./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/filter2.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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:12:32,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:12:32,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:12:32,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:12:32,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:12:32,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:12:32,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:12:32,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:12:32,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:12:32,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:12:32,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:12:32,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:12:32,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:12:32,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:12:32,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:12:32,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:12:32,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:12:32,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:12:32,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:12:32,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:12:32,308 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:12:32,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:12:32,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:12:32,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:12:32,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:12:32,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:12:32,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:12:32,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:12:32,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:12:32,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:12:32,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:12:32,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:12:32,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:12:32,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:12:32,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:12:32,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:12:32,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:12:32,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:12:32,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:12:32,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:12:32,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:12:32,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:12:32,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:12:32,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:12:32,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:12:32,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:12:32,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:12:32,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:12:32,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:12:32,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:12:32,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:12:32,358 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:12:32,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:12:32,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:12:32,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:12:32,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:12:32,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:12:32,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:12:32,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:12:32,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:12:32,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:12:32,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:12:32,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:12:32,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:12:32,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:12:32,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:12:32,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:12:32,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:12:32,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:12:32,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:12:32,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:12:32,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:12:32,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:12:32,363 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:12:32,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:12:32,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:12:32,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2022-07-21 01:12:32,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:12:32,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:12:32,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:12:32,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:12:32,662 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:12:32,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2022-07-21 01:12:32,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a56c628/373f950f49ab43d38755356eb45f152d/FLAG7067f3f00 [2022-07-21 01:12:33,090 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:12:33,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2022-07-21 01:12:33,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a56c628/373f950f49ab43d38755356eb45f152d/FLAG7067f3f00 [2022-07-21 01:12:33,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a56c628/373f950f49ab43d38755356eb45f152d [2022-07-21 01:12:33,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:12:33,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:12:33,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:12:33,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:12:33,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:12:33,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a39ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33, skipping insertion in model container [2022-07-21 01:12:33,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:12:33,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:12:33,627 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/filter2.c[652,665] [2022-07-21 01:12:33,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:12:33,644 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:12:33,656 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/filter2.c[652,665] [2022-07-21 01:12:33,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:12:33,687 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:12:33,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33 WrapperNode [2022-07-21 01:12:33,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:12:33,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:12:33,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:12:33,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:12:33,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,731 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2022-07-21 01:12:33,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:12:33,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:12:33,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:12:33,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:12:33,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:12:33,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:12:33,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:12:33,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:12:33,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (1/1) ... [2022-07-21 01:12:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:12:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:12:33,805 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) [2022-07-21 01:12:33,827 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 [2022-07-21 01:12:33,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:12:33,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 01:12:33,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 01:12:33,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:12:33,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:12:33,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:12:33,890 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:12:33,891 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:12:34,006 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:12:34,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:12:34,012 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:12:34,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:34 BoogieIcfgContainer [2022-07-21 01:12:34,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:12:34,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:12:34,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:12:34,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:12:34,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:12:33" (1/3) ... [2022-07-21 01:12:34,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cd9479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:34, skipping insertion in model container [2022-07-21 01:12:34,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:33" (2/3) ... [2022-07-21 01:12:34,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cd9479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:34, skipping insertion in model container [2022-07-21 01:12:34,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:34" (3/3) ... [2022-07-21 01:12:34,019 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2022-07-21 01:12:34,029 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:12:34,030 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:12:34,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:12:34,093 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29c0fa08, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@635206d6 [2022-07-21 01:12:34,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:12:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 01:12:34,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 01:12:34,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:12:34,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:12:34,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:12:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:12:34,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1602622425, now seen corresponding path program 1 times [2022-07-21 01:12:34,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:12:34,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937118141] [2022-07-21 01:12:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:12:34,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:12:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:12:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:12:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:12:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 01:12:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:12:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 01:12:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:12:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 01:12:34,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:12:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937118141] [2022-07-21 01:12:34,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937118141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:12:34,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:12:34,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:12:34,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231939775] [2022-07-21 01:12:34,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:12:34,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:12:34,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:12:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:12:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:12:34,287 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 01:12:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:12:34,300 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-07-21 01:12:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:12:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-07-21 01:12:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:12:34,306 INFO L225 Difference]: With dead ends: 39 [2022-07-21 01:12:34,307 INFO L226 Difference]: Without dead ends: 17 [2022-07-21 01:12:34,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:12:34,311 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:12:34,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:12:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-21 01:12:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-21 01:12:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 01:12:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-21 01:12:34,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 22 [2022-07-21 01:12:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:12:34,340 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-21 01:12:34,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 01:12:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-21 01:12:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 01:12:34,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:12:34,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:12:34,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:12:34,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:12:34,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:12:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash 168652453, now seen corresponding path program 1 times [2022-07-21 01:12:34,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:12:34,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373978072] [2022-07-21 01:12:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:12:34,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:12:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:12:34,375 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:12:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:12:34,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:12:34,412 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:12:34,413 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:12:34,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:12:34,418 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:12:34,421 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:12:34,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:12:34 BoogieIcfgContainer [2022-07-21 01:12:34,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:12:34,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:12:34,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:12:34,448 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:12:34,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:34" (3/4) ... [2022-07-21 01:12:34,450 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:12:34,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:12:34,452 INFO L158 Benchmark]: Toolchain (without parser) took 934.43ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.0MB in the beginning and 52.8MB in the end (delta: -12.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:12:34,452 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 43.0MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:12:34,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.52ms. Allocated memory is still 60.8MB. Free memory was 39.7MB in the beginning and 45.2MB in the end (delta: -5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:12:34,455 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.72ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 43.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:12:34,456 INFO L158 Benchmark]: Boogie Preprocessor took 35.82ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 42.7MB in the end (delta: 932.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:12:34,458 INFO L158 Benchmark]: RCFGBuilder took 245.43ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 33.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:12:34,458 INFO L158 Benchmark]: TraceAbstraction took 431.95ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.0MB in the beginning and 53.3MB in the end (delta: -20.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-07-21 01:12:34,458 INFO L158 Benchmark]: Witness Printer took 3.26ms. Allocated memory is still 73.4MB. Free memory was 53.3MB in the beginning and 52.8MB in the end (delta: 432.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:12:34,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 43.0MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.52ms. Allocated memory is still 60.8MB. Free memory was 39.7MB in the beginning and 45.2MB in the end (delta: -5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.72ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 43.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.82ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 42.7MB in the end (delta: 932.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 245.43ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 33.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 431.95ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.0MB in the beginning and 53.3MB in the end (delta: -20.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 3.26ms. Allocated memory is still 73.4MB. Free memory was 53.3MB in the beginning and 52.8MB in the end (delta: 432.8kB). 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: 17]: 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 44, overapproximation of to_real at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] int i; [L25] E = __VERIFIER_nondet_double() [L26] E0 = __VERIFIER_nondet_double() [L27] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L27] RET assume_abort_if_not(E >= 0. && E <= 1.) [L28] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L30] S0 = 0 [L31] S = 0 [L33] i = 0 VAL [i=0] [L33] COND TRUE i <= 1000000 [L34] E1 = E0 [L35] E0 = E [L37] E = __VERIFIER_nondet_double() [L38] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L38] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=50, E=52, E=49, i=0] [L40] S1 = S0 [L41] S0 = S [L42] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L44] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:12:34,497 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 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/filter2.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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:12:36,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:12:36,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:12:36,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:12:36,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:12:36,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:12:36,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:12:36,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:12:36,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:12:36,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:12:36,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:12:36,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:12:36,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:12:36,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:12:36,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:12:36,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:12:36,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:12:36,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:12:36,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:12:36,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:12:36,342 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:12:36,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:12:36,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:12:36,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:12:36,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:12:36,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:12:36,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:12:36,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:12:36,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:12:36,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:12:36,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:12:36,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:12:36,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:12:36,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:12:36,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:12:36,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:12:36,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:12:36,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:12:36,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:12:36,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:12:36,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:12:36,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:12:36,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:12:36,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:12:36,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:12:36,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:12:36,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:12:36,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:12:36,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:12:36,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:12:36,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:12:36,390 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:12:36,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:12:36,391 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:12:36,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:12:36,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:12:36,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:12:36,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:12:36,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:12:36,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:12:36,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:12:36,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:12:36,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:12:36,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:12:36,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:12:36,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:12:36,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:12:36,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:12:36,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:12:36,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:12:36,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:12:36,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:12:36,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:12:36,394 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:12:36,394 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:12:36,394 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:12:36,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:12:36,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:12:36,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:12:36,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2022-07-21 01:12:36,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:12:36,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:12:36,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:12:36,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:12:36,682 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:12:36,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2022-07-21 01:12:36,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1018bc365/c2f8e2fc5f2445e5a6d44fa92b729cea/FLAG49a8eda51 [2022-07-21 01:12:37,084 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:12:37,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2022-07-21 01:12:37,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1018bc365/c2f8e2fc5f2445e5a6d44fa92b729cea/FLAG49a8eda51 [2022-07-21 01:12:37,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1018bc365/c2f8e2fc5f2445e5a6d44fa92b729cea [2022-07-21 01:12:37,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:12:37,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:12:37,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:12:37,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:12:37,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:12:37,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a34426e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37, skipping insertion in model container [2022-07-21 01:12:37,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:12:37,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:12:37,621 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/filter2.c[652,665] [2022-07-21 01:12:37,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:12:37,645 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:12:37,679 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/filter2.c[652,665] [2022-07-21 01:12:37,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:12:37,711 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:12:37,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37 WrapperNode [2022-07-21 01:12:37,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:12:37,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:12:37,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:12:37,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:12:37,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,749 INFO L137 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-07-21 01:12:37,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:12:37,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:12:37,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:12:37,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:12:37,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:12:37,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:12:37,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:12:37,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:12:37,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (1/1) ... [2022-07-21 01:12:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:12:37,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:12:37,816 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) [2022-07-21 01:12:37,822 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 [2022-07-21 01:12:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:12:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:12:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 01:12:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 01:12:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:12:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:12:37,895 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:12:37,897 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:12:40,296 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:12:40,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:12:40,300 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:12:40,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:40 BoogieIcfgContainer [2022-07-21 01:12:40,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:12:40,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:12:40,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:12:40,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:12:40,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:12:37" (1/3) ... [2022-07-21 01:12:40,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218c3dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:40, skipping insertion in model container [2022-07-21 01:12:40,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:37" (2/3) ... [2022-07-21 01:12:40,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218c3dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:40, skipping insertion in model container [2022-07-21 01:12:40,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:40" (3/3) ... [2022-07-21 01:12:40,318 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2022-07-21 01:12:40,332 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:12:40,333 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:12:40,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:12:40,377 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d70ee9c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@143b4f4d [2022-07-21 01:12:40,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:12:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 01:12:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 01:12:40,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:12:40,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:12:40,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:12:40,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:12:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1602622425, now seen corresponding path program 1 times [2022-07-21 01:12:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:12:40,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936584805] [2022-07-21 01:12:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:12:40,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:12:40,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:12:40,431 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) [2022-07-21 01:12:40,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:12:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:12:41,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:12:41,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:12:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 01:12:41,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:12:41,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:12:41,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936584805] [2022-07-21 01:12:41,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936584805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:12:41,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:12:41,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:12:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240567817] [2022-07-21 01:12:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:12:41,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:12:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:12:41,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:12:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:12:41,626 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 01:12:41,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:12:41,638 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-07-21 01:12:41,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:12:41,640 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-07-21 01:12:41,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:12:41,644 INFO L225 Difference]: With dead ends: 39 [2022-07-21 01:12:41,644 INFO L226 Difference]: Without dead ends: 17 [2022-07-21 01:12:41,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:12:41,649 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:12:41,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:12:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-21 01:12:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-21 01:12:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 01:12:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-21 01:12:41,673 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 22 [2022-07-21 01:12:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:12:41,673 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-21 01:12:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 01:12:41,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-21 01:12:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 01:12:41,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:12:41,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:12:41,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:12:41,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:12:41,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:12:41,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:12:41,891 INFO L85 PathProgramCache]: Analyzing trace with hash 168652453, now seen corresponding path program 1 times [2022-07-21 01:12:41,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:12:41,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307099671] [2022-07-21 01:12:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:12:41,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:12:41,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:12:41,894 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) [2022-07-21 01:12:41,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:12:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:12:50,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-21 01:12:50,398 INFO L286 TraceCheckSpWp]: Computing forward predicates...