./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:26:45,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:26:45,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:26:45,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:26:45,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:26:45,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:26:45,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:26:45,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:26:45,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:26:45,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:26:45,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:26:45,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:26:45,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:26:45,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:26:45,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:26:45,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:26:45,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:26:45,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:26:45,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:26:45,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:26:45,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:26:45,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:26:45,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:26:45,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:26:45,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:26:45,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:26:45,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:26:45,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:26:45,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:26:45,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:26:45,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:26:45,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:26:45,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:26:45,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:26:45,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:26:45,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:26:45,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:26:45,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:26:45,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:26:45,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:26:45,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:26:45,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:26:45,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:26:45,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:26:45,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:26:45,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:26:45,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:26:45,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:26:45,832 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:26:45,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:26:45,832 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:26:45,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:26:45,833 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:26:45,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:26:45,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:26:45,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:26:45,834 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:26:45,834 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:26:45,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:26:45,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:26:45,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:26:45,836 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:26:45,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:26:45,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:26:45,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:26:45,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:26:45,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:26:45,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:26:45,838 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:26:45,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:26:45,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:26:45,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:26:45,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:26:45,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:26:45,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:45,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:26:45,846 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:26:45,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:26:45,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:26:45,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:26:45,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:26:45,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:26:45,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:26:45,847 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_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2022-11-19 07:26:46,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:26:46,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:26:46,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:26:46,108 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:26:46,109 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:26:46,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-benchs/water_pid.c [2022-11-19 07:26:46,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/d6ddb21f2/5f9d0c8e21794e68ac33dfc73027219e/FLAGfae5c3d84 [2022-11-19 07:26:46,635 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:26:46,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/sv-benchmarks/c/float-benchs/water_pid.c [2022-11-19 07:26:46,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/d6ddb21f2/5f9d0c8e21794e68ac33dfc73027219e/FLAGfae5c3d84 [2022-11-19 07:26:47,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/d6ddb21f2/5f9d0c8e21794e68ac33dfc73027219e [2022-11-19 07:26:47,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:26:47,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:26:47,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:47,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:26:47,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:26:47,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35eb35f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47, skipping insertion in model container [2022-11-19 07:26:47,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:26:47,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:26:47,321 WARN L234 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_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2022-11-19 07:26:47,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:47,363 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:26:47,377 WARN L234 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_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2022-11-19 07:26:47,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:47,415 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:26:47,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47 WrapperNode [2022-11-19 07:26:47,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:47,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:47,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:26:47,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:26:47,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,456 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-11-19 07:26:47,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:47,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:26:47,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:26:47,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:26:47,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:26:47,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:26:47,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:26:47,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:26:47,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (1/1) ... [2022-11-19 07:26:47,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:47,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:47,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:26:47,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:26:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:26:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure y [2022-11-19 07:26:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2022-11-19 07:26:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:26:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:26:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:26:47,626 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:26:47,628 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:26:47,745 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:26:47,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:26:47,769 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:26:47,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:47 BoogieIcfgContainer [2022-11-19 07:26:47,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:26:47,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:26:47,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:26:47,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:26:47,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:26:47" (1/3) ... [2022-11-19 07:26:47,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a900a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:47, skipping insertion in model container [2022-11-19 07:26:47,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:47" (2/3) ... [2022-11-19 07:26:47,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a900a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:47, skipping insertion in model container [2022-11-19 07:26:47,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:47" (3/3) ... [2022-11-19 07:26:47,781 INFO L112 eAbstractionObserver]: Analyzing ICFG water_pid.c [2022-11-19 07:26:47,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:26:47,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:26:47,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:26:47,859 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a865ae5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:26:47,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:26:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:26:47,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:26:47,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:47,872 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:26:47,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:47,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1511007053, now seen corresponding path program 1 times [2022-11-19 07:26:47,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:47,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220206940] [2022-11-19 07:26:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:47,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:26:48,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:26:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:26:48,087 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:26:48,093 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:26:48,095 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:26:48,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:26:48,104 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:26:48,109 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:26:48,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:26:48 BoogieIcfgContainer [2022-11-19 07:26:48,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:26:48,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:26:48,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:26:48,158 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:26:48,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:47" (3/4) ... [2022-11-19 07:26:48,163 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:26:48,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:26:48,166 INFO L158 Benchmark]: Toolchain (without parser) took 1146.87ms. Allocated memory is still 111.1MB. Free memory was 65.3MB in the beginning and 56.6MB in the end (delta: 8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:26:48,167 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:26:48,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.40ms. Allocated memory is still 111.1MB. Free memory was 65.1MB in the beginning and 85.6MB in the end (delta: -20.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:26:48,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.49ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 83.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:26:48,171 INFO L158 Benchmark]: Boogie Preprocessor took 23.22ms. Allocated memory is still 111.1MB. Free memory was 83.9MB in the beginning and 82.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:26:48,176 INFO L158 Benchmark]: RCFGBuilder took 289.73ms. Allocated memory is still 111.1MB. Free memory was 82.7MB in the beginning and 71.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:26:48,177 INFO L158 Benchmark]: TraceAbstraction took 377.74ms. Allocated memory is still 111.1MB. Free memory was 71.1MB in the beginning and 56.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:26:48,178 INFO L158 Benchmark]: Witness Printer took 6.21ms. Allocated memory is still 111.1MB. Free memory was 56.9MB in the beginning and 56.6MB in the end (delta: 284.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:26:48,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.40ms. Allocated memory is still 111.1MB. Free memory was 65.1MB in the beginning and 85.6MB in the end (delta: -20.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.49ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 83.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.22ms. Allocated memory is still 111.1MB. Free memory was 83.9MB in the beginning and 82.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 289.73ms. Allocated memory is still 111.1MB. Free memory was 82.7MB in the beginning and 71.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 377.74ms. Allocated memory is still 111.1MB. Free memory was 71.1MB in the beginning and 56.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 6.21ms. Allocated memory is still 111.1MB. Free memory was 56.9MB in the beginning and 56.6MB in the end (delta: 284.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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 14, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41. Possible FailurePath: [L14] NUM ui = 0; [L12] static NUM yn = 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 VAL [K=1/2, yc=1/2] [L36] CALL, EXPR y(0) VAL [\old(i)=0, \old(yn)=55, yn=55] [L18] yn += ui [L19] return yn; [L36] RET, EXPR y(0) VAL [K=1/2, y(0)=54, yc=1/2, yn=54] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [epi=56, i=0, K=1/2, sumej=56, yc=1/2, yi=54, yn=54] [L39] COND TRUE i<120 VAL [epi=56, i=0, K=1/2, sumej=56, yc=1/2, yi=54, yn=54] [L40] CALL, EXPR y(i) VAL [\old(i)=0, \old(yn)=54, yn=54] [L18] yn += ui [L19] return yn; [L40] RET, EXPR y(i) VAL [epi=56, i=0, K=1/2, sumej=56, y(i)=57, yc=1/2, yi=54, yn=57] [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 [L46] CALL __VERIFIER_assert(epi >= -1. && epi <= 1.) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, yn=57] [L8] reach_error() VAL [\old(cond)=0, cond=0, yn=57] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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 [2022-11-19 07:26:48,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:26:50,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:26:50,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:26:50,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:26:50,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:26:50,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:26:50,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:26:50,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:26:50,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:26:50,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:26:50,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:26:50,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:26:50,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:26:50,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:26:50,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:26:50,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:26:50,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:26:50,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:26:50,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:26:50,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:26:50,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:26:50,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:26:50,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:26:50,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:26:50,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:26:50,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:26:50,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:26:50,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:26:50,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:26:50,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:26:50,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:26:50,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:26:50,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:26:50,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:26:50,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:26:50,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:26:50,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:26:50,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:26:50,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:26:50,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:26:50,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:26:50,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:26:50,665 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:26:50,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:26:50,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:26:50,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:26:50,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:26:50,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:26:50,666 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:26:50,667 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:26:50,667 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:26:50,667 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:26:50,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:26:50,667 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:26:50,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:26:50,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:26:50,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:26:50,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:26:50,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:26:50,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:26:50,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:26:50,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:26:50,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:26:50,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:26:50,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:26:50,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:26:50,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:26:50,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:26:50,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:26:50,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:26:50,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:26:50,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:50,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:26:50,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:26:50,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:26:50,672 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:26:50,672 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:26:50,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:26:50,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:26:50,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:26:50,673 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_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2022-11-19 07:26:51,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:26:51,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:26:51,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:26:51,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:26:51,092 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:26:51,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-benchs/water_pid.c [2022-11-19 07:26:51,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/d4ce13ef7/55453ca08fe046aba95fbfbc8ec0013c/FLAG7cfe8ed3e [2022-11-19 07:26:51,691 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:26:51,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/sv-benchmarks/c/float-benchs/water_pid.c [2022-11-19 07:26:51,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/d4ce13ef7/55453ca08fe046aba95fbfbc8ec0013c/FLAG7cfe8ed3e [2022-11-19 07:26:52,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/data/d4ce13ef7/55453ca08fe046aba95fbfbc8ec0013c [2022-11-19 07:26:52,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:26:52,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:26:52,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:52,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:26:52,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:26:52,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656969a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52, skipping insertion in model container [2022-11-19 07:26:52,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:26:52,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:26:52,240 WARN L234 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_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2022-11-19 07:26:52,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:52,275 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:26:52,298 WARN L234 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_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2022-11-19 07:26:52,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:52,338 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:26:52,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52 WrapperNode [2022-11-19 07:26:52,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:52,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:52,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:26:52,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:26:52,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,399 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2022-11-19 07:26:52,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:52,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:26:52,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:26:52,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:26:52,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:26:52,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:26:52,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:26:52,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:26:52,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (1/1) ... [2022-11-19 07:26:52,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:52,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:52,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:26:52,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:26:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:26:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:26:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure y [2022-11-19 07:26:52,537 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2022-11-19 07:26:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:26:52,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:26:52,643 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:26:52,645 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:26:57,167 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:26:57,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:26:57,175 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:26:57,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:57 BoogieIcfgContainer [2022-11-19 07:26:57,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:26:57,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:26:57,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:26:57,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:26:57,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:26:52" (1/3) ... [2022-11-19 07:26:57,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1219de35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:57, skipping insertion in model container [2022-11-19 07:26:57,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:52" (2/3) ... [2022-11-19 07:26:57,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1219de35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:57, skipping insertion in model container [2022-11-19 07:26:57,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:57" (3/3) ... [2022-11-19 07:26:57,187 INFO L112 eAbstractionObserver]: Analyzing ICFG water_pid.c [2022-11-19 07:26:57,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:26:57,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:26:57,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:26:57,323 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@534c4d46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:26:57,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:26:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:26:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:26:57,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:57,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:26:57,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:57,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1533419321, now seen corresponding path program 1 times [2022-11-19 07:26:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:26:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905581502] [2022-11-19 07:26:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:57,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:26:57,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:26:57,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:27:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:00,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:27:00,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:27:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:27:09,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:27:09,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:27:09,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905581502] [2022-11-19 07:27:09,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905581502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:09,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:09,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:27:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539210054] [2022-11-19 07:27:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:09,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:27:09,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:27:09,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:27:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:27:09,881 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:27:17,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:23,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:25,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:27,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:29,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:31,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:36,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:38,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:40,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:42,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:44,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:44,836 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-11-19 07:27:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:27:45,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-19 07:27:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:45,645 INFO L225 Difference]: With dead ends: 54 [2022-11-19 07:27:45,645 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:27:45,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:27:45,651 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:45,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 33.1s Time] [2022-11-19 07:27:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:27:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-19 07:27:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:27:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-19 07:27:45,691 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2022-11-19 07:27:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:45,692 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-19 07:27:45,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:27:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-19 07:27:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:27:45,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:45,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:27:45,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:27:45,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:27:45,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:27:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash -888289639, now seen corresponding path program 1 times [2022-11-19 07:27:45,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:27:45,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732383502] [2022-11-19 07:27:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:45,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:27:45,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:27:45,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:27:45,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:27:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:50,914 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 07:27:50,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:32,276 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse0 (fp.add c_currentRoundingMode .cse1 .cse1)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= c_~yn~0 (fp.add c_currentRoundingMode .cse0 .cse1)) (= c_~ui~0 (fp.mul c_currentRoundingMode .cse2 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| c_~yn~0)) (.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) .cse5) .cse5)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse5 .cse5) (fp.sub c_currentRoundingMode .cse3 .cse4)))))) (= |c_ULTIMATE.start_main_~yc~0#1| .cse2) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-11-19 07:28:34,500 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse0 (fp.add c_currentRoundingMode .cse1 .cse1)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= c_~yn~0 (fp.add c_currentRoundingMode .cse0 .cse1)) (= c_~ui~0 (fp.mul c_currentRoundingMode .cse2 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| c_~yn~0)) (.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) .cse5) .cse5)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse5 .cse5) (fp.sub c_currentRoundingMode .cse3 .cse4)))))) (= |c_ULTIMATE.start_main_~yc~0#1| .cse2) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2022-11-19 07:29:44,835 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-19 07:29:44,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:44,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732383502] [2022-11-19 07:29:44,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2022-11-19 07:29:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1242880091] [2022-11-19 07:29:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:44,838 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:29:44,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:29:44,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:29:44,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-19 07:29:44,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:30:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:00,198 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 07:30:00,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:30:00,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-19 07:30:00,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54264061] [2022-11-19 07:30:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:00,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:00,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:30:00,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:32:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:20,539 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-19 07:32:20,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:32:20,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-19 07:32:20,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:20,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-19 07:32:20,544 ERROR L170 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2022-11-19 07:32:20,545 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-19 07:32:20,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:32:20,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:32:20,976 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2022-11-19 07:32:21,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2022-11-19 07:32:21,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:32:21,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad7b0b6-20ae-4a1f-a099-a00d7bd5a9d1/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:32:21,332 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:32:21,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:32:21,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:32:21 BoogieIcfgContainer [2022-11-19 07:32:21,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:32:21,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:32:21,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:32:21,363 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:32:21,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:57" (3/4) ... [2022-11-19 07:32:21,366 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:32:21,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:32:21,372 INFO L158 Benchmark]: Toolchain (without parser) took 329304.60ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 37.9MB in the beginning and 45.4MB in the end (delta: -7.5MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-19 07:32:21,372 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:32:21,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.26ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 42.1MB in the end (delta: -4.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:32:21,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.09ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:32:21,381 INFO L158 Benchmark]: Boogie Preprocessor took 42.06ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:32:21,382 INFO L158 Benchmark]: RCFGBuilder took 4734.70ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 28.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:32:21,382 INFO L158 Benchmark]: TraceAbstraction took 324181.57ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 45.4MB in the end (delta: -17.3MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2022-11-19 07:32:21,386 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 79.7MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:32:21,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.26ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 42.1MB in the end (delta: -4.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.09ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.06ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4734.70ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 28.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 324181.57ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 45.4MB in the end (delta: -17.3MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 79.7MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: [L14] NUM ui = 0; [L12] static NUM yn = 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 [L36] CALL, EXPR y(0) [L18] yn += ui [L19] return yn; [L36] RET, EXPR y(0) [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 [L39] COND TRUE i<120 [L40] CALL, EXPR y(i) [L18] yn += ui [L19] return yn; [L40] RET, EXPR y(i) [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 [L46] CALL __VERIFIER_assert(epi >= -1. && epi <= 1.) [L8] COND FALSE !(!(cond)) [L46] RET __VERIFIER_assert(epi >= -1. && epi <= 1.) [L39] i++ [L39] COND TRUE i<120 [L40] CALL, EXPR y(i) [L18] yn += ui [L19] return yn; [L40] RET, EXPR y(i) [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 [L46] CALL __VERIFIER_assert(epi >= -1. && epi <= 1.) [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 324.0s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 33.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 31.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 22 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.6s SatisfiabilityAnalysisTime, 123.6s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 8 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN