./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 6c24879c 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-?-6c24879 [2022-07-12 02:27:45,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:27:45,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:27:45,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:27:45,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:27:45,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:27:45,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:27:45,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:27:45,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:27:45,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:27:45,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:27:45,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:27:45,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:27:45,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:27:45,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:27:45,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:27:45,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:27:45,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:27:45,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:27:45,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:27:45,607 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:27:45,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:27:45,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:27:45,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:27:45,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:27:45,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:27:45,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:27:45,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:27:45,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:27:45,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:27:45,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:27:45,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:27:45,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:27:45,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:27:45,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:27:45,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:27:45,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:27:45,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:27:45,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:27:45,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:27:45,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:27:45,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:27:45,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:27:45,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:27:45,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:27:45,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:27:45,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:27:45,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:27:45,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:27:45,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:27:45,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:27:45,651 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:27:45,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:27:45,652 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:27:45,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:27:45,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:27:45,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:27:45,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:27:45,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:27:45,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:27:45,653 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:27:45,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:27:45,654 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:27:45,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:27:45,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:27:45,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:27:45,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:27:45,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:27:45,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:27:45,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:27:45,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:27:45,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:27:45,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:27:45,656 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:27:45,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:27:45,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:27:45,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2022-07-12 02:27:45,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:27:45,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:27:45,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:27:45,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:27:45,862 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:27:45,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2022-07-12 02:27:45,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336e5e56e/42d0307520104714b5fc7d4020963bde/FLAG7b8607464 [2022-07-12 02:27:46,243 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:27:46,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2022-07-12 02:27:46,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336e5e56e/42d0307520104714b5fc7d4020963bde/FLAG7b8607464 [2022-07-12 02:27:46,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336e5e56e/42d0307520104714b5fc7d4020963bde [2022-07-12 02:27:46,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:27:46,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:27:46,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:27:46,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:27:46,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:27:46,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1351b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46, skipping insertion in model container [2022-07-12 02:27:46,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:27:46,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:27:46,402 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] [2022-07-12 02:27:46,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:27:46,428 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:27:46,438 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] [2022-07-12 02:27:46,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:27:46,450 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:27:46,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46 WrapperNode [2022-07-12 02:27:46,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:27:46,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:27:46,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:27:46,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:27:46,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,474 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2022-07-12 02:27:46,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:27:46,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:27:46,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:27:46,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:27:46,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:27:46,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:27:46,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:27:46,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:27:46,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (1/1) ... [2022-07-12 02:27:46,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:27:46,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:27:46,527 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) [2022-07-12 02:27:46,529 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 [2022-07-12 02:27:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:27:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 02:27:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 02:27:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:27:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:27:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:27:46,607 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:27:46,608 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:27:46,694 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:27:46,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:27:46,701 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 02:27:46,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:27:46 BoogieIcfgContainer [2022-07-12 02:27:46,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:27:46,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:27:46,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:27:46,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:27:46,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:27:46" (1/3) ... [2022-07-12 02:27:46,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127256b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:27:46, skipping insertion in model container [2022-07-12 02:27:46,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:46" (2/3) ... [2022-07-12 02:27:46,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127256b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:27:46, skipping insertion in model container [2022-07-12 02:27:46,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:27:46" (3/3) ... [2022-07-12 02:27:46,709 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2022-07-12 02:27:46,719 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:27:46,720 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:27:46,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:27:46,771 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@667b091d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@21ed14b6 [2022-07-12 02:27:46,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:27:46,780 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) [2022-07-12 02:27:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 02:27:46,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:27:46,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:27:46,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:27:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:27:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1602622425, now seen corresponding path program 1 times [2022-07-12 02:27:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:27:46,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384634235] [2022-07-12 02:27:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:27:46,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:27:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:27:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 02:27:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:27:46,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 02:27:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:27:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 02:27:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:27:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 02:27:46,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 02:27:46,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384634235] [2022-07-12 02:27:46,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384634235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:27:46,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:27:46,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:27:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441849641] [2022-07-12 02:27:46,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:27:46,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:27:46,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 02:27:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:27:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:27:46,999 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) [2022-07-12 02:27:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:27:47,014 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-07-12 02:27:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:27:47,016 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 [2022-07-12 02:27:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:27:47,021 INFO L225 Difference]: With dead ends: 39 [2022-07-12 02:27:47,022 INFO L226 Difference]: Without dead ends: 17 [2022-07-12 02:27:47,024 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 [2022-07-12 02:27:47,027 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 [2022-07-12 02:27:47,034 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] [2022-07-12 02:27:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-12 02:27:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-12 02:27:47,082 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) [2022-07-12 02:27:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-12 02:27:47,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 22 [2022-07-12 02:27:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:27:47,085 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-12 02:27:47,086 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) [2022-07-12 02:27:47,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-12 02:27:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 02:27:47,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:27:47,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:27:47,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:27:47,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:27:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:27:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash 168652453, now seen corresponding path program 1 times [2022-07-12 02:27:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:27:47,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223159415] [2022-07-12 02:27:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:27:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:27:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:27:47,124 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:27:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:27:47,150 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:27:47,151 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:27:47,153 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:27:47,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 02:27:47,159 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:27:47,162 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:27:47,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:27:47 BoogieIcfgContainer [2022-07-12 02:27:47,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:27:47,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:27:47,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:27:47,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:27:47,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:27:46" (3/4) ... [2022-07-12 02:27:47,193 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:27:47,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:27:47,193 INFO L158 Benchmark]: Toolchain (without parser) took 923.34ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 66.2MB in the beginning and 94.9MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:27:47,194 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory was 55.0MB in the beginning and 55.0MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:27:47,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.50ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 66.0MB in the beginning and 102.5MB in the end (delta: -36.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:27:47,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.04ms. Allocated memory is still 127.9MB. Free memory was 102.5MB in the beginning and 101.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:27:47,198 INFO L158 Benchmark]: Boogie Preprocessor took 15.03ms. Allocated memory is still 127.9MB. Free memory was 100.8MB in the beginning and 99.9MB in the end (delta: 884.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:27:47,199 INFO L158 Benchmark]: RCFGBuilder took 212.20ms. Allocated memory is still 127.9MB. Free memory was 99.9MB in the beginning and 90.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:27:47,199 INFO L158 Benchmark]: TraceAbstraction took 485.51ms. Allocated memory is still 127.9MB. Free memory was 90.0MB in the beginning and 95.5MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:27:47,199 INFO L158 Benchmark]: Witness Printer took 3.23ms. Allocated memory is still 127.9MB. Free memory was 95.5MB in the beginning and 94.9MB in the end (delta: 575.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:27:47,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory was 55.0MB in the beginning and 55.0MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.50ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 66.0MB in the beginning and 102.5MB in the end (delta: -36.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.04ms. Allocated memory is still 127.9MB. Free memory was 102.5MB in the beginning and 101.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.03ms. Allocated memory is still 127.9MB. Free memory was 100.8MB in the beginning and 99.9MB in the end (delta: 884.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 212.20ms. Allocated memory is still 127.9MB. Free memory was 99.9MB in the beginning and 90.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 485.51ms. Allocated memory is still 127.9MB. Free memory was 90.0MB in the beginning and 95.5MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.23ms. Allocated memory is still 127.9MB. Free memory was 95.5MB in the beginning and 94.9MB in the end (delta: 575.0kB). 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: 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=52, E=50, 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, 0.1s 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 [2022-07-12 02:27:47,238 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-?-6c24879 [2022-07-12 02:27:48,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:27:48,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:27:49,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:27:49,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:27:49,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:27:49,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:27:49,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:27:49,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:27:49,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:27:49,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:27:49,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:27:49,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:27:49,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:27:49,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:27:49,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:27:49,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:27:49,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:27:49,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:27:49,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:27:49,071 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:27:49,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:27:49,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:27:49,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:27:49,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:27:49,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:27:49,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:27:49,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:27:49,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:27:49,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:27:49,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:27:49,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:27:49,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:27:49,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:27:49,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:27:49,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:27:49,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:27:49,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:27:49,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:27:49,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:27:49,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:27:49,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:27:49,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:27:49,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:27:49,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:27:49,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:27:49,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:27:49,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:27:49,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:27:49,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:27:49,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:27:49,117 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:27:49,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:27:49,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:27:49,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:27:49,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:27:49,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:27:49,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:27:49,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:27:49,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:27:49,119 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:27:49,119 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:27:49,119 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:27:49,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:27:49,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:27:49,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:27:49,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:27:49,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:27:49,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:27:49,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:27:49,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:27:49,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:27:49,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:27:49,121 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:27:49,121 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:27:49,121 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:27:49,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:27:49,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:27:49,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:27:49,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2022-07-12 02:27:49,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:27:49,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:27:49,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:27:49,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:27:49,437 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:27:49,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2022-07-12 02:27:49,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c57042cc/bf22283210fe43159781f8ff23c6d5b7/FLAG43089d37a [2022-07-12 02:27:49,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:27:49,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2022-07-12 02:27:49,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c57042cc/bf22283210fe43159781f8ff23c6d5b7/FLAG43089d37a [2022-07-12 02:27:49,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c57042cc/bf22283210fe43159781f8ff23c6d5b7 [2022-07-12 02:27:49,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:27:49,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:27:49,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:27:49,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:27:49,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:27:49,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:27:49" (1/1) ... [2022-07-12 02:27:49,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68081d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:49, skipping insertion in model container [2022-07-12 02:27:49,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:27:49" (1/1) ... [2022-07-12 02:27:49,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:27:50,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:27:50,172 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] [2022-07-12 02:27:50,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:27:50,197 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:27:50,240 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] [2022-07-12 02:27:50,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:27:50,265 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:27:50,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50 WrapperNode [2022-07-12 02:27:50,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:27:50,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:27:50,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:27:50,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:27:50,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,301 INFO L137 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-07-12 02:27:50,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:27:50,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:27:50,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:27:50,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:27:50,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:27:50,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:27:50,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:27:50,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:27:50,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (1/1) ... [2022-07-12 02:27:50,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:27:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:27:50,376 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) [2022-07-12 02:27:50,394 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 [2022-07-12 02:27:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:27:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:27:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 02:27:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 02:27:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:27:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:27:50,447 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:27:50,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:27:52,854 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:27:52,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:27:52,858 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 02:27:52,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:27:52 BoogieIcfgContainer [2022-07-12 02:27:52,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:27:52,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:27:52,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:27:52,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:27:52,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:27:49" (1/3) ... [2022-07-12 02:27:52,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683bc163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:27:52, skipping insertion in model container [2022-07-12 02:27:52,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:27:50" (2/3) ... [2022-07-12 02:27:52,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683bc163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:27:52, skipping insertion in model container [2022-07-12 02:27:52,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:27:52" (3/3) ... [2022-07-12 02:27:52,868 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2022-07-12 02:27:52,880 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:27:52,881 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:27:52,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:27:52,926 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@336ab857, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e4cf06e [2022-07-12 02:27:52,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:27:52,930 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) [2022-07-12 02:27:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 02:27:52,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:27:52,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:27:52,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:27:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:27:52,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1602622425, now seen corresponding path program 1 times [2022-07-12 02:27:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:27:52,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590777684] [2022-07-12 02:27:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:27:52,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:27:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:27:52,952 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) [2022-07-12 02:27:52,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:27:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:27:54,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 02:27:54,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:27:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 02:27:54,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:27:54,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:27:54,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590777684] [2022-07-12 02:27:54,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590777684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:27:54,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:27:54,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:27:54,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451236062] [2022-07-12 02:27:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:27:54,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:27:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:27:54,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:27:54,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:27:54,230 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) [2022-07-12 02:27:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:27:54,242 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-07-12 02:27:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:27:54,243 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 [2022-07-12 02:27:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:27:54,247 INFO L225 Difference]: With dead ends: 39 [2022-07-12 02:27:54,248 INFO L226 Difference]: Without dead ends: 17 [2022-07-12 02:27:54,250 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 [2022-07-12 02:27:54,252 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 [2022-07-12 02:27:54,253 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] [2022-07-12 02:27:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-12 02:27:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-12 02:27:54,274 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) [2022-07-12 02:27:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-07-12 02:27:54,276 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 22 [2022-07-12 02:27:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:27:54,276 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-07-12 02:27:54,277 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) [2022-07-12 02:27:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-07-12 02:27:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 02:27:54,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:27:54,278 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:27:54,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 02:27:54,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:27:54,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:27:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:27:54,479 INFO L85 PathProgramCache]: Analyzing trace with hash 168652453, now seen corresponding path program 1 times [2022-07-12 02:27:54,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:27:54,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087557209] [2022-07-12 02:27:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:27:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:27:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:27:54,482 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) [2022-07-12 02:27:54,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 02:28:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:28:03,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 02:28:03,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:30:49,930 WARN L833 $PredicateComparison]: unable to prove that (or (and (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse1 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse4 .cse3)))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (and (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~E~0#1| .cse0) (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (and (or (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (exists ((|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53))) (and (not (fp.geq (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse5 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse6 .cse5))) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.leq |ULTIMATE.start_main_~E~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (exists ((|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53))) (and (not (fp.leq (let ((.cse8 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse7 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse8 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse8 .cse7))) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.leq |ULTIMATE.start_main_~E~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))) is different from false [2022-07-12 02:31:21,805 WARN L833 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (exists ((|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53))) (and (not (fp.geq (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse1 .cse0))) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.leq |ULTIMATE.start_main_~E~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (exists ((|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53))) (and (not (fp.leq (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse3 .cse2))) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.leq |ULTIMATE.start_main_~E~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))))) is different from false [2022-07-12 02:31:23,883 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (exists ((|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53))) (and (not (fp.geq (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse1 .cse0))) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.leq |ULTIMATE.start_main_~E~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (exists ((|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (exists ((|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53))) (and (not (fp.leq (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse3 .cse2))) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (fp.leq |ULTIMATE.start_main_~E~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))))) is different from true [2022-07-12 02:31:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 02:31:23,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:31:23,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:31:23,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087557209] [2022-07-12 02:31:23,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087557209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:31:23,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:31:23,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 02:31:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944452232] [2022-07-12 02:31:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:31:23,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 02:31:23,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:31:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 02:31:23,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=60, Unknown=3, NotChecked=34, Total=132 [2022-07-12 02:31:23,887 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-07-12 02:31:27,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 02:31:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:31:27,369 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-07-12 02:31:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 02:31:27,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) Word has length 22 [2022-07-12 02:31:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:31:27,370 INFO L225 Difference]: With dead ends: 27 [2022-07-12 02:31:27,370 INFO L226 Difference]: Without dead ends: 25 [2022-07-12 02:31:27,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=40, Invalid=75, Unknown=3, NotChecked=38, Total=156 [2022-07-12 02:31:27,371 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 02:31:27,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 1 Unknown, 31 Unchecked, 3.3s Time] [2022-07-12 02:31:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-12 02:31:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-12 02:31:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:31:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-07-12 02:31:27,376 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2022-07-12 02:31:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:31:27,376 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-07-12 02:31:27,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-07-12 02:31:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-07-12 02:31:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-12 02:31:27,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:31:27,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:31:27,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-12 02:31:27,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:31:27,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:31:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:31:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash -262310387, now seen corresponding path program 1 times [2022-07-12 02:31:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:31:27,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7451481] [2022-07-12 02:31:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:31:27,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:31:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:31:27,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:31:27,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process