/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/exp_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:43:41,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:43:41,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:43:41,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:43:41,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:43:41,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:43:41,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:43:41,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:43:41,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:43:41,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:43:41,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:43:41,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:43:41,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:43:41,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:43:41,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:43:41,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:43:41,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:43:41,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:43:41,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:43:41,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:43:41,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:43:41,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:43:41,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:43:41,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:43:41,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 22:43:41,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:43:41,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:43:41,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:43:41,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:43:41,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:43:41,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:43:41,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:43:41,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:43:41,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:43:41,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:43:41,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:43:41,235 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 22:43:41,269 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:43:41,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:43:41,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:43:41,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:43:41,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:43:41,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:43:41,271 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:43:41,271 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:43:41,271 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:43:41,271 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:43:41,272 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:43:41,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:43:41,272 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:43:41,272 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:43:41,272 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:43:41,273 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:43:41,273 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:43:41,273 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:43:41,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:43:41,274 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:43:41,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:43:41,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:43:41,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:43:41,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:43:41,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:43:41,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:43:41,275 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:43:41,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:43:41,275 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:43:41,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:43:41,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:43:41,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:43:41,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:41,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:43:41,276 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:43:41,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:43:41,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:43:41,276 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:43:41,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:43:41,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:43:41,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:43:41,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:43:41,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:43:41,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:43:41,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:43:41,531 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:43:41,532 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:43:41,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/exp_loop.c [2023-03-31 22:43:42,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:43:42,845 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:43:42,846 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/exp_loop.c [2023-03-31 22:43:42,851 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cae3c10fb/30c02be97c1e4d3eb82d0eb2ee4e72e3/FLAG6f5114963 [2023-03-31 22:43:42,867 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cae3c10fb/30c02be97c1e4d3eb82d0eb2ee4e72e3 [2023-03-31 22:43:42,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:43:42,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:43:42,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:42,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:43:42,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:43:42,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:42" (1/1) ... [2023-03-31 22:43:42,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23dfe1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:42, skipping insertion in model container [2023-03-31 22:43:42,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:42" (1/1) ... [2023-03-31 22:43:42,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:43:42,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:43:43,008 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/exp_loop.c[587,600] [2023-03-31 22:43:43,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:43,031 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:43:43,040 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/exp_loop.c[587,600] [2023-03-31 22:43:43,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:43,058 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:43:43,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43 WrapperNode [2023-03-31 22:43:43,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:43,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:43:43,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:43:43,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:43:43,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:43:43,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:43:43,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:43:43,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:43:43,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (1/1) ... [2023-03-31 22:43:43,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:43:43,109 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 22:43:43,111 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 22:43:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:43:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:43:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:43:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:43:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 22:43:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure FABS [2023-03-31 22:43:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure FREXP [2023-03-31 22:43:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure LDEXP [2023-03-31 22:43:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure FABS [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure FREXP [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:43:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure LDEXP [2023-03-31 22:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 22:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:43:43,223 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:43:43,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:43:43,349 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:43:43,380 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:43:43,380 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-03-31 22:43:43,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:43 BoogieIcfgContainer [2023-03-31 22:43:43,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:43:43,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:43:43,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:43:43,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:43:43,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:43:42" (1/3) ... [2023-03-31 22:43:43,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c7cc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:43, skipping insertion in model container [2023-03-31 22:43:43,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:43" (2/3) ... [2023-03-31 22:43:43,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c7cc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:43, skipping insertion in model container [2023-03-31 22:43:43,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:43" (3/3) ... [2023-03-31 22:43:43,389 INFO L112 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2023-03-31 22:43:43,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:43:43,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:43:43,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:43:43,474 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;@121cb500, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:43:43,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:43:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 22:43:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 22:43:43,484 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:43,484 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, 1, 1, 1, 1] [2023-03-31 22:43:43,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:43,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1552889893, now seen corresponding path program 1 times [2023-03-31 22:43:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890074657] [2023-03-31 22:43:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:43,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:43:43,708 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 22:43:43,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:43:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890074657] [2023-03-31 22:43:43,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890074657] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:43:43,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:43:43,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:43:43,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120369603] [2023-03-31 22:43:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:43:43,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:43:43,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:43:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:43:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:43:43,750 INFO L87 Difference]: Start difference. First operand has 39 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-03-31 22:43:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:43:43,797 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-03-31 22:43:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:43:43,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 30 [2023-03-31 22:43:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:43:43,811 INFO L225 Difference]: With dead ends: 54 [2023-03-31 22:43:43,811 INFO L226 Difference]: Without dead ends: 34 [2023-03-31 22:43:43,813 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 22:43:43,816 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:43:43,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:43:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-03-31 22:43:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-03-31 22:43:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 22:43:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-03-31 22:43:43,845 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 30 [2023-03-31 22:43:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:43:43,845 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-03-31 22:43:43,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-03-31 22:43:43,846 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-03-31 22:43:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 22:43:43,846 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:43,847 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, 1, 1, 1, 1] [2023-03-31 22:43:43,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:43:43,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:43,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash 533825774, now seen corresponding path program 1 times [2023-03-31 22:43:43,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:43,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604639041] [2023-03-31 22:43:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:43,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:43,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:43:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:43,944 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:43:43,944 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:43:43,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:43:43,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:43:43,951 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 22:43:43,955 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:43:43,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:43:43 BoogieIcfgContainer [2023-03-31 22:43:43,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:43:43,978 INFO L158 Benchmark]: Toolchain (without parser) took 1107.11ms. Allocated memory is still 314.6MB. Free memory was 268.2MB in the beginning and 206.9MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-03-31 22:43:43,978 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory was 147.2MB in the beginning and 147.0MB in the end (delta: 155.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:43:43,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.87ms. Allocated memory is still 314.6MB. Free memory was 267.7MB in the beginning and 257.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 22:43:43,979 INFO L158 Benchmark]: Boogie Preprocessor took 25.59ms. Allocated memory is still 314.6MB. Free memory was 257.1MB in the beginning and 255.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 22:43:43,980 INFO L158 Benchmark]: RCFGBuilder took 297.20ms. Allocated memory is still 314.6MB. Free memory was 255.1MB in the beginning and 240.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-03-31 22:43:43,980 INFO L158 Benchmark]: TraceAbstraction took 592.84ms. Allocated memory is still 314.6MB. Free memory was 239.9MB in the beginning and 206.9MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-03-31 22:43:43,982 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 196.1MB. Free memory was 147.2MB in the beginning and 147.0MB in the end (delta: 155.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.87ms. Allocated memory is still 314.6MB. Free memory was 267.7MB in the beginning and 257.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.59ms. Allocated memory is still 314.6MB. Free memory was 257.1MB in the beginning and 255.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 297.20ms. Allocated memory is still 314.6MB. Free memory was 255.1MB in the beginning and 240.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 592.84ms. Allocated memory is still 314.6MB. Free memory was 239.9MB in the beginning and 206.9MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. 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: 14]: 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 80, overapproximation of someBinaryDOUBLEComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 66. Possible FailurePath: [L71] float a, b, c; [L72] int e; [L74] a = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not(a >= 1e-10 && a <= 1e10) VAL [\old(cond)=1] [L12] COND FALSE !(!cond) [L75] RET assume_abort_if_not(a >= 1e-10 && a <= 1e10) VAL [e={5:0}] [L77] CALL, EXPR FREXP(a, &e) VAL [\old(d)=60, e={5:0}] [L25] int x; [L26] float r; VAL [\old(d)=60, d=60, e={5:0}, e={5:0}] [L27] CALL, EXPR FABS(d) VAL [\old(d)=60] [L19] COND FALSE !(d >= 0.f) [L20] return -d; [L27] RET, EXPR FABS(d) VAL [FABS(d)=60, \old(d)=60, d=60, e={5:0}, e={5:0}] [L27] float dd = FABS(d); [L29] COND FALSE !(dd >= 1.f) [L38] x = 0 [L39] r = 0.5f VAL [\old(d)=60, d=60, dd=60, e={5:0}, e={5:0}, r=1/2, x=0] [L40] COND FALSE !(r > dd) [L44] r = r * 2.f VAL [\old(d)=60, d=60, dd=60, e={5:0}, e={5:0}, x=0] [L46] *e = x [L47] return dd / r; [L77] RET, EXPR FREXP(a, &e) VAL [FREXP(a, &e)=58, a=60, e={5:0}] [L77] b = FREXP(a, &e) [L78] EXPR \read(e) VAL [\read(e)=0, a=60, b=58, e={5:0}] [L78] CALL, EXPR LDEXP(b, e/2) VAL [\old(d)=58, \old(e)=0] [L52] float x = 1.; VAL [\old(d)=58, \old(e)=0, d=58, e=0, x=1] [L54] COND TRUE e >= 0 VAL [\old(d)=58, \old(e)=0, d=58, e=0, x=1] [L55] COND FALSE !(e > 0) VAL [\old(d)=58, \old(e)=0, d=58, e=0, x=1] [L66] return d * x; [L78] RET, EXPR LDEXP(b, e/2) VAL [LDEXP(b, e/2)=59, \read(e)=0, a=60, b=58, e={5:0}] [L78] c = LDEXP(b, e/2) [L80] CALL __VERIFIER_assert(c >= 0.f && c <= 1e6) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 41 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, 62 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 33 mSDtfsCounter, 25 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=39occurred 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, 0.1s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 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 22:43:44,005 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...