./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/water_pid.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 07:04:58,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 07:04:58,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 07:04:58,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 07:04:58,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 07:04:58,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 07:04:58,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 07:04:58,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 07:04:58,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 07:04:58,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 07:04:58,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 07:04:58,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 07:04:58,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 07:04:58,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 07:04:58,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 07:04:58,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 07:04:58,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 07:04:58,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 07:04:58,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 07:04:58,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 07:04:58,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 07:04:58,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 07:04:58,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 07:04:58,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 07:04:58,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 07:04:58,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 07:04:58,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 07:04:58,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 07:04:58,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 07:04:58,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 07:04:58,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 07:04:58,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 07:04:58,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 07:04:58,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 07:04:58,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 07:04:58,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 07:04:58,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 07:04:58,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 07:04:58,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 07:04:58,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 07:04:58,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 07:04:58,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 07:04:58,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 07:04:58,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 07:04:58,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 07:04:58,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 07:04:58,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 07:04:58,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 07:04:58,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 07:04:58,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 07:04:58,829 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 07:04:58,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 07:04:58,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 07:04:58,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 07:04:58,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 07:04:58,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 07:04:58,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 07:04:58,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 07:04:58,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 07:04:58,830 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 07:04:58,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 07:04:58,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 07:04:58,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 07:04:58,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 07:04:58,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 07:04:58,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 07:04:58,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:04:58,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 07:04:58,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 07:04:58,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 07:04:58,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 07:04:58,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 07:04:58,832 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 07:04:58,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 07:04:58,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 07:04:58,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 07:04:58,833 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2021-12-17 07:04:59,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 07:04:59,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 07:04:59,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 07:04:59,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 07:04:59,043 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 07:04:59,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/water_pid.c [2021-12-17 07:04:59,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9231a701a/550201d0702049949bd743499a23d5d4/FLAG104a32df6 [2021-12-17 07:04:59,445 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 07:04:59,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2021-12-17 07:04:59,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9231a701a/550201d0702049949bd743499a23d5d4/FLAG104a32df6 [2021-12-17 07:04:59,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9231a701a/550201d0702049949bd743499a23d5d4 [2021-12-17 07:04:59,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 07:04:59,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 07:04:59,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 07:04:59,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 07:04:59,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 07:04:59,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba16d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59, skipping insertion in model container [2021-12-17 07:04:59,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 07:04:59,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 07:04:59,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-12-17 07:04:59,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:04:59,656 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 07:04:59,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-12-17 07:04:59,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:04:59,690 INFO L208 MainTranslator]: Completed translation [2021-12-17 07:04:59,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59 WrapperNode [2021-12-17 07:04:59,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 07:04:59,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 07:04:59,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 07:04:59,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 07:04:59,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,716 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2021-12-17 07:04:59,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 07:04:59,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 07:04:59,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 07:04:59,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 07:04:59,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 07:04:59,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 07:04:59,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 07:04:59,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 07:04:59,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (1/1) ... [2021-12-17 07:04:59,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:04:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 07:04:59,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 07:04:59,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 07:04:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 07:04:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure y [2021-12-17 07:04:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2021-12-17 07:04:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 07:04:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 07:04:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 07:04:59,856 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 07:04:59,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 07:04:59,972 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 07:04:59,975 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 07:04:59,976 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 07:04:59,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:04:59 BoogieIcfgContainer [2021-12-17 07:04:59,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 07:04:59,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 07:04:59,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 07:04:59,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 07:04:59,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:04:59" (1/3) ... [2021-12-17 07:04:59,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c3602c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:04:59, skipping insertion in model container [2021-12-17 07:04:59,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:59" (2/3) ... [2021-12-17 07:04:59,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c3602c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:04:59, skipping insertion in model container [2021-12-17 07:04:59,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:04:59" (3/3) ... [2021-12-17 07:04:59,994 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-12-17 07:04:59,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 07:04:59,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 07:05:00,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 07:05:00,040 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 07:05:00,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 07:05:00,054 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) [2021-12-17 07:05:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-17 07:05:00,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:05:00,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:05:00,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:05:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:05:00,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1533419321, now seen corresponding path program 1 times [2021-12-17 07:05:00,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:05:00,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229190190] [2021-12-17 07:05:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:05:00,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:05:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 07:05:00,162 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 07:05:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 07:05:00,195 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 07:05:00,197 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 07:05:00,197 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 07:05:00,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 07:05:00,203 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-17 07:05:00,205 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 07:05:00,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 07:05:00 BoogieIcfgContainer [2021-12-17 07:05:00,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 07:05:00,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 07:05:00,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 07:05:00,229 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 07:05:00,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:04:59" (3/4) ... [2021-12-17 07:05:00,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 07:05:00,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 07:05:00,233 INFO L158 Benchmark]: Toolchain (without parser) took 770.67ms. Allocated memory is still 109.1MB. Free memory was 73.7MB in the beginning and 56.9MB in the end (delta: 16.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-12-17 07:05:00,234 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 80.8MB in the beginning and 80.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:05:00,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.65ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 84.1MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 07:05:00,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.50ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 82.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:05:00,236 INFO L158 Benchmark]: Boogie Preprocessor took 21.62ms. Allocated memory is still 109.1MB. Free memory was 82.4MB in the beginning and 81.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:05:00,240 INFO L158 Benchmark]: RCFGBuilder took 238.27ms. Allocated memory is still 109.1MB. Free memory was 81.1MB in the beginning and 72.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 07:05:00,240 INFO L158 Benchmark]: TraceAbstraction took 247.48ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 57.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 07:05:00,242 INFO L158 Benchmark]: Witness Printer took 3.84ms. Allocated memory is still 109.1MB. Free memory was 57.4MB in the beginning and 56.9MB in the end (delta: 587.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:05:00,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 80.8MB in the beginning and 80.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.65ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 84.1MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.50ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 82.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.62ms. Allocated memory is still 109.1MB. Free memory was 82.4MB in the beginning and 81.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 238.27ms. Allocated memory is still 109.1MB. Free memory was 81.1MB in the beginning and 72.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 247.48ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 57.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.84ms. Allocated memory is still 109.1MB. Free memory was 57.4MB in the beginning and 56.9MB in the end (delta: 587.0kB). 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 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 VAL [K=1/2, yc=1/2] [L36] CALL, EXPR y(0) VAL [\old(i)=0, \old(yn)=51, yn=51] [L18] yn += ui [L19] return yn; VAL [\old(i)=0, \old(yn)=51, \result=49, i=0, yn=49] [L36] RET, EXPR y(0) VAL [K=1/2, y(0)=49, yc=1/2, yn=49] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [epi=52, i=0, K=1/2, sumej=52, yc=1/2, yi=49, yn=49] [L39] COND TRUE i<120 VAL [epi=52, i=0, K=1/2, sumej=52, yc=1/2, yi=49, yn=49] [L40] CALL, EXPR y(i) VAL [\old(i)=0, \old(yn)=49, yn=49] [L18] yn += ui [L19] return yn; VAL [\old(i)=0, \old(yn)=49, \result=50, i=0, yn=50] [L40] RET, EXPR y(i) VAL [epi=52, i=0, K=1/2, sumej=52, y(i)=50, yc=1/2, yi=49, yn=50] [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=50] [L8] reach_error() VAL [\old(cond)=0, cond=0, yn=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-17 07:05:00,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/water_pid.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 07:05:02,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 07:05:02,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 07:05:02,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 07:05:02,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 07:05:02,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 07:05:02,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 07:05:02,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 07:05:02,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 07:05:02,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 07:05:02,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 07:05:02,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 07:05:02,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 07:05:02,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 07:05:02,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 07:05:02,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 07:05:02,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 07:05:02,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 07:05:02,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 07:05:02,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 07:05:02,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 07:05:02,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 07:05:02,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 07:05:02,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 07:05:02,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 07:05:02,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 07:05:02,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 07:05:02,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 07:05:02,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 07:05:02,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 07:05:02,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 07:05:02,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 07:05:02,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 07:05:02,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 07:05:02,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 07:05:02,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 07:05:02,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 07:05:02,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 07:05:02,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 07:05:02,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 07:05:02,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 07:05:02,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 07:05:02,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 07:05:02,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 07:05:02,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 07:05:02,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 07:05:02,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 07:05:02,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 07:05:02,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 07:05:02,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 07:05:02,185 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 07:05:02,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 07:05:02,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 07:05:02,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 07:05:02,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 07:05:02,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 07:05:02,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 07:05:02,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 07:05:02,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 07:05:02,187 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 07:05:02,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 07:05:02,187 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 07:05:02,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 07:05:02,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 07:05:02,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 07:05:02,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 07:05:02,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 07:05:02,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 07:05:02,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:05:02,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 07:05:02,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 07:05:02,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 07:05:02,188 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 07:05:02,189 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 07:05:02,189 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 07:05:02,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 07:05:02,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 07:05:02,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 07:05:02,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 07:05:02,190 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2021-12-17 07:05:02,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 07:05:02,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 07:05:02,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 07:05:02,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 07:05:02,457 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 07:05:02,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/water_pid.c [2021-12-17 07:05:02,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5ef3ac6/43884f5982344f3d97385c6fb6cebac3/FLAGd58d27449 [2021-12-17 07:05:02,893 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 07:05:02,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2021-12-17 07:05:02,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5ef3ac6/43884f5982344f3d97385c6fb6cebac3/FLAGd58d27449 [2021-12-17 07:05:03,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5ef3ac6/43884f5982344f3d97385c6fb6cebac3 [2021-12-17 07:05:03,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 07:05:03,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 07:05:03,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 07:05:03,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 07:05:03,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 07:05:03,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03, skipping insertion in model container [2021-12-17 07:05:03,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 07:05:03,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 07:05:03,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-12-17 07:05:03,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:05:03,468 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 07:05:03,501 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-12-17 07:05:03,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:05:03,523 INFO L208 MainTranslator]: Completed translation [2021-12-17 07:05:03,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03 WrapperNode [2021-12-17 07:05:03,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 07:05:03,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 07:05:03,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 07:05:03,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 07:05:03,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,556 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2021-12-17 07:05:03,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 07:05:03,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 07:05:03,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 07:05:03,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 07:05:03,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 07:05:03,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 07:05:03,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 07:05:03,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 07:05:03,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (1/1) ... [2021-12-17 07:05:03,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:05:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 07:05:03,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 07:05:03,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 07:05:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 07:05:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 07:05:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure y [2021-12-17 07:05:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2021-12-17 07:05:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 07:05:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 07:05:03,751 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 07:05:03,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 07:05:07,023 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 07:05:07,027 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 07:05:07,027 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 07:05:07,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:05:07 BoogieIcfgContainer [2021-12-17 07:05:07,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 07:05:07,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 07:05:07,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 07:05:07,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 07:05:07,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:05:03" (1/3) ... [2021-12-17 07:05:07,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d71045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:05:07, skipping insertion in model container [2021-12-17 07:05:07,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:05:03" (2/3) ... [2021-12-17 07:05:07,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d71045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:05:07, skipping insertion in model container [2021-12-17 07:05:07,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:05:07" (3/3) ... [2021-12-17 07:05:07,033 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-12-17 07:05:07,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 07:05:07,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 07:05:07,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 07:05:07,069 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 07:05:07,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 07:05:07,078 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) [2021-12-17 07:05:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-17 07:05:07,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:05:07,081 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:05:07,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:05:07,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:05:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1533419321, now seen corresponding path program 1 times [2021-12-17 07:05:07,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:05:07,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487827029] [2021-12-17 07:05:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:05:07,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:05:07,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:05:07,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 07:05:07,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 07:05:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:05:09,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-17 07:05:09,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:05:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 07:05:19,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:05:19,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:05:19,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487827029] [2021-12-17 07:05:19,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487827029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:05:19,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:05:19,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 07:05:19,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834181844] [2021-12-17 07:05:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:05:19,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 07:05:19,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:05:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 07:05:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 07:05:19,821 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) [2021-12-17 07:05:26,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:05:31,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:05:33,944 WARN L534 Checker$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 [] [2021-12-17 07:05:35,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:05:38,008 WARN L534 Checker$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 [] [2021-12-17 07:05:40,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:05:44,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:05:46,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:05:48,819 WARN L534 Checker$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 [] [2021-12-17 07:05:50,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 07:05:52,855 WARN L534 Checker$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 [] [2021-12-17 07:05:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:05:52,856 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-12-17 07:05:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 07:05:53,629 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 [2021-12-17 07:05:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:05:53,633 INFO L225 Difference]: With dead ends: 54 [2021-12-17 07:05:53,633 INFO L226 Difference]: Without dead ends: 27 [2021-12-17 07:05:53,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-17 07:05:53,661 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s 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, 30.7s IncrementalHoareTripleChecker+Time [2021-12-17 07:05:53,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 30.7s Time] [2021-12-17 07:05:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-17 07:05:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-12-17 07:05:53,696 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) [2021-12-17 07:05:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-12-17 07:05:53,698 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2021-12-17 07:05:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:05:53,704 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-12-17 07:05:53,705 INFO L471 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) [2021-12-17 07:05:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-12-17 07:05:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 07:05:53,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:05:53,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:05:53,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-17 07:05:53,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:05:53,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:05:53,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:05:53,908 INFO L85 PathProgramCache]: Analyzing trace with hash -888289639, now seen corresponding path program 1 times [2021-12-17 07:05:53,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:05:53,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994613244] [2021-12-17 07:05:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:05:53,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:05:53,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:05:53,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 07:05:53,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 07:05:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:05:57,846 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-17 07:05:57,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:06:49,801 WARN L227 SmtUtils]: Spent 17.84s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 07:08:02,776 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= |c_ULTIMATE.start_main_#t~ret6#1| (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse6))) (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse2 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse0)) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse2) .cse4) .cse4)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse4 .cse4) (fp.sub c_currentRoundingMode .cse2 .cse3)))))))))) (= |c_ULTIMATE.start_main_~yc~0#1| .cse1))) is different from true [2021-12-17 07:08:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2021-12-17 07:08:03,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 07:08:58,781 WARN L227 SmtUtils]: Spent 7.47s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 07:09:38,739 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (.cse1 (fp.neg .cse2))) (or (not (fp.geq .cse0 .cse1)) (not (fp.leq .cse0 .cse2)) (let ((.cse3 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| |c_y_#res|))) (and (fp.geq .cse3 .cse1) (fp.leq .cse3 .cse2))))))) is different from true [2021-12-17 07:11:00,335 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (.cse1 (fp.neg .cse2))) (or (not (fp.geq .cse0 .cse1)) (not (fp.leq .cse0 .cse2)) (let ((.cse3 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0)))) (and (fp.geq .cse3 .cse1) (fp.leq .cse3 .cse2))))))) is different from true [2021-12-17 07:11:23,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:11:23,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994613244] [2021-12-17 07:11:23,522 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 20669 column 7: push canceled [2021-12-17 07:11:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567568180] [2021-12-17 07:11:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:11:23,523 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-17 07:11:23,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-17 07:11:23,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-17 07:11:23,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-12-17 07:11:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:11:41,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-17 07:11:41,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:11:42,012 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-12-17 07:11:42,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421571162] [2021-12-17 07:11:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:11:42,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 07:11:42,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 07:11:42,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 07:11:42,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 07:14:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:14:22,159 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-17 07:14:22,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:14:22,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-12-17 07:14:22,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:14:22,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-17 07:14:22,166 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-12-17 07:14:22,166 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-17 07:14:22,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 07:14:22,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-17 07:14:22,591 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2021-12-17 07:14:22,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2021-12-17 07:14:22,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-12-17 07:14:22,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-17 07:14:22,887 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 07:14:22,889 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 07:14:22,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 07:14:22 BoogieIcfgContainer [2021-12-17 07:14:22,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 07:14:22,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 07:14:22,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 07:14:22,907 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 07:14:22,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:05:07" (3/4) ... [2021-12-17 07:14:22,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 07:14:22,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 07:14:22,910 INFO L158 Benchmark]: Toolchain (without parser) took 559600.41ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 48.4MB in the beginning and 54.5MB in the end (delta: -6.0MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2021-12-17 07:14:22,910 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:14:22,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.73ms. Allocated memory is still 65.0MB. Free memory was 48.3MB in the beginning and 48.2MB in the end (delta: 134.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 07:14:22,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.75ms. Allocated memory is still 65.0MB. Free memory was 48.2MB in the beginning and 46.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:14:22,911 INFO L158 Benchmark]: Boogie Preprocessor took 34.38ms. Allocated memory is still 65.0MB. Free memory was 46.6MB in the beginning and 45.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:14:22,911 INFO L158 Benchmark]: RCFGBuilder took 3435.23ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 35.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 07:14:22,912 INFO L158 Benchmark]: TraceAbstraction took 555877.30ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 35.4MB in the beginning and 55.2MB in the end (delta: -19.8MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-12-17 07:14:22,912 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 83.9MB. Free memory was 55.2MB in the beginning and 54.5MB in the end (delta: 700.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:14:22,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.73ms. Allocated memory is still 65.0MB. Free memory was 48.3MB in the beginning and 48.2MB in the end (delta: 134.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.75ms. Allocated memory is still 65.0MB. Free memory was 48.2MB in the beginning and 46.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.38ms. Allocated memory is still 65.0MB. Free memory was 46.6MB in the beginning and 45.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3435.23ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 35.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 555877.30ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 35.4MB in the beginning and 55.2MB in the end (delta: -19.8MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 83.9MB. Free memory was 55.2MB in the beginning and 54.5MB in the end (delta: 700.9kB). 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: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [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: 555.8s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 30.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 29.1s 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, 7.5s 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, 5.8s SatisfiabilityAnalysisTime, 336.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1538 SizeOfPredicates, 25 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 6/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-17 07:14:23,147 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-12-17 07:14:23,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN