/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 OctagonDomain -i ../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:25:27,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:25:27,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:25:27,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:25:27,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:25:27,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:25:27,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:25:27,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:25:27,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:25:27,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:25:27,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:25:27,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:25:27,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:25:27,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:25:27,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:25:27,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:25:27,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:25:27,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:25:27,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:25:27,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:25:27,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:25:27,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:25:27,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:25:27,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:25:27,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:25:27,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:25:27,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:25:27,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:25:27,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:25:27,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:25:27,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:25:27,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:25:27,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:25:27,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:25:27,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:25:27,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:25:27,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:25:27,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:25:27,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:25:27,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:25:27,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:25:27,861 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 [2023-04-02 21:25:27,880 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:25:27,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:25:27,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:25:27,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:25:27,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:25:27,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:25:27,881 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:25:27,881 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:25:27,881 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:25:27,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:25:27,881 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:25:27,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:25:27,882 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:25:27,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:25:27,882 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:25:27,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:25:27,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:25:27,882 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:25:27,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:25:27,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:25:27,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:25:27,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:25:27,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:25:27,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:25:27,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:25:28,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:25:28,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:25:28,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:25:28,099 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:25:28,100 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:25:28,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2023-04-02 21:25:29,178 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:25:29,329 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:25:29,330 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2023-04-02 21:25:29,334 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca38480c/2dc58a16bc10457eb9cefc932e3e3227/FLAG56dcce987 [2023-04-02 21:25:29,345 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca38480c/2dc58a16bc10457eb9cefc932e3e3227 [2023-04-02 21:25:29,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:25:29,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:25:29,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:25:29,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:25:29,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:25:29,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b63a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29, skipping insertion in model container [2023-04-02 21:25:29,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:25:29,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:25:29,497 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-newlib/float_req_bl_1121b.c[2700,2713] [2023-04-02 21:25:29,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:25:29,517 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:25:29,538 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-newlib/float_req_bl_1121b.c[2700,2713] [2023-04-02 21:25:29,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:25:29,549 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:25:29,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29 WrapperNode [2023-04-02 21:25:29,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:25:29,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:25:29,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:25:29,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:25:29,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:25:29,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:25:29,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:25:29,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:25:29,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (1/1) ... [2023-04-02 21:25:29,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:25:29,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:25:29,630 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) [2023-04-02 21:25:29,639 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 [2023-04-02 21:25:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:25:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:25:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:25:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2023-04-02 21:25:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2023-04-02 21:25:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:25:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2023-04-02 21:25:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:25:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:25:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:25:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-04-02 21:25:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:25:29,753 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:25:29,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:25:30,162 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:25:30,313 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:25:30,313 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-04-02 21:25:30,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:25:30 BoogieIcfgContainer [2023-04-02 21:25:30,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:25:30,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:25:30,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:25:30,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:25:30,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:25:29" (1/3) ... [2023-04-02 21:25:30,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fa4494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:25:30, skipping insertion in model container [2023-04-02 21:25:30,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:29" (2/3) ... [2023-04-02 21:25:30,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fa4494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:25:30, skipping insertion in model container [2023-04-02 21:25:30,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:25:30" (3/3) ... [2023-04-02 21:25:30,320 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2023-04-02 21:25:30,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:25:30,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:25:30,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:25:30,365 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;@1dd3e3bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:25:30,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:25:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 38 states have (on average 1.631578947368421) internal successors, (62), 39 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 21:25:30,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-02 21:25:30,384 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:25:30,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:25:30,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:25:30,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:25:30,392 INFO L85 PathProgramCache]: Analyzing trace with hash 199288624, now seen corresponding path program 1 times [2023-04-02 21:25:30,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:25:30,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418878826] [2023-04-02 21:25:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:25:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:25:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:25:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:25:30,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:25:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418878826] [2023-04-02 21:25:30,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418878826] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:25:30,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:25:30,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 21:25:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147601587] [2023-04-02 21:25:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:25:30,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 21:25:30,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:25:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 21:25:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:25:30,547 INFO L87 Difference]: Start difference. First operand has 48 states, 38 states have (on average 1.631578947368421) internal successors, (62), 39 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 21:25:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:25:30,600 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2023-04-02 21:25:30,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 21:25:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-04-02 21:25:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:25:30,610 INFO L225 Difference]: With dead ends: 89 [2023-04-02 21:25:30,610 INFO L226 Difference]: Without dead ends: 44 [2023-04-02 21:25:30,612 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 [2023-04-02 21:25:30,614 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:25:30,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:25:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-02 21:25:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-04-02 21:25:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:25:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2023-04-02 21:25:30,646 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 20 [2023-04-02 21:25:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:25:30,647 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2023-04-02 21:25:30,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 21:25:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-04-02 21:25:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 21:25:30,651 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:25:30,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:25:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:25:30,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:25:30,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:25:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 873714803, now seen corresponding path program 1 times [2023-04-02 21:25:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:25:30,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30780755] [2023-04-02 21:25:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:25:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:25:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:25:30,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:25:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:25:30,864 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:25:30,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:25:30,865 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:25:30,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:25:30,869 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 21:25:30,872 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:25:30,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:25:30 BoogieIcfgContainer [2023-04-02 21:25:30,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:25:30,899 INFO L158 Benchmark]: Toolchain (without parser) took 1551.73ms. Allocated memory was 211.8MB in the beginning and 379.6MB in the end (delta: 167.8MB). Free memory was 163.8MB in the beginning and 295.0MB in the end (delta: -131.2MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2023-04-02 21:25:30,900 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 211.8MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:25:30,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.03ms. Allocated memory is still 211.8MB. Free memory was 163.8MB in the beginning and 151.6MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 21:25:30,900 INFO L158 Benchmark]: Boogie Preprocessor took 33.12ms. Allocated memory is still 211.8MB. Free memory was 151.6MB in the beginning and 149.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 21:25:30,901 INFO L158 Benchmark]: RCFGBuilder took 731.83ms. Allocated memory was 211.8MB in the beginning and 379.6MB in the end (delta: 167.8MB). Free memory was 149.1MB in the beginning and 331.7MB in the end (delta: -182.6MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2023-04-02 21:25:30,901 INFO L158 Benchmark]: TraceAbstraction took 582.04ms. Allocated memory is still 379.6MB. Free memory was 331.1MB in the beginning and 295.0MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-04-02 21:25:30,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 211.8MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.03ms. Allocated memory is still 211.8MB. Free memory was 163.8MB in the beginning and 151.6MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.12ms. Allocated memory is still 211.8MB. Free memory was 151.6MB in the beginning and 149.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 731.83ms. Allocated memory was 211.8MB in the beginning and 379.6MB in the end (delta: 167.8MB). Free memory was 149.1MB in the beginning and 331.7MB in the end (delta: -182.6MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. * TraceAbstraction took 582.04ms. Allocated memory is still 379.6MB. Free memory was 331.1MB in the beginning and 295.0MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. 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: 124]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 110, overapproximation of bitwiseOr at line 33, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = -0.0f; VAL [Zero_fmod={4:0}, one_fmod=1, x=2147483655] [L120] CALL, EXPR fmod_float(x, y) VAL [Zero_fmod={4:0}, \old(x)=2147483655, \old(y)=2147483657, one_fmod=1] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [Zero_fmod={4:0}, \old(x)=2147483655, \old(y)=2147483657, one_fmod=1, x=2147483655, y=2147483657] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [Zero_fmod={4:0}, \old(x)=2147483655, \old(y)=2147483657, hx=2139095040, hy=0, one_fmod=1, sx=-2147483648, x=2147483655, y=2147483657] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [Zero_fmod={4:0}, \old(x)=2147483655, \old(y)=2147483657, hx=2139095040, hy=0, one_fmod=1, sx=-2147483648, x=2147483655, y=2147483657] [L120] RET, EXPR fmod_float(x, y) VAL [Zero_fmod={4:0}, fmod_float(x, y)=2147483656, one_fmod=1, x=2147483655, y=2147483657] [L120] float res = fmod_float(x, y); [L123] CALL, EXPR isnan_float(res) VAL [Zero_fmod={4:0}, \old(x)=2147483656, one_fmod=1] [L110] return x != x; [L123] RET, EXPR isnan_float(res) VAL [Zero_fmod={4:0}, isnan_float(res)=0, one_fmod=1, res=2147483656, x=2147483655, y=2147483657] [L123] COND TRUE !isnan_float(res) [L124] reach_error() VAL [Zero_fmod={4:0}, one_fmod=1, res=2147483656, x=2147483655, y=2147483657] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 14 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=48occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 [2023-04-02 21:25:30,928 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...