021-10-16 02:09:46,582 INFO L168 Benchmark]: Toolchain (without parser) took 555.75 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 52.6 MB in the beginning and 101.1 MB in the end (delta: -48.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:46,583 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:09:46,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.01 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 52.4 MB in the beginning and 101.1 MB in the end (delta: -48.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:46,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 548.01 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 52.4 MB in the beginning and 101.1 MB in the end (delta: -48.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: fesetround not supported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: fesetround not supported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBuiltinFesetround(IntegerTranslation.java:959) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:09:48,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:09:48,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:09:48,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:09:48,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:09:48,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:09:48,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:09:48,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:09:48,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:09:48,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:09:48,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:09:48,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:09:48,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:09:48,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:09:48,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:09:48,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:09:48,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:09:48,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:09:48,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:09:49,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:09:49,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:09:49,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:09:49,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:09:49,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:09:49,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:09:49,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:09:49,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:09:49,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:09:49,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:09:49,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:09:49,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:09:49,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:09:49,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:09:49,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:09:49,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:09:49,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:09:49,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:09:49,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:09:49,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:09:49,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:09:49,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:09:49,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:09:49,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:09:49,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:09:49,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:09:49,087 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:09:49,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:09:49,087 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:09:49,087 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:09:49,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:09:49,088 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:09:49,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:09:49,090 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:09:49,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:09:49,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:09:49,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:09:49,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:09:49,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:09:49,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:09:49,092 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:09:49,092 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:09:49,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:09:49,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:09:49,093 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:09:49,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:09:49,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:09:49,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:09:49,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:09:49,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:09:49,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:09:49,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:09:49,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:09:49,095 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:09:49,096 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:09:49,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:09:49,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:09:49,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:09:49,097 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_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91c18909fa64fb894260d901851992225c0131b1 [2021-10-16 02:09:49,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:09:49,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:09:49,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:09:49,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:09:49,550 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:09:49,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2021-10-16 02:09:49,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/514dddd0b/109bdf92376d43df9565ee8b300073e2/FLAG7f4a9941a [2021-10-16 02:09:50,326 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:09:50,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2021-10-16 02:09:50,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/514dddd0b/109bdf92376d43df9565ee8b300073e2/FLAG7f4a9941a [2021-10-16 02:09:50,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/data/514dddd0b/109bdf92376d43df9565ee8b300073e2 [2021-10-16 02:09:50,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:09:50,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:09:50,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:09:50,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:09:50,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:09:50,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:09:50" (1/1) ... [2021-10-16 02:09:50,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2505c85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:50, skipping insertion in model container [2021-10-16 02:09:50,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:09:50" (1/1) ... [2021-10-16 02:09:50,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:09:50,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:09:51,101 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_261fb01a-1683-42fe-8b9b-61e8cffb4026/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i[42829,42842] [2021-10-16 02:09:51,104 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_261fb01a-1683-42fe-8b9b-61e8cffb4026/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i[42946,42959] [2021-10-16 02:09:51,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:09:51,123 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:09:51,157 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_261fb01a-1683-42fe-8b9b-61e8cffb4026/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i[42829,42842] [2021-10-16 02:09:51,181 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_261fb01a-1683-42fe-8b9b-61e8cffb4026/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i[42946,42959] [2021-10-16 02:09:51,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:09:51,300 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:09:51,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51 WrapperNode [2021-10-16 02:09:51,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:09:51,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:09:51,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:09:51,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:09:51,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:09:51,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:09:51,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:09:51,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:09:51,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:09:51,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:09:51,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:09:51,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:09:51,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (1/1) ... [2021-10-16 02:09:51,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:09:51,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:09:51,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:09:51,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:09:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:09:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:09:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:09:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:09:51,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:09:51,972 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-16 02:09:51,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:51 BoogieIcfgContainer [2021-10-16 02:09:51,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:09:51,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:09:51,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:09:51,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:09:51,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:09:50" (1/3) ... [2021-10-16 02:09:51,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473eafa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:09:51, skipping insertion in model container [2021-10-16 02:09:51,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:51" (2/3) ... [2021-10-16 02:09:51,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473eafa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:09:51, skipping insertion in model container [2021-10-16 02:09:51,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:51" (3/3) ... [2021-10-16 02:09:51,982 INFO L111 eAbstractionObserver]: Analyzing ICFG float-rounding1.i [2021-10-16 02:09:51,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:09:51,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-16 02:09:52,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:09:52,052 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 [2021-10-16 02:09:52,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 02:09:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 40 states have (on average 1.65) internal successors, (66), 44 states have internal predecessors, (66), 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) [2021-10-16 02:09:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:09:52,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:52,072 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:09:52,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:09:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash 889523607, now seen corresponding path program 1 times [2021-10-16 02:09:52,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:52,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533268143] [2021-10-16 02:09:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:52,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:52,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:52,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:52,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:09:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:52,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:52,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:52,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:52,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:52,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533268143] [2021-10-16 02:09:52,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533268143] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:52,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:52,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:09:52,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106286226] [2021-10-16 02:09:52,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:52,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:52,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:52,292 INFO L87 Difference]: Start difference. First operand has 45 states, 40 states have (on average 1.65) internal successors, (66), 44 states have internal predecessors, (66), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-16 02:09:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:52,406 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2021-10-16 02:09:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:09:52,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 [2021-10-16 02:09:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:52,418 INFO L225 Difference]: With dead ends: 99 [2021-10-16 02:09:52,418 INFO L226 Difference]: Without dead ends: 50 [2021-10-16 02:09:52,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-16 02:09:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2021-10-16 02:09:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 36 states have internal predecessors, (42), 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) [2021-10-16 02:09:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-10-16 02:09:52,456 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 6 [2021-10-16 02:09:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:52,457 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-10-16 02:09:52,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-16 02:09:52,457 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-10-16 02:09:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:09:52,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:52,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:52,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:09:52,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:52,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:09:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:52,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1806855123, now seen corresponding path program 1 times [2021-10-16 02:09:52,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:52,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490599994] [2021-10-16 02:09:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:52,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:52,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:52,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:52,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:09:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:52,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:09:52,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:53,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:54,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:54,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490599994] [2021-10-16 02:09:54,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490599994] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:54,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:54,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:09:54,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080395094] [2021-10-16 02:09:54,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:09:54,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:09:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:09:54,726 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-16 02:09:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:56,842 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2021-10-16 02:09:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:09:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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 7 [2021-10-16 02:09:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:56,844 INFO L225 Difference]: With dead ends: 59 [2021-10-16 02:09:56,844 INFO L226 Difference]: Without dead ends: 57 [2021-10-16 02:09:56,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1892.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:09:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-16 02:09:56,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35. [2021-10-16 02:09:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 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) [2021-10-16 02:09:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-10-16 02:09:56,851 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 7 [2021-10-16 02:09:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:56,852 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-10-16 02:09:56,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-16 02:09:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-10-16 02:09:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:09:56,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:56,853 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:56,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:57,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:57,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:09:57,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:57,065 INFO L82 PathProgramCache]: Analyzing trace with hash -260891071, now seen corresponding path program 1 times [2021-10-16 02:09:57,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:57,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409213295] [2021-10-16 02:09:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:57,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:57,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:57,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:57,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:09:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:57,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:57,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:57,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:57,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:57,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409213295] [2021-10-16 02:09:57,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409213295] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:57,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:57,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:09:57,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374022122] [2021-10-16 02:09:57,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:57,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:57,295 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-10-16 02:09:57,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:57,337 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-16 02:09:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:57,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 12 [2021-10-16 02:09:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:57,339 INFO L225 Difference]: With dead ends: 59 [2021-10-16 02:09:57,339 INFO L226 Difference]: Without dead ends: 35 [2021-10-16 02:09:57,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-16 02:09:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-16 02:09:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.0625) internal successors, (34), 34 states have internal predecessors, (34), 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) [2021-10-16 02:09:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2021-10-16 02:09:57,344 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 12 [2021-10-16 02:09:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:57,345 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2021-10-16 02:09:57,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-10-16 02:09:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2021-10-16 02:09:57,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:09:57,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:57,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:57,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:57,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:57,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:09:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1557632932, now seen corresponding path program 1 times [2021-10-16 02:09:57,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:57,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408752744] [2021-10-16 02:09:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:57,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:57,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:57,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:57,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:09:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:57,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:09:57,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:58,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:01,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:01,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408752744] [2021-10-16 02:10:01,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408752744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:01,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:01,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:10:01,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580175263] [2021-10-16 02:10:01,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:10:01,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:10:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:10:01,510 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-16 02:10:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:02,614 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2021-10-16 02:10:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:10:02,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 14 [2021-10-16 02:10:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:02,618 INFO L225 Difference]: With dead ends: 35 [2021-10-16 02:10:02,618 INFO L226 Difference]: Without dead ends: 33 [2021-10-16 02:10:02,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1845.1ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:10:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-16 02:10:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-16 02:10:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 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) [2021-10-16 02:10:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2021-10-16 02:10:02,622 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 14 [2021-10-16 02:10:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:02,622 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2021-10-16 02:10:02,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-16 02:10:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2021-10-16 02:10:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:10:02,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:02,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:10:02,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:02,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:02,824 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:10:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:02,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1314857025, now seen corresponding path program 1 times [2021-10-16 02:10:02,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:10:02,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077714364] [2021-10-16 02:10:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:02,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:10:02,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:10:02,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:10:02,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:10:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:02,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:10:02,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:05,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:12,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:12,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077714364] [2021-10-16 02:10:12,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077714364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:12,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:12,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-16 02:10:12,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621652181] [2021-10-16 02:10:12,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:10:12,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:10:12,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:10:12,129 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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) [2021-10-16 02:10:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:16,840 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-10-16 02:10:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:10:16,841 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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 23 [2021-10-16 02:10:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:16,842 INFO L225 Difference]: With dead ends: 33 [2021-10-16 02:10:16,843 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 02:10:16,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 9535.8ms TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-10-16 02:10:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 02:10:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-16 02:10:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0) internal successors, (30), 30 states have internal predecessors, (30), 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) [2021-10-16 02:10:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2021-10-16 02:10:16,848 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 23 [2021-10-16 02:10:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:16,848 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2021-10-16 02:10:16,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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) [2021-10-16 02:10:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2021-10-16 02:10:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:10:16,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:16,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:10:16,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:17,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:17,064 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:10:17,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash 240169883, now seen corresponding path program 1 times [2021-10-16 02:10:17,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:10:17,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121928283] [2021-10-16 02:10:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:17,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:10:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:10:17,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:10:17,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:10:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:17,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:10:17,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:19,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:32,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:32,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121928283] [2021-10-16 02:10:32,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121928283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:32,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:32,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-16 02:10:32,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991723888] [2021-10-16 02:10:32,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:10:32,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:32,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:10:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:10:32,322 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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) [2021-10-16 02:10:39,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:39,931 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2021-10-16 02:10:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:10:39,936 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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 30 [2021-10-16 02:10:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:39,937 INFO L225 Difference]: With dead ends: 31 [2021-10-16 02:10:39,937 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:10:39,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 15296.8ms TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:10:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:10:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:10:39,938 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) [2021-10-16 02:10:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:10:39,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-10-16 02:10:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:39,939 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:10:39,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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) [2021-10-16 02:10:39,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:10:39,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:10:39,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:39,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:39,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:39,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:39,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:40,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:40,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:10:40,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:40,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:40,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:40,517 INFO L857 garLoopResultBuilder]: For program point L2-1(lines 2 4) no Hoare annotation was computed. [2021-10-16 02:10:40,517 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 1110) no Hoare annotation was computed. [2021-10-16 02:10:40,518 INFO L857 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-10-16 02:10:40,518 INFO L857 garLoopResultBuilder]: For program point L3-2(line 3) no Hoare annotation was computed. [2021-10-16 02:10:40,518 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,518 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,518 INFO L857 garLoopResultBuilder]: For program point L1110(line 1110) no Hoare annotation was computed. [2021-10-16 02:10:40,518 INFO L857 garLoopResultBuilder]: For program point L1110-1(line 1110) no Hoare annotation was computed. [2021-10-16 02:10:40,518 INFO L853 garLoopResultBuilder]: At program point L1110-3(lines 1097 1113) the Hoare annotation is: (and (fp.eq ULTIMATE.start_roundingTest_~roundToNearestSum~0 ((_ to_fp 8 24) currentRoundingMode (/ 8388609.0 8388608.0))) (= currentRoundingMode roundTowardNegative) (exists ((v_currentRoundingMode_37 RoundingMode)) (= ULTIMATE.start_roundingTest_~roundDownSum~0 (fp.add currentRoundingMode ((_ to_fp 8 24) v_currentRoundingMode_37 ((_ to_fp 11 53) v_currentRoundingMode_37 1.0)) ((_ to_fp 8 24) v_currentRoundingMode_37 ((_ to_fp 11 53) v_currentRoundingMode_37 (/ 3.0 33554432.0)))))) (exists ((currentRoundingMode RoundingMode)) (and (= ULTIMATE.start_roundingTest_~f2 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 3.0 33554432.0)))) (= ULTIMATE.start_roundingTest_~f1 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))))) (= (_ bv1024 32) ULTIMATE.start_ULTIMATE.setCurrentRoundingMode_i)) [2021-10-16 02:10:40,519 INFO L857 garLoopResultBuilder]: For program point L1110-4(line 1110) no Hoare annotation was computed. [2021-10-16 02:10:40,519 INFO L857 garLoopResultBuilder]: For program point L1110-5(line 1110) no Hoare annotation was computed. [2021-10-16 02:10:40,519 INFO L853 garLoopResultBuilder]: At program point L1110-7(lines 1097 1113) the Hoare annotation is: (not (= (_ bv3072 32) ULTIMATE.start_ULTIMATE.setCurrentRoundingMode_i)) [2021-10-16 02:10:40,519 INFO L853 garLoopResultBuilder]: At program point L1135(lines 1116 1136) the Hoare annotation is: (not (= (_ bv3072 32) ULTIMATE.start_ULTIMATE.setCurrentRoundingMode_i)) [2021-10-16 02:10:40,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 1110) no Hoare annotation was computed. [2021-10-16 02:10:40,519 INFO L857 garLoopResultBuilder]: For program point L1103(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,519 INFO L857 garLoopResultBuilder]: For program point L1103-1(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,519 INFO L857 garLoopResultBuilder]: For program point L1103-3(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L1103-4(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L1103-5(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L1103-7(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L-1-3(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L-1-5(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point L-1-7(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,520 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-9(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-10(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-12(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-14(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-16(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-18(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-19(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-21(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-23(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,521 INFO L857 garLoopResultBuilder]: For program point L-1-25(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point L-1-27(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point L-1-28(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point L-1-30(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point L-1-32(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point L-1-34(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point L-1-36(line -1) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 1103) no Hoare annotation was computed. [2021-10-16 02:10:40,522 INFO L857 garLoopResultBuilder]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-10-16 02:10:40,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:10:40,545 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundTowardNegative [2021-10-16 02:10:40,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,546 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,547 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,547 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,549 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,549 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,555 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundTowardNegative [2021-10-16 02:10:40,556 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,556 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,556 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,556 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,556 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,557 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:10:40 BoogieIcfgContainer [2021-10-16 02:10:40,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:10:40,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:10:40,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:10:40,568 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:10:40,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:51" (3/4) ... [2021-10-16 02:10:40,571 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:10:40,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2021-10-16 02:10:40,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-16 02:10:40,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-16 02:10:40,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-16 02:10:40,616 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.eq~FLOAT(roundToNearestSum, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 8388609/8388608)) && unknown-currentRoundingMode-unknown == ~roundTowardNegative) && (\exists v_currentRoundingMode_37 : FloatRoundingMode :: roundDownSum == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, 1.0)), ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, 3/33554432))))) && (\exists currentRoundingMode : FloatRoundingMode :: f2 == ~to_fp~LONGDOUBLE(currentRoundingMode, ~to_fp~LONGDOUBLE(currentRoundingMode, 3/33554432)) && f1 == ~to_fp~LONGDOUBLE(currentRoundingMode, ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)))) && 1024bv32 == unknown-i-unknown [2021-10-16 02:10:40,643 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:10:40,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:10:40,645 INFO L168 Benchmark]: Toolchain (without parser) took 50079.14 ms. Allocated memory was 52.4 MB in the beginning and 79.7 MB in the end (delta: 27.3 MB). Free memory was 27.9 MB in the beginning and 54.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:40,645 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 33.3 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:10:40,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.59 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.7 MB in the beginning and 33.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:40,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.05 ms. Allocated memory is still 65.0 MB. Free memory was 33.5 MB in the beginning and 45.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:40,647 INFO L168 Benchmark]: Boogie Preprocessor took 29.11 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 43.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:40,647 INFO L168 Benchmark]: RCFGBuilder took 576.75 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 31.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:40,648 INFO L168 Benchmark]: TraceAbstraction took 48584.65 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 31.2 MB in the beginning and 24.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:40,648 INFO L168 Benchmark]: Witness Printer took 77.16 ms. Allocated memory is still 79.7 MB. Free memory was 57.4 MB in the beginning and 54.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:40,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 33.3 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 720.59 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.7 MB in the beginning and 33.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.05 ms. Allocated memory is still 65.0 MB. Free memory was 33.5 MB in the beginning and 45.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.11 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 43.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 576.75 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 31.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 48584.65 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 31.2 MB in the beginning and 24.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 77.16 ms. Allocated memory is still 79.7 MB. Free memory was 57.4 MB in the beginning and 54.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundTowardNegative - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundTowardNegative - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 1103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1110]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1110]: 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, 45 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 48487.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.1ms, AutomataDifference: 15751.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 365.4ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 147 SDtfs, 448 SDslu, 230 SDs, 0 SdLazy, 332 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6991.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 28588.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.5ms AutomataMinimizationTime, 6 MinimizatonAttempts, 35 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 88.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 271.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 49.2ms SsaConstructionTime, 478.6ms SatisfiabilityAnalysisTime, 30143.5ms InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 172 ConstructedInterpolants, 36 QuantifiedInterpolants, 1283 SizeOfPredicates, 49 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 4 specifications checked. All of them hold - InvariantResult [Line: 1097]: Loop Invariant [2021-10-16 02:10:40,663 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundTowardNegative [2021-10-16 02:10:40,663 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,665 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,665 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundTowardNegative [2021-10-16 02:10:40,666 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,666 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,666 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,667 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_currentRoundingMode_37,QUANTIFIED] [2021-10-16 02:10:40,667 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,667 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,667 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:10:40,667 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((~fp.eq~FLOAT(roundToNearestSum, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 8388609/8388608)) && unknown-currentRoundingMode-unknown == ~roundTowardNegative) && (\exists v_currentRoundingMode_37 : FloatRoundingMode :: roundDownSum == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, 1.0)), ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, ~to_fp~LONGDOUBLE(v_currentRoundingMode_37, 3/33554432))))) && (\exists currentRoundingMode : FloatRoundingMode :: f2 == ~to_fp~LONGDOUBLE(currentRoundingMode, ~to_fp~LONGDOUBLE(currentRoundingMode, 3/33554432)) && f1 == ~to_fp~LONGDOUBLE(currentRoundingMode, ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)))) && 1024bv32 == unknown-i-unknown - InvariantResult [Line: 1116]: Loop Invariant Derived loop invariant: !(3072bv32 == unknown-i-unknown) - InvariantResult [Line: 1097]: Loop Invariant Derived loop invariant: !(3072bv32 == unknown-i-unknown) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:10:40,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261fb01a-1683-42fe-8b9b-61e8cffb4026/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...