/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/float-benchs/inv_Newton-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:43:55,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:43:55,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:43:55,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:43:55,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:43:55,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:43:55,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:43:55,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:43:55,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:43:55,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:43:55,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:43:55,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:43:55,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:43:55,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:43:55,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:43:55,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:43:55,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:43:55,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:43:55,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:43:55,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:43:55,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:43:55,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:43:55,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:43:55,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:43:55,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:43:55,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:43:55,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:43:55,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:43:55,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:43:55,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:43:55,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:43:55,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:43:55,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:43:55,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:43:55,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:43:55,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:43:55,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:43:55,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:43:55,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:43:55,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:43:55,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:43:55,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:43:55,740 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:43:55,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:43:55,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:43:55,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:43:55,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:43:55,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:43:55,742 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:43:55,742 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:43:55,742 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:43:55,742 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:43:55,742 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:43:55,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:43:55,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:43:55,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:43:55,743 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:43:55,743 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:43:55,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:43:55,743 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:43:55,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:43:55,744 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:43:55,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:43:55,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:43:55,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:43:55,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:43:55,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:43:55,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:55,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:43:55,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:43:55,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:43:55,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:43:55,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:43:55,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:43:55,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:43:55,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:43:55,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:43:55,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:43:55,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:43:55,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:43:55,951 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:43:55,951 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:43:55,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2023-03-31 22:43:57,151 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:43:57,324 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:43:57,324 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2023-03-31 22:43:57,329 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264e72853/ef910c481837404b81d8ed18067ddc1c/FLAGa37b62a92 [2023-03-31 22:43:57,343 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264e72853/ef910c481837404b81d8ed18067ddc1c [2023-03-31 22:43:57,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:43:57,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:43:57,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:57,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:43:57,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:43:57,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52be83cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57, skipping insertion in model container [2023-03-31 22:43:57,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:43:57,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:43:57,476 WARN L247 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/inv_Newton-1.c[598,611] [2023-03-31 22:43:57,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:57,502 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:43:57,514 WARN L247 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/inv_Newton-1.c[598,611] [2023-03-31 22:43:57,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:57,551 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:43:57,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57 WrapperNode [2023-03-31 22:43:57,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:57,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:43:57,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:43:57,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:43:57,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:43:57,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:43:57,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:43:57,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:43:57,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (1/1) ... [2023-03-31 22:43:57,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:57,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:43:57,634 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) [2023-03-31 22:43:57,661 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 [2023-03-31 22:43:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:43:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:43:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:43:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:43:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 22:43:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2023-03-31 22:43:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:43:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:43:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:43:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:43:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:43:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 22:43:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:43:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:43:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2023-03-31 22:43:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 22:43:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 22:43:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:43:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:43:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 22:43:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:43:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:43:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:43:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:43:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:43:57,751 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:43:57,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:43:57,899 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:43:58,024 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:43:58,025 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 22:43:58,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:58 BoogieIcfgContainer [2023-03-31 22:43:58,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:43:58,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:43:58,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:43:58,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:43:58,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:43:57" (1/3) ... [2023-03-31 22:43:58,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158ca0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:58, skipping insertion in model container [2023-03-31 22:43:58,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:57" (2/3) ... [2023-03-31 22:43:58,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158ca0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:58, skipping insertion in model container [2023-03-31 22:43:58,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:58" (3/3) ... [2023-03-31 22:43:58,034 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2023-03-31 22:43:58,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:43:58,058 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:43:58,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:43:58,114 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2459f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:43:58,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:43:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 22:43:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 22:43:58,126 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:58,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:43:58,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:58,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:58,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1558677390, now seen corresponding path program 1 times [2023-03-31 22:43:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66508766] [2023-03-31 22:43:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:43:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:43:58,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:43:58,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66508766] [2023-03-31 22:43:58,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66508766] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:43:58,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:43:58,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:43:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618727536] [2023-03-31 22:43:58,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:43:58,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:43:58,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:43:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:43:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:43:58,522 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 22:43:58,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:43:58,601 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-03-31 22:43:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:43:58,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-03-31 22:43:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:43:58,616 INFO L225 Difference]: With dead ends: 38 [2023-03-31 22:43:58,617 INFO L226 Difference]: Without dead ends: 19 [2023-03-31 22:43:58,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:43:58,622 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:43:58,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:43:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-03-31 22:43:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-03-31 22:43:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 22:43:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-03-31 22:43:58,648 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2023-03-31 22:43:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:43:58,649 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-03-31 22:43:58,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 22:43:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-03-31 22:43:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 22:43:58,650 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:58,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:43:58,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:43:58,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:58,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1965453526, now seen corresponding path program 1 times [2023-03-31 22:43:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:58,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503009657] [2023-03-31 22:43:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:58,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:43:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:58,828 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:43:58,828 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:43:58,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:43:58,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:43:58,835 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 22:43:58,838 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:43:58,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:43:58 BoogieIcfgContainer [2023-03-31 22:43:58,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:43:58,865 INFO L158 Benchmark]: Toolchain (without parser) took 1518.12ms. Allocated memory is still 299.9MB. Free memory was 257.2MB in the beginning and 258.5MB in the end (delta: -1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:43:58,865 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 135.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:43:58,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.07ms. Allocated memory is still 299.9MB. Free memory was 257.2MB in the beginning and 246.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 22:43:58,868 INFO L158 Benchmark]: Boogie Preprocessor took 46.15ms. Allocated memory is still 299.9MB. Free memory was 246.4MB in the beginning and 244.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 22:43:58,869 INFO L158 Benchmark]: RCFGBuilder took 427.91ms. Allocated memory is still 299.9MB. Free memory was 244.7MB in the beginning and 227.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-03-31 22:43:58,871 INFO L158 Benchmark]: TraceAbstraction took 834.96ms. Allocated memory is still 299.9MB. Free memory was 227.2MB in the beginning and 258.5MB in the end (delta: -31.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:43:58,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 135.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.07ms. Allocated memory is still 299.9MB. Free memory was 257.2MB in the beginning and 246.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.15ms. Allocated memory is still 299.9MB. Free memory was 246.4MB in the beginning and 244.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 427.91ms. Allocated memory is still 299.9MB. Free memory was 244.7MB in the beginning and 227.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 834.96ms. Allocated memory is still 299.9MB. Free memory was 227.2MB in the beginning and 258.5MB in the end (delta: -31.3MB). There was no memory consumed. Max. memory is 8.0GB. * 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: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(a >= 20. && a <= 30.) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) [L49] RET assume_abort_if_not(a >= 20. && a <= 30.) VAL [a=9218868437227405328] [L51] CALL, EXPR inv(a) VAL [\old(A)=9218868437227405328] [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] EXPR A_u.i & 0x7FF0000000000000 [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 VAL [A=9218868437227405328, A_u={4:0}, \old(A)=9218868437227405328, cond=1, exp=-1023, xi=9218868437227405326, xi_u={5:0}] [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi VAL [A=9218868437227405328, A_u={4:0}, \old(A)=9218868437227405328, cond=0, exp=-1023, xi=9218868437227405327, xi_u={5:0}, xsi=9218868437227405327] [L35] COND FALSE !(\read(cond)) [L41] return xi; [L41] return xi; [L41] return xi; [L51] RET, EXPR inv(a) VAL [a=9218868437227405328, inv(a)=9218868437227405327] [L51] r = inv(a) [L53] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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 [2023-03-31 22:43:58,895 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...