/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:25:32,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:25:32,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:25:32,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:25:32,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:25:32,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:25:32,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:25:32,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:25:32,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:25:32,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:25:32,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:25:32,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:25:32,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:25:32,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:25:32,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:25:32,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:25:32,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:25:32,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:25:32,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:25:32,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:25:32,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:25:32,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:25:32,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:25:32,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:25:32,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:25:32,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:25:32,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:25:32,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:25:32,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:25:32,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:25:32,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:25:32,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:25:33,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:25:33,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:25:33,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:25:33,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:25:33,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:25:33,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:25:33,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:25:33,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:25:33,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:25:33,013 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 21:25:33,033 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:25:33,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:25:33,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:25:33,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:25:33,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:25:33,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:25:33,035 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:25:33,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:25:33,035 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:25:33,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:25:33,035 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:25:33,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:25:33,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:25:33,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:25:33,036 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:25:33,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:25:33,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:25:33,036 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:25:33,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:25:33,037 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:25:33,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:25:33,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:25:33,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:25:33,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:25:33,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:25:33,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:25:33,038 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:25:33,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:25:33,038 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:25:33,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:25:33,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:25:33,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:25:33,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:25:33,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:25:33,039 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:25:33,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:25:33,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:25:33,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:25:33,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:25:33,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:25:33,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:25:33,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:25:33,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:25:33,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:25:33,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:25:33,279 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:25:33,280 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:25:33,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1131b.c [2023-04-02 21:25:34,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:25:34,654 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:25:34,655 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1131b.c [2023-04-02 21:25:34,661 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b455baca/f532d42dac4845b596713b90707330f8/FLAG849b50d70 [2023-04-02 21:25:34,675 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b455baca/f532d42dac4845b596713b90707330f8 [2023-04-02 21:25:34,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:25:34,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:25:34,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:25:34,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:25:34,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:25:34,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2ec257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34, skipping insertion in model container [2023-04-02 21:25:34,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:25:34,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:25:34,882 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_1131b.c[2947,2960] [2023-04-02 21:25:34,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:25:34,893 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:25:34,917 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_1131b.c[2947,2960] [2023-04-02 21:25:34,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:25:34,927 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:25:34,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34 WrapperNode [2023-04-02 21:25:34,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:25:34,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:25:34,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:25:34,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:25:34,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:25:34,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:25:34,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:25:34,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:25:34,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (1/1) ... [2023-04-02 21:25:34,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:25:34,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:25:35,009 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 21:25:35,022 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 21:25:35,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:25:35,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:25:35,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:25:35,057 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2023-04-02 21:25:35,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2023-04-02 21:25:35,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:25:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:25:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:25:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:25:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:25:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-02 21:25:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2023-04-02 21:25:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:25:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:25:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:25:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-04-02 21:25:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:25:35,133 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:25:35,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:25:35,641 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:25:35,805 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:25:35,806 INFO L302 CfgBuilder]: Removed 14 assume(true) statements. [2023-04-02 21:25:35,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:25:35 BoogieIcfgContainer [2023-04-02 21:25:35,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:25:35,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:25:35,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:25:35,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:25:35,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:25:34" (1/3) ... [2023-04-02 21:25:35,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76036906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:25:35, skipping insertion in model container [2023-04-02 21:25:35,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:34" (2/3) ... [2023-04-02 21:25:35,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76036906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:25:35, skipping insertion in model container [2023-04-02 21:25:35,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:25:35" (3/3) ... [2023-04-02 21:25:35,818 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2023-04-02 21:25:35,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:25:35,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:25:35,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:25:35,887 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;@5694fe84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:25:35,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:25:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 43 states have (on average 1.627906976744186) internal successors, (70), 44 states have internal predecessors, (70), 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 21:25:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-02 21:25:35,896 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:25:35,897 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, 1] [2023-04-02 21:25:35,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:25:35,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:25:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash -959510369, now seen corresponding path program 1 times [2023-04-02 21:25:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:25:35,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142967883] [2023-04-02 21:25:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:25:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:25:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:25:36,105 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 21:25:36,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:25:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142967883] [2023-04-02 21:25:36,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142967883] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:25:36,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:25:36,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 21:25:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763365177] [2023-04-02 21:25:36,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:25:36,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 21:25:36,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:25:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 21:25:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:25:36,153 INFO L87 Difference]: Start difference. First operand has 53 states, 43 states have (on average 1.627906976744186) internal successors, (70), 44 states have internal predecessors, (70), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 21:25:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:25:36,220 INFO L93 Difference]: Finished difference Result 99 states and 150 transitions. [2023-04-02 21:25:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 21:25:36,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 23 [2023-04-02 21:25:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:25:36,230 INFO L225 Difference]: With dead ends: 99 [2023-04-02 21:25:36,230 INFO L226 Difference]: Without dead ends: 48 [2023-04-02 21:25:36,234 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 21:25:36,240 INFO L413 NwaCegarLoop]: 52 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, 52 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 21:25:36,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:25:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-04-02 21:25:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-04-02 21:25:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 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 21:25:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2023-04-02 21:25:36,272 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 23 [2023-04-02 21:25:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:25:36,273 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2023-04-02 21:25:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 21:25:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2023-04-02 21:25:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 21:25:36,274 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:25:36,274 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, 1, 1, 1, 1] [2023-04-02 21:25:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:25:36,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:25:36,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:25:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash 543015899, now seen corresponding path program 1 times [2023-04-02 21:25:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:25:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084464261] [2023-04-02 21:25:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:25:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:25:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:25:36,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:25:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:25:36,465 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:25:36,465 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:25:36,467 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:25:36,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:25:36,471 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 21:25:36,475 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:25:36,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:25:36 BoogieIcfgContainer [2023-04-02 21:25:36,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:25:36,511 INFO L158 Benchmark]: Toolchain (without parser) took 1832.03ms. Allocated memory is still 259.0MB. Free memory was 211.6MB in the beginning and 181.8MB in the end (delta: 29.8MB). Peak memory consumption was 30.6MB. Max. memory is 8.0GB. [2023-04-02 21:25:36,511 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:25:36,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.45ms. Allocated memory is still 259.0MB. Free memory was 211.3MB in the beginning and 199.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 21:25:36,515 INFO L158 Benchmark]: Boogie Preprocessor took 42.92ms. Allocated memory is still 259.0MB. Free memory was 199.0MB in the beginning and 196.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 21:25:36,515 INFO L158 Benchmark]: RCFGBuilder took 837.96ms. Allocated memory is still 259.0MB. Free memory was 196.6MB in the beginning and 222.2MB in the end (delta: -25.5MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. [2023-04-02 21:25:36,518 INFO L158 Benchmark]: TraceAbstraction took 697.68ms. Allocated memory is still 259.0MB. Free memory was 221.6MB in the beginning and 181.8MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-04-02 21:25:36,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.45ms. Allocated memory is still 259.0MB. Free memory was 211.3MB in the beginning and 199.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.92ms. Allocated memory is still 259.0MB. Free memory was 199.0MB in the beginning and 196.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 837.96ms. Allocated memory is still 259.0MB. Free memory was 196.6MB in the beginning and 222.2MB in the end (delta: -25.5MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. * TraceAbstraction took 697.68ms. Allocated memory is still 259.0MB. Free memory was 221.6MB in the beginning and 181.8MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. 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: 137]: 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 136, overapproximation of bitwiseOr at line 33, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; VAL [Zero_fmod={4:0}, one_fmod=1, x=4294967302] [L131] CALL isfinite_float(x) VAL [Zero_fmod={4:0}, \old(x)=4294967302, one_fmod=1] [L111] __int32_t ix; VAL [Zero_fmod={4:0}, \old(x)=4294967302, one_fmod=1, x=4294967302] [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) VAL [Zero_fmod={4:0}, isfinite_float(x)=1, one_fmod=1, x=4294967302] [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) VAL [Zero_fmod={4:0}, \old(x)=4294967302, \old(y)=4294967304, one_fmod=1] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [Zero_fmod={4:0}, \old(x)=4294967302, \old(y)=4294967304, one_fmod=1, x=4294967302, y=4294967304] [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)=4294967302, \old(y)=4294967304, hx=0, hy=2139095041, one_fmod=1, sx=0, x=4294967302, y=4294967304] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [Zero_fmod={4:0}, \old(x)=4294967302, \old(y)=4294967304, hx=0, hy=2139095041, one_fmod=1, sx=0, x=4294967302, y=4294967304] [L133] RET, EXPR fmod_float(x, y) VAL [Zero_fmod={4:0}, fmod_float(x, y)=4294967303, one_fmod=1, x=4294967302, y=4294967304] [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x VAL [Zero_fmod={4:0}, one_fmod=1, res=4294967303, x=4294967302, y=4294967304] [L137] reach_error() VAL [Zero_fmod={4:0}, one_fmod=1, res=4294967303, x=4294967302, y=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 52 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, 52 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=53occurred 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, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 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 21:25:36,543 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...