./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 960d0951826ec789f14046fc413d6b8700d39528 ........................................................................................................................................................................................................................................ 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_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 960d0951826ec789f14046fc413d6b8700d39528 .................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:26:53,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:26:53,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:26:53,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:26:53,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:26:53,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:26:53,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:26:53,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:26:53,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:26:53,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:26:53,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:26:53,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:26:53,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:26:53,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:26:53,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:26:53,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:26:53,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:26:53,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:26:53,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:26:53,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:26:53,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:26:53,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:26:53,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:26:53,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:26:53,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:26:53,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:26:53,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:26:53,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:26:53,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:26:53,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:26:53,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:26:53,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:26:53,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:26:53,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:26:53,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:26:53,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:26:53,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:26:53,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:26:53,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:26:53,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:26:53,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:26:53,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:26:53,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:26:53,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:26:53,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:26:53,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:26:53,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:26:53,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:26:53,839 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:26:53,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:26:53,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:26:53,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:26:53,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:26:53,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:26:53,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:26:53,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:26:53,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:26:53,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:26:53,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:26:53,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:26:53,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:26:53,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:26:53,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:26:53,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:26:53,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:26:53,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:26:53,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:26:53,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:26:53,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:26:53,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:26:53,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:26:53,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:26:53,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 960d0951826ec789f14046fc413d6b8700d39528 [2021-10-13 00:26:54,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:26:54,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:26:54,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:26:54,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:26:54,230 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:26:54,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-10-13 00:26:54,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/bd202840a/b7fc223b01de4f368d05172a8323bdcc/FLAGbe88ff239 [2021-10-13 00:26:54,878 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:26:54,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/sv-benchmarks/c/float-benchs/loop-1.c [2021-10-13 00:26:54,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/bd202840a/b7fc223b01de4f368d05172a8323bdcc/FLAGbe88ff239 [2021-10-13 00:26:55,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/bd202840a/b7fc223b01de4f368d05172a8323bdcc [2021-10-13 00:26:55,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:26:55,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:26:55,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:55,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:26:55,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:26:55,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557d6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55, skipping insertion in model container [2021-10-13 00:26:55,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:26:55,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:26:55,462 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_febc0a9d-9c85-4e08-88de-14dc4ac89476/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-13 00:26:55,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:55,490 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:26:55,514 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_febc0a9d-9c85-4e08-88de-14dc4ac89476/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-13 00:26:55,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:55,536 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:26:55,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55 WrapperNode [2021-10-13 00:26:55,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:55,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:55,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:26:55,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:26:55,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:55,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:26:55,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:26:55,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:26:55,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:26:55,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:26:55,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:26:55,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:26:55,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (1/1) ... [2021-10-13 00:26:55,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:26:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:55,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:55,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:26:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:26:55,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:26:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:26:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:26:55,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:26:55,998 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 00:26:56,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:56 BoogieIcfgContainer [2021-10-13 00:26:56,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:26:56,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:26:56,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:26:56,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:26:56,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:26:55" (1/3) ... [2021-10-13 00:26:56,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abe9a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:26:56, skipping insertion in model container [2021-10-13 00:26:56,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:55" (2/3) ... [2021-10-13 00:26:56,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abe9a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:26:56, skipping insertion in model container [2021-10-13 00:26:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:56" (3/3) ... [2021-10-13 00:26:56,012 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-10-13 00:26:56,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:26:56,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:26:56,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:26:56,149 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:26:56,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:26:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:56,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:26:56,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:26:56,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:26:56,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:26:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-13 00:26:56,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:56,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072428161] [2021-10-13 00:26:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:56,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:56,323 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:56,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:56,385 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:26:56,387 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:26:56,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:26:56,398 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:26:56,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:26:56 BoogieIcfgContainer [2021-10-13 00:26:56,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:26:56,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:26:56,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:26:56,417 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:26:56,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:56" (3/4) ... [2021-10-13 00:26:56,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:26:56,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:26:56,424 INFO L168 Benchmark]: Toolchain (without parser) took 1170.70 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 74.1 MB in the beginning and 109.9 MB in the end (delta: -35.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:56,425 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory is still 74.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:56,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.73 ms. Allocated memory is still 102.8 MB. Free memory was 73.8 MB in the beginning and 64.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:56,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.18 ms. Allocated memory is still 102.8 MB. Free memory was 64.5 MB in the beginning and 63.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:56,428 INFO L168 Benchmark]: Boogie Preprocessor took 44.42 ms. Allocated memory is still 102.8 MB. Free memory was 63.0 MB in the beginning and 62.1 MB in the end (delta: 913.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:56,430 INFO L168 Benchmark]: RCFGBuilder took 365.93 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 53.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:56,431 INFO L168 Benchmark]: TraceAbstraction took 413.14 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 52.9 MB in the beginning and 110.5 MB in the end (delta: -57.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:56,432 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 142.6 MB. Free memory was 110.5 MB in the beginning and 109.9 MB in the end (delta: 572.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:56,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory is still 74.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.73 ms. Allocated memory is still 102.8 MB. Free memory was 73.8 MB in the beginning and 64.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.18 ms. Allocated memory is still 102.8 MB. Free memory was 64.5 MB in the beginning and 63.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.42 ms. Allocated memory is still 102.8 MB. Free memory was 63.0 MB in the beginning and 62.1 MB in the end (delta: 913.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 365.93 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 53.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 413.14 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 52.9 MB in the beginning and 110.5 MB in the end (delta: -57.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.35 ms. Allocated memory is still 142.6 MB. Free memory was 110.5 MB in the beginning and 109.9 MB in the end (delta: 572.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 20, overapproximation of someBinaryDOUBLEComparisonOperation at line 20. Possible FailurePath: [L8] float x, y, z; [L10] x = 1.f [L11] y = 1e7 [L12] z = 42.f [L14] COND FALSE !(x < y) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 257.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 15.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.8ms SsaConstructionTime, 50.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:26:56,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:26:59,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:26:59,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:26:59,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:26:59,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:26:59,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:26:59,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:26:59,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:26:59,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:26:59,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:26:59,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:26:59,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:26:59,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:26:59,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:26:59,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:26:59,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:26:59,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:26:59,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:26:59,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:26:59,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:26:59,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:26:59,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:26:59,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:26:59,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:26:59,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:26:59,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:26:59,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:26:59,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:26:59,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:26:59,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:26:59,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:26:59,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:26:59,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:26:59,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:26:59,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:26:59,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:26:59,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:26:59,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:26:59,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:26:59,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:26:59,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:26:59,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 00:26:59,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:26:59,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:26:59,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:26:59,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:26:59,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:26:59,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:26:59,408 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:26:59,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:26:59,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:26:59,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:26:59,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:26:59,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:26:59,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:26:59,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:26:59,411 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:26:59,411 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:26:59,411 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:26:59,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:26:59,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:26:59,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:26:59,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:26:59,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:26:59,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:26:59,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:26:59,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:26:59,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:26:59,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:26:59,415 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:26:59,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:26:59,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:26:59,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:26:59,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:26:59,416 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_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 960d0951826ec789f14046fc413d6b8700d39528 [2021-10-13 00:26:59,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:26:59,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:26:59,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:26:59,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:26:59,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:26:59,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-10-13 00:27:00,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/931092e86/b7affeb680764efbbfbba12482f8f4e7/FLAG3256f91b6 [2021-10-13 00:27:00,692 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:27:00,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/sv-benchmarks/c/float-benchs/loop-1.c [2021-10-13 00:27:00,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/931092e86/b7affeb680764efbbfbba12482f8f4e7/FLAG3256f91b6 [2021-10-13 00:27:01,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/data/931092e86/b7affeb680764efbbfbba12482f8f4e7 [2021-10-13 00:27:01,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:27:01,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:27:01,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:27:01,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:27:01,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:27:01,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266996ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01, skipping insertion in model container [2021-10-13 00:27:01,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:27:01,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:27:01,275 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_febc0a9d-9c85-4e08-88de-14dc4ac89476/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-13 00:27:01,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:27:01,309 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:27:01,323 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_febc0a9d-9c85-4e08-88de-14dc4ac89476/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-13 00:27:01,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:27:01,360 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:27:01,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01 WrapperNode [2021-10-13 00:27:01,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:27:01,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:27:01,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:27:01,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:27:01,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:27:01,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:27:01,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:27:01,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:27:01,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:27:01,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:27:01,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:27:01,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:27:01,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (1/1) ... [2021-10-13 00:27:01,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:27:01,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:27:01,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:27:01,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:27:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:27:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:27:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:27:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:27:02,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:27:02,337 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 00:27:02,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:02 BoogieIcfgContainer [2021-10-13 00:27:02,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:27:02,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:27:02,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:27:02,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:27:02,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:27:01" (1/3) ... [2021-10-13 00:27:02,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eea350c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:27:02, skipping insertion in model container [2021-10-13 00:27:02,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:01" (2/3) ... [2021-10-13 00:27:02,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eea350c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:27:02, skipping insertion in model container [2021-10-13 00:27:02,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:02" (3/3) ... [2021-10-13 00:27:02,350 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-10-13 00:27:02,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:27:02,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:27:02,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:27:02,432 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:27:02,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:27:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:27:02,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:27:02,483 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:27:02,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:27:02,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:27:02,521 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-13 00:27:02,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:27:02,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405752459] [2021-10-13 00:27:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:27:02,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:27:02,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:27:02,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:27:02,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:27:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:27:02,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:27:02,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:27:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:02,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:27:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:02,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:27:02,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405752459] [2021-10-13 00:27:02,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405752459] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:27:02,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:27:02,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:27:02,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645354803] [2021-10-13 00:27:02,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:27:02,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:27:02,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:27:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:27:02,968 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-10-13 00:27:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:27:03,902 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-13 00:27:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:27:03,904 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 [2021-10-13 00:27:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:27:03,914 INFO L225 Difference]: With dead ends: 21 [2021-10-13 00:27:03,915 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 00:27:03,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:27:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 00:27:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 00:27:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 00:27:03,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-13 00:27:03,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:27:03,952 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 00:27:03,952 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) [2021-10-13 00:27:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 00:27:03,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:27:03,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:27:03,953 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:27:03,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:27:04,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:27:04,159 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:27:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:27:04,161 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-10-13 00:27:04,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:27:04,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620903969] [2021-10-13 00:27:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:27:04,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:27:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:27:04,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:27:04,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:27:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:27:04,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:27:04,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:27:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:04,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:27:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:23,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:27:23,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620903969] [2021-10-13 00:27:23,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620903969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:27:23,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:27:23,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 00:27:23,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881358531] [2021-10-13 00:27:23,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:27:23,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:27:23,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:27:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=43, Unknown=3, NotChecked=0, Total=72 [2021-10-13 00:27:23,026 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:42,699 WARN L207 SmtUtils]: Spent 9.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-13 00:28:02,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:02,060 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-13 00:28:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:28:02,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:28:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:02,067 INFO L225 Difference]: With dead ends: 17 [2021-10-13 00:28:02,067 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 00:28:02,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 38259.2ms TimeCoverageRelationStatistics Valid=60, Invalid=93, Unknown=3, NotChecked=0, Total=156 [2021-10-13 00:28:02,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 00:28:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 00:28:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:28:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 00:28:02,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-10-13 00:28:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:02,074 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 00:28:02,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:28:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 00:28:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:28:02,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:02,075 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:02,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:02,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:02,277 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:28:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2021-10-13 00:28:02,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:02,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285080430] [2021-10-13 00:28:02,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:28:02,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:02,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:02,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:02,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:28:02,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:28:02,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:28:02,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:28:02,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:06,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:29:11,718 WARN L207 SmtUtils]: Spent 6.53 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-13 00:29:21,787 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-10-13 00:29:32,652 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-10-13 00:29:42,116 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from false [2021-10-13 00:29:44,141 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from true [2021-10-13 00:29:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 3 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-13 00:29:44,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:29:44,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285080430] [2021-10-13 00:29:44,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285080430] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:29:44,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:29:44,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-13 00:29:44,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156809255] [2021-10-13 00:29:44,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:29:44,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:29:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:29:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=172, Unknown=9, NotChecked=90, Total=342 [2021-10-13 00:29:44,161 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:30:50,267 WARN L207 SmtUtils]: Spent 18.33 s on a formula simplification. DAG size of input: 25 DAG size of output: 15 [2021-10-13 00:31:23,781 WARN L207 SmtUtils]: Spent 19.09 s on a formula simplification. DAG size of input: 21 DAG size of output: 17 [2021-10-13 00:31:29,003 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse4))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse4)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.geq .cse3 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1)))))) is different from true [2021-10-13 00:31:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:31,049 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-13 00:31:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:31:31,081 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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 [2021-10-13 00:31:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:31,081 INFO L225 Difference]: With dead ends: 17 [2021-10-13 00:31:31,081 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:31:31,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 154567.9ms TimeCoverageRelationStatistics Valid=114, Invalid=233, Unknown=11, NotChecked=148, Total=506 [2021-10-13 00:31:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:31:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:31:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:31:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:31:31,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-13 00:31:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:31,083 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:31:31,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:31:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:31:31,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:31:31,085 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:31:31,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:31,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:31,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:31:31,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:31,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:31,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:56,038 WARN L207 SmtUtils]: Spent 24.65 s on a formula simplification. DAG size of input: 67 DAG size of output: 15 [2021-10-13 00:31:56,039 INFO L860 garLoopResultBuilder]: At program point L4-3(line 4) the Hoare annotation is: true [2021-10-13 00:31:56,040 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:31:56,040 INFO L860 garLoopResultBuilder]: At program point L21(lines 6 22) the Hoare annotation is: true [2021-10-13 00:31:56,040 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:31:56,040 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:31:56,040 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:31:56,040 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2021-10-13 00:31:56,041 INFO L853 garLoopResultBuilder]: At program point L14-2(lines 14 18) the Hoare annotation is: (and (fp.geq ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) currentRoundingMode (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode 1.0))) (fp.add currentRoundingMode (fp.add currentRoundingMode ULTIMATE.start_main_~z~0 .cse0) .cse0))) ((_ to_fp 11 53) currentRoundingMode 100000000.0)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-13 00:31:56,041 INFO L857 garLoopResultBuilder]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2021-10-13 00:31:56,041 INFO L857 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2021-10-13 00:31:56,041 INFO L857 garLoopResultBuilder]: For program point L4-1(line 4) no Hoare annotation was computed. [2021-10-13 00:31:56,045 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:31:56,056 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:31:56,061 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:31:56,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:31:56 BoogieIcfgContainer [2021-10-13 00:31:56,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:31:56,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:31:56,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:31:56,067 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:31:56,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:02" (3/4) ... [2021-10-13 00:31:56,070 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:31:56,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:31:56,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:31:56,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 00:31:56,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:31:56,124 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:31:56,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:31:56,126 INFO L168 Benchmark]: Toolchain (without parser) took 295052.17 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.8 MB in the beginning and 41.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:56,128 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:31:56,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.43 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 42.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:56,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.80 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:56,129 INFO L168 Benchmark]: Boogie Preprocessor took 65.94 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 39.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:31:56,129 INFO L168 Benchmark]: RCFGBuilder took 836.05 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 30.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:56,132 INFO L168 Benchmark]: TraceAbstraction took 293723.22 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.9 MB in the beginning and 43.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:56,133 INFO L168 Benchmark]: Witness Printer took 58.49 ms. Allocated memory is still 77.6 MB. Free memory was 43.9 MB in the beginning and 41.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:56,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.43 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 42.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.80 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.94 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 39.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 836.05 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 30.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 293723.22 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.9 MB in the beginning and 43.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Witness Printer took 58.49 ms. Allocated memory is still 77.6 MB. Free memory was 43.9 MB in the beginning and 41.3 MB in the end (delta: 2.6 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 ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 4]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 293627.9ms, OverallIterations: 3, TraceHistogramMax: 6, EmptinessCheckTime: 12.7ms, AutomataDifference: 146937.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 24749.8ms, InitialAbstractionConstructionTime: 38.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 21 SDslu, 29 SDs, 0 SdLazy, 118 SolverSat, 30 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 37764.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 192874.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=2, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 97.3ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 310 FormulaSimplificationTreeSizeReductionInter, 24647.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 52.4ms SsaConstructionTime, 728.6ms SatisfiabilityAnalysisTime, 120175.2ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 1 QuantifiedInterpolants, 667 SizeOfPredicates, 10 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/48 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 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2021-10-13 00:31:56,148 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:31:56,152 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) && ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, z, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E8))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-13 00:31:56,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_febc0a9d-9c85-4e08-88de-14dc4ac89476/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...