./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/water_pid.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_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5c464086249e43e194470df21028d8e5ac1a606 ........................................................................................................................................................................................................................................................................... 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_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5c464086249e43e194470df21028d8e5ac1a606 ......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:03:17,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:03:17,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:03:17,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:03:17,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:03:17,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:03:17,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:03:17,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:03:17,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:03:17,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:03:17,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:03:17,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:03:17,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:03:17,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:03:17,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:03:17,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:03:17,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:03:17,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:03:17,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:03:17,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:03:17,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:03:17,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:03:17,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:03:17,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:03:17,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:03:17,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:03:17,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:03:17,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:03:17,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:03:17,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:03:17,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:03:17,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:03:17,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:03:17,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:03:17,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:03:17,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:03:17,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:03:17,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:03:17,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:03:17,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:03:17,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:03:17,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:03:17,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:03:17,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:03:17,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:03:17,936 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:03:17,936 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:03:17,937 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:03:17,937 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:03:17,938 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:03:17,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:03:17,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:03:17,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:03:17,939 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:03:17,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:03:17,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:03:17,941 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:03:17,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:03:17,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:03:17,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:03:17,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:03:17,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:03:17,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:03:17,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:03:17,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:03:17,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:03:17,945 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:03:17,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:03:17,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:03:17,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:03:17,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:03:17,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:03:17,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:17,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:03:17,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:03:17,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:03:17,949 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:03:17,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:03:17,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:03:17,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:03:17,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:03:17,950 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c464086249e43e194470df21028d8e5ac1a606 [2021-10-13 07:03:18,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:03:18,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:03:18,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:03:18,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:03:18,371 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:03:18,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/water_pid.c [2021-10-13 07:03:18,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/d012747cd/997eb455ab2c4ac4916c6c8d199863d4/FLAG1c8498b75 [2021-10-13 07:03:19,054 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:03:19,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/sv-benchmarks/c/float-benchs/water_pid.c [2021-10-13 07:03:19,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/d012747cd/997eb455ab2c4ac4916c6c8d199863d4/FLAG1c8498b75 [2021-10-13 07:03:19,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/d012747cd/997eb455ab2c4ac4916c6c8d199863d4 [2021-10-13 07:03:19,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:03:19,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:03:19,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:19,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:03:19,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:03:19,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e121936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19, skipping insertion in model container [2021-10-13 07:03:19,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:03:19,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:03:19,674 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_5c8e1eef-59dc-40fd-9925-40870a662dcd/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-13 07:03:19,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:19,722 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:03:19,734 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_5c8e1eef-59dc-40fd-9925-40870a662dcd/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-13 07:03:19,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:19,756 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:03:19,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19 WrapperNode [2021-10-13 07:03:19,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:19,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:19,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:03:19,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:03:19,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:19,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:03:19,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:03:19,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:03:19,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:03:19,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:03:19,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:03:19,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:03:19,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (1/1) ... [2021-10-13 07:03:19,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:19,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:03:19,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:03:19,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:03:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:03:19,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:03:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:03:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:03:20,229 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:03:20,230 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-13 07:03:20,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:20 BoogieIcfgContainer [2021-10-13 07:03:20,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:03:20,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:03:20,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:03:20,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:03:20,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:03:19" (1/3) ... [2021-10-13 07:03:20,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f826b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:20, skipping insertion in model container [2021-10-13 07:03:20,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:19" (2/3) ... [2021-10-13 07:03:20,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f826b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:20, skipping insertion in model container [2021-10-13 07:03:20,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:20" (3/3) ... [2021-10-13 07:03:20,242 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-10-13 07:03:20,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:03:20,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:03:20,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:03:20,367 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 07:03:20,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:03:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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 07:03:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:03:20,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:20,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:03:20,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2029217, now seen corresponding path program 1 times [2021-10-13 07:03:20,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:03:20,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414949694] [2021-10-13 07:03:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:20,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:03:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:03:20,602 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:03:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:03:20,654 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:03:20,656 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:03:20,658 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:20,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:03:20,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:03:20,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:03:20 BoogieIcfgContainer [2021-10-13 07:03:20,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:03:20,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:03:20,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:03:20,700 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:03:20,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:20" (3/4) ... [2021-10-13 07:03:20,705 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:03:20,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:03:20,711 INFO L168 Benchmark]: Toolchain (without parser) took 1294.23 ms. Allocated memory is still 107.0 MB. Free memory was 64.7 MB in the beginning and 53.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:20,712 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 107.0 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:03:20,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.07 ms. Allocated memory is still 107.0 MB. Free memory was 64.6 MB in the beginning and 81.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:20,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:20,718 INFO L168 Benchmark]: Boogie Preprocessor took 27.28 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:20,719 INFO L168 Benchmark]: RCFGBuilder took 403.89 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 67.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:20,722 INFO L168 Benchmark]: TraceAbstraction took 460.75 ms. Allocated memory is still 107.0 MB. Free memory was 67.0 MB in the beginning and 53.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:20,728 INFO L168 Benchmark]: Witness Printer took 5.95 ms. Allocated memory is still 107.0 MB. Free memory was 53.8 MB in the beginning and 53.2 MB in the end (delta: 601.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:03:20,735 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 107.0 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.07 ms. Allocated memory is still 107.0 MB. Free memory was 64.6 MB in the beginning and 81.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.28 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 403.89 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 67.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 460.75 ms. Allocated memory is still 107.0 MB. Free memory was 67.0 MB in the beginning and 53.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.95 ms. Allocated memory is still 107.0 MB. Free memory was 53.8 MB in the beginning and 53.2 MB in the end (delta: 601.2 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: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L18] yn += ui [L19] return yn; [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [yn=49] [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND TRUE !(cond) VAL [yn=51] [L8] reach_error() VAL [yn=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 324.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 27.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: 8.1ms SsaConstructionTime, 50.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 07:03:20,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/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 07:03:23,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:03:23,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:03:23,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:03:23,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:03:23,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:03:23,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:03:23,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:03:23,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:03:23,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:03:23,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:03:23,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:03:23,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:03:23,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:03:23,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:03:23,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:03:23,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:03:23,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:03:23,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:03:23,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:03:23,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:03:23,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:03:23,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:03:23,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:03:23,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:03:23,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:03:23,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:03:23,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:03:23,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:03:23,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:03:23,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:03:23,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:03:23,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:03:23,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:03:23,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:03:23,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:03:23,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:03:23,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:03:23,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:03:23,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:03:23,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:03:23,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:03:23,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:03:23,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:03:23,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:03:23,773 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:03:23,773 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:03:23,774 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:03:23,774 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:03:23,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:03:23,774 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:03:23,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:03:23,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:03:23,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:03:23,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:03:23,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:03:23,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:03:23,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:03:23,779 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:03:23,779 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:03:23,779 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:03:23,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:03:23,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:03:23,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:03:23,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:03:23,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:03:23,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:03:23,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:03:23,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:23,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:03:23,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:03:23,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:03:23,782 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:03:23,782 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:03:23,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:03:23,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:03:23,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:03:23,783 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_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c464086249e43e194470df21028d8e5ac1a606 [2021-10-13 07:03:24,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:03:24,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:03:24,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:03:24,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:03:24,302 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:03:24,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/water_pid.c [2021-10-13 07:03:24,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/a8926ca2a/6d57d5647ef14f06ba1cfc8b9114232f/FLAG13bd6548b [2021-10-13 07:03:25,050 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:03:25,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/sv-benchmarks/c/float-benchs/water_pid.c [2021-10-13 07:03:25,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/a8926ca2a/6d57d5647ef14f06ba1cfc8b9114232f/FLAG13bd6548b [2021-10-13 07:03:25,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/data/a8926ca2a/6d57d5647ef14f06ba1cfc8b9114232f [2021-10-13 07:03:25,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:03:25,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:03:25,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:25,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:03:25,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:03:25,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e71fb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25, skipping insertion in model container [2021-10-13 07:03:25,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:03:25,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:03:25,605 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_5c8e1eef-59dc-40fd-9925-40870a662dcd/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-13 07:03:25,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:25,647 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:03:25,663 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_5c8e1eef-59dc-40fd-9925-40870a662dcd/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-13 07:03:25,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:25,706 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:03:25,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25 WrapperNode [2021-10-13 07:03:25,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:25,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:25,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:03:25,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:03:25,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:25,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:03:25,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:03:25,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:03:25,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:03:25,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:03:25,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:03:25,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:03:25,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (1/1) ... [2021-10-13 07:03:25,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:03:25,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:03:25,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:03:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:03:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:03:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:03:25,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:03:30,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:03:30,863 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-13 07:03:30,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:30 BoogieIcfgContainer [2021-10-13 07:03:30,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:03:30,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:03:30,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:03:30,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:03:30,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:03:25" (1/3) ... [2021-10-13 07:03:30,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3082afb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:30, skipping insertion in model container [2021-10-13 07:03:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:25" (2/3) ... [2021-10-13 07:03:30,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3082afb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:30, skipping insertion in model container [2021-10-13 07:03:30,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:30" (3/3) ... [2021-10-13 07:03:30,877 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-10-13 07:03:30,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:03:30,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:03:30,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:03:30,952 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 07:03:30,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:03:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:03:30,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:30,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:30,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:30,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2021-10-13 07:03:31,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:31,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309837753] [2021-10-13 07:03:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:31,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:31,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:31,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:31,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:03:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:34,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:03:34,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:36,686 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 07:03:36,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:48,383 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-10-13 07:04:03,009 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-10-13 07:04:05,036 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2021-10-13 07:04:05,037 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 07:04:05,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:04:05,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309837753] [2021-10-13 07:04:05,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309837753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:04:05,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:04:05,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 07:04:05,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871615373] [2021-10-13 07:04:05,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:04:05,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:04:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:04:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=41, Unknown=3, NotChecked=26, Total=90 [2021-10-13 07:04:05,079 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 10 states, 10 states have (on average 1.3) 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 07:04:07,625 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (= .cse2 c_~yn~0) (= .cse2 c_~ui~0) (fp.geq .cse0 (fp.neg .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 07:04:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:04:28,894 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-10-13 07:04:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:04:28,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) 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 7 [2021-10-13 07:04:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:04:28,905 INFO L225 Difference]: With dead ends: 37 [2021-10-13 07:04:28,905 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 07:04:28,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16767.0ms TimeCoverageRelationStatistics Valid=28, Invalid=52, Unknown=4, NotChecked=48, Total=132 [2021-10-13 07:04:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 07:04:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2021-10-13 07:04:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 07:04:28,947 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-10-13 07:04:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:04:28,947 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 07:04:28,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) 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 07:04:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 07:04:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:04:28,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:04:28,949 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:04:29,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:04:29,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:04:29,163 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:04:29,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:04:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash 729433995, now seen corresponding path program 1 times [2021-10-13 07:04:29,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:04:29,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132764080] [2021-10-13 07:04:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:29,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:04:29,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:04:29,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:04:29,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:04:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:04:35,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 07:04:35,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:05:23,363 WARN L207 SmtUtils]: Spent 13.34 s on a formula simplification that was a NOOP. DAG size: 29 [2021-10-13 07:06:01,074 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= |c_ULTIMATE.start_y_#res| (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse6))) (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse0)) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse2) .cse4) .cse4)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse4 .cse4) (fp.sub c_currentRoundingMode .cse2 .cse3)))))))))) (= c_ULTIMATE.start_main_~yc~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 07:06:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 07:06:01,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:06:43,113 WARN L207 SmtUtils]: Spent 9.02 s on a formula simplification that was a NOOP. DAG size: 12 [2021-10-13 07:06:57,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:06:57,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132764080] [2021-10-13 07:06:57,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 12499 column 7: push canceled [2021-10-13 07:06:57,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [763048239] [2021-10-13 07:06:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:06:57,110 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:06:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:06:57,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:06:57,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-13 07:07:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:12,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 07:07:12,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:12,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-10-13 07:07:12,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251105289] [2021-10-13 07:07:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:12,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:12,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:12,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:12,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:09:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:09:29,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 07:09:29,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:09:29,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-10-13 07:09:29,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:09:29,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 07:09:29,544 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 07:09:29,544 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 07:09:29,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:09:29,768 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2021-10-13 07:09:29,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2021-10-13 07:09:29,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-10-13 07:09:30,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:09:30,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:09:30,268 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:09:30,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:09:30 BoogieIcfgContainer [2021-10-13 07:09:30,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:09:30,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:09:30,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:09:30,296 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:09:30,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:30" (3/4) ... [2021-10-13 07:09:30,301 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:09:30,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:09:30,304 INFO L168 Benchmark]: Toolchain (without parser) took 364912.78 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.9 MB in the beginning and 47.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:30,309 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:30,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.47 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 45.0 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:30,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.38 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 43.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:30,311 INFO L168 Benchmark]: Boogie Preprocessor took 71.97 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 42.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:30,312 INFO L168 Benchmark]: RCFGBuilder took 5008.84 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 32.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:30,314 INFO L168 Benchmark]: TraceAbstraction took 359426.68 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.9 MB in the beginning and 47.2 MB in the end (delta: -15.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:30,314 INFO L168 Benchmark]: Witness Printer took 5.88 ms. Allocated memory is still 73.4 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:30,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.47 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 45.0 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.38 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 43.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.97 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 42.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 5008.84 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 32.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 359426.68 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.9 MB in the beginning and 47.2 MB in the end (delta: -15.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.88 ms. Allocated memory is still 73.4 MB. Free memory is still 47.2 MB. 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: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L18] yn += ui [L19] return yn; [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND FALSE !(!(cond)) [L39] i++ [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 359324.5ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 11.7ms, AutomataDifference: 23860.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 25 SDslu, 51 SDs, 0 SdLazy, 19 SolverSat, 2 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 16661.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16767.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.1ms SsaConstructionTime, 3653.8ms SatisfiabilityAnalysisTime, 30242.6ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 9 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 07:09:30,541 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 07:09:30,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8e1eef-59dc-40fd-9925-40870a662dcd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...