./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:03:46,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:03:46,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:03:46,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:03:46,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:03:46,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:03:46,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:03:46,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:03:46,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:03:46,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:03:46,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:03:46,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:03:46,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:03:46,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:03:46,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:03:46,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:03:46,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:03:46,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:03:46,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:03:46,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:03:46,382 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:03:46,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:03:46,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:03:46,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:03:46,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:03:46,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:03:46,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:03:46,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:03:46,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:03:46,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:03:46,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:03:46,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:03:46,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:03:46,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:03:46,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:03:46,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:03:46,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:03:46,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:03:46,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:03:46,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:03:46,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:03:46,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:03:46,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:03:46,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:03:46,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:03:46,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:03:46,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:03:46,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:03:46,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:03:46,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:03:46,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:03:46,418 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:03:46,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:03:46,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:03:46,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:03:46,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:03:46,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:03:46,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:03:46,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:03:46,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:03:46,419 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:03:46,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:03:46,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:03:46,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:03:46,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:03:46,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:03:46,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:03:46,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:03:46,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:03:46,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:03:46,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:03:46,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:03:46,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:03:46,422 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:03:46,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:03:46,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:03:46,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2022-07-22 14:03:46,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:03:46,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:03:46,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:03:46,663 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:03:46,663 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:03:46,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-22 14:03:46,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac67d384f/8fd49e8e2a224852aac32f05cedf43d6/FLAG12a9fe972 [2022-07-22 14:03:47,079 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:03:47,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-22 14:03:47,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac67d384f/8fd49e8e2a224852aac32f05cedf43d6/FLAG12a9fe972 [2022-07-22 14:03:47,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac67d384f/8fd49e8e2a224852aac32f05cedf43d6 [2022-07-22 14:03:47,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:03:47,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:03:47,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:03:47,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:03:47,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:03:47,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576fa5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47, skipping insertion in model container [2022-07-22 14:03:47,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:03:47,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:03:47,695 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/zonotope_tight.c[577,590] [2022-07-22 14:03:47,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:03:47,716 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:03:47,732 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/zonotope_tight.c[577,590] [2022-07-22 14:03:47,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:03:47,753 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:03:47,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47 WrapperNode [2022-07-22 14:03:47,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:03:47,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:03:47,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:03:47,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:03:47,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,789 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-07-22 14:03:47,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:03:47,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:03:47,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:03:47,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:03:47,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:03:47,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:03:47,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:03:47,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:03:47,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (1/1) ... [2022-07-22 14:03:47,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:03:47,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:03:47,839 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) [2022-07-22 14:03:47,845 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 [2022-07-22 14:03:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:03:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 14:03:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:03:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:03:47,921 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:03:47,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:03:47,991 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:03:47,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:03:47,997 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 14:03:47,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:03:47 BoogieIcfgContainer [2022-07-22 14:03:47,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:03:48,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:03:48,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:03:48,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:03:48,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:03:47" (1/3) ... [2022-07-22 14:03:48,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691e7d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:03:48, skipping insertion in model container [2022-07-22 14:03:48,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:47" (2/3) ... [2022-07-22 14:03:48,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691e7d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:03:48, skipping insertion in model container [2022-07-22 14:03:48,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:03:47" (3/3) ... [2022-07-22 14:03:48,007 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2022-07-22 14:03:48,023 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:03:48,023 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:03:48,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:03:48,071 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@1191eb39, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67bad87e [2022-07-22 14:03:48,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:03:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:03:48,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:03:48,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:03:48,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:03:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:03:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-07-22 14:03:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:03:48,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121127298] [2022-07-22 14:03:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:03:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:03:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:03:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:03:48,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:03:48,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121127298] [2022-07-22 14:03:48,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121127298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:03:48,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:03:48,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:03:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583272042] [2022-07-22 14:03:48,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:03:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 14:03:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:03:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 14:03:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:03:48,246 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:03:48,258 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-22 14:03:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 14:03:48,259 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 14:03:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:03:48,265 INFO L225 Difference]: With dead ends: 23 [2022-07-22 14:03:48,265 INFO L226 Difference]: Without dead ends: 9 [2022-07-22 14:03:48,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:03:48,271 INFO L413 NwaCegarLoop]: 13 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, 13 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 [2022-07-22 14:03:48,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:03:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-22 14:03:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-22 14:03:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-22 14:03:48,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-07-22 14:03:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:03:48,296 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-22 14:03:48,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-22 14:03:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:03:48,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:03:48,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:03:48,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 14:03:48,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:03:48,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:03:48,299 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-07-22 14:03:48,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:03:48,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363286768] [2022-07-22 14:03:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:03:48,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:03:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:03:48,315 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 14:03:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:03:48,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 14:03:48,340 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 14:03:48,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 14:03:48,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 14:03:48,347 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 14:03:48,351 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 14:03:48,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 02:03:48 BoogieIcfgContainer [2022-07-22 14:03:48,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 14:03:48,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 14:03:48,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 14:03:48,378 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 14:03:48,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:03:47" (3/4) ... [2022-07-22 14:03:48,381 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 14:03:48,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 14:03:48,383 INFO L158 Benchmark]: Toolchain (without parser) took 882.43ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.2MB in the beginning and 65.5MB in the end (delta: -22.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:03:48,384 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:03:48,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.11ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.0MB in the beginning and 72.8MB in the end (delta: -29.8MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-07-22 14:03:48,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.80ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 71.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 14:03:48,388 INFO L158 Benchmark]: Boogie Preprocessor took 15.92ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 70.5MB in the end (delta: 946.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:03:48,390 INFO L158 Benchmark]: RCFGBuilder took 190.98ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 61.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 14:03:48,391 INFO L158 Benchmark]: TraceAbstraction took 375.33ms. Allocated memory is still 96.5MB. Free memory was 61.3MB in the beginning and 65.9MB in the end (delta: -4.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:03:48,391 INFO L158 Benchmark]: Witness Printer took 4.96ms. Allocated memory is still 96.5MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:03:48,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.11ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.0MB in the beginning and 72.8MB in the end (delta: -29.8MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.80ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 71.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.92ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 70.5MB in the end (delta: 946.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 190.98ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 61.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 375.33ms. Allocated memory is still 96.5MB. Free memory was 61.3MB in the beginning and 65.9MB in the end (delta: -4.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.96ms. Allocated memory is still 96.5MB. Free memory is still 65.5MB. 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: 14]: 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 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L21] CALL assume_abort_if_not(x >= 0. && x <= 10.) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= 0. && x <= 10.) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L27] CALL __VERIFIER_assert(y >= 0. && y <= 4.) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, 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, 13 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, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-22 14:03:48,444 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/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:03:50,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:03:50,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:03:50,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:03:50,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:03:50,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:03:50,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:03:50,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:03:50,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:03:50,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:03:50,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:03:50,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:03:50,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:03:50,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:03:50,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:03:50,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:03:50,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:03:50,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:03:50,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:03:50,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:03:50,465 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:03:50,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:03:50,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:03:50,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:03:50,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:03:50,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:03:50,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:03:50,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:03:50,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:03:50,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:03:50,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:03:50,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:03:50,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:03:50,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:03:50,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:03:50,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:03:50,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:03:50,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:03:50,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:03:50,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:03:50,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:03:50,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:03:50,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 14:03:50,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:03:50,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:03:50,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:03:50,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:03:50,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:03:50,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:03:50,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:03:50,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:03:50,525 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:03:50,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:03:50,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:03:50,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:03:50,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:03:50,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:03:50,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:03:50,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:03:50,536 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 14:03:50,536 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 14:03:50,536 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 14:03:50,536 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:03:50,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:03:50,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:03:50,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:03:50,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:03:50,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:03:50,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:03:50,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:03:50,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:03:50,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:03:50,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:03:50,539 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 14:03:50,539 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 14:03:50,539 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:03:50,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:03:50,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:03:50,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 14:03:50,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2022-07-22 14:03:50,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:03:50,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:03:50,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:03:50,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:03:50,874 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:03:50,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-22 14:03:50,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c932b21/62396213a2984b6bbe32a661ef52324e/FLAG534d11df4 [2022-07-22 14:03:51,337 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:03:51,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-22 14:03:51,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c932b21/62396213a2984b6bbe32a661ef52324e/FLAG534d11df4 [2022-07-22 14:03:51,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c932b21/62396213a2984b6bbe32a661ef52324e [2022-07-22 14:03:51,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:03:51,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:03:51,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:03:51,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:03:51,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:03:51,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302e01b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51, skipping insertion in model container [2022-07-22 14:03:51,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:03:51,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:03:51,533 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/zonotope_tight.c[577,590] [2022-07-22 14:03:51,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:03:51,563 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:03:51,589 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/zonotope_tight.c[577,590] [2022-07-22 14:03:51,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:03:51,608 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:03:51,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51 WrapperNode [2022-07-22 14:03:51,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:03:51,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:03:51,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:03:51,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:03:51,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,640 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-07-22 14:03:51,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:03:51,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:03:51,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:03:51,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:03:51,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:03:51,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:03:51,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:03:51,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:03:51,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (1/1) ... [2022-07-22 14:03:51,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:03:51,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:03:51,709 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) [2022-07-22 14:03:51,725 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 [2022-07-22 14:03:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:03:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 14:03:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:03:51,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:03:51,802 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:03:51,804 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:03:54,793 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:03:54,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:03:54,798 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 14:03:54,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:03:54 BoogieIcfgContainer [2022-07-22 14:03:54,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:03:54,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:03:54,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:03:54,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:03:54,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:03:51" (1/3) ... [2022-07-22 14:03:54,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@909670a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:03:54, skipping insertion in model container [2022-07-22 14:03:54,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:03:51" (2/3) ... [2022-07-22 14:03:54,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@909670a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:03:54, skipping insertion in model container [2022-07-22 14:03:54,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:03:54" (3/3) ... [2022-07-22 14:03:54,806 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2022-07-22 14:03:54,818 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:03:54,818 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:03:54,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:03:54,877 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@1cb581e5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c6ee781 [2022-07-22 14:03:54,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:03:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:03:54,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:03:54,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:03:54,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:03:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:03:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-07-22 14:03:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:03:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274142329] [2022-07-22 14:03:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:03:54,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:03:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:03:54,913 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) [2022-07-22 14:03:54,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 14:03:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:03:55,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 14:03:55,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:03:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:03:55,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:03:55,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:03:55,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274142329] [2022-07-22 14:03:55,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274142329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:03:55,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:03:55,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:03:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158791624] [2022-07-22 14:03:55,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:03:55,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 14:03:55,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:03:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 14:03:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:03:55,524 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:03:55,534 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-22 14:03:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 14:03:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 14:03:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:03:55,542 INFO L225 Difference]: With dead ends: 23 [2022-07-22 14:03:55,542 INFO L226 Difference]: Without dead ends: 9 [2022-07-22 14:03:55,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:03:55,547 INFO L413 NwaCegarLoop]: 13 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, 13 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 [2022-07-22 14:03:55,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:03:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-22 14:03:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-22 14:03:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-22 14:03:55,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-07-22 14:03:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:03:55,570 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-22 14:03:55,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:03:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-22 14:03:55,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:03:55,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:03:55,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:03:55,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 14:03:55,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:03:55,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:03:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:03:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-07-22 14:03:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:03:55,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257314503] [2022-07-22 14:03:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:03:55,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:03:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:03:55,779 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) [2022-07-22 14:03:55,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 14:03:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:03:56,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 14:03:56,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:04:23,486 WARN L233 SmtUtils]: Spent 7.50s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 14:04:55,778 WARN L833 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (_ +zero 11 53))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) is different from false [2022-07-22 14:05:24,156 WARN L833 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (_ +zero 11 53))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) is different from false [2022-07-22 14:05:26,259 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (_ +zero 11 53))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) is different from true [2022-07-22 14:05:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:05:26,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:05:26,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:05:26,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257314503] [2022-07-22 14:05:26,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257314503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:05:26,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:05:26,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 14:05:26,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085440578] [2022-07-22 14:05:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:05:26,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 14:05:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:05:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 14:05:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=15, Unknown=7, NotChecked=18, Total=56 [2022-07-22 14:05:26,264 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:05:30,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:06:01,701 WARN L233 SmtUtils]: Spent 28.02s on a formula simplification. DAG size of input: 26 DAG size of output: 18 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 14:06:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:06:01,927 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-22 14:06:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 14:06:01,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 14:06:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:06:01,973 INFO L225 Difference]: With dead ends: 13 [2022-07-22 14:06:01,973 INFO L226 Difference]: Without dead ends: 9 [2022-07-22 14:06:01,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6s TimeCoverageRelationStatistics Valid=28, Invalid=27, Unknown=9, NotChecked=26, Total=90 [2022-07-22 14:06:01,974 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 14:06:01,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 19 Unchecked, 2.5s Time] [2022-07-22 14:06:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-22 14:06:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-22 14:06:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:06:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-22 14:06:01,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-22 14:06:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:06:01,977 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-22 14:06:01,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:06:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-22 14:06:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:06:01,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:06:01,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:06:01,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 14:06:02,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:06:02,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:06:02,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:06:02,192 INFO L85 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2022-07-22 14:06:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:06:02,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453681484] [2022-07-22 14:06:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:06:02,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:06:02,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:06:02,195 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) [2022-07-22 14:06:02,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 14:06:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:06:02,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 14:06:02,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:06:36,421 WARN L233 SmtUtils]: Spent 12.98s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 14:06:55,131 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= |c_ULTIMATE.start_main_~y~0#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-22 14:07:52,659 WARN L833 $PredicateComparison]: unable to prove that (or (and (or (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (and (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse2 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq (fp.add roundNearestTiesToEven .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))) is different from false [2022-07-22 14:08:31,971 WARN L833 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)))))) is different from false [2022-07-22 14:08:34,023 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)))))) is different from true [2022-07-22 14:08:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:08:34,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:08:34,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:08:34,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453681484] [2022-07-22 14:08:34,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453681484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:08:34,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:08:34,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 14:08:34,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64557834] [2022-07-22 14:08:34,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:08:34,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 14:08:34,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:08:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 14:08:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=18, Unknown=5, NotChecked=30, Total=72 [2022-07-22 14:08:34,026 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)