/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_1271b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:25:40,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:25:40,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:25:40,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:25:40,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:25:40,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:25:40,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:25:40,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:25:40,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:25:40,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:25:40,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:25:40,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:25:40,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:25:40,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:25:40,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:25:40,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:25:40,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:25:40,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:25:40,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:25:40,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:25:40,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:25:40,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:25:40,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:25:40,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:25:40,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:25:40,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:25:40,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:25:40,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:25:40,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:25:40,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:25:40,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:25:40,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:25:40,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:25:40,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:25:40,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:25:40,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:25:40,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:25:40,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:25:40,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:25:40,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:25:40,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:25:40,577 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 21:25:40,608 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:25:40,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:25:40,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:25:40,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:25:40,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:25:40,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:25:40,610 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:25:40,610 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:25:40,611 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:25:40,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:25:40,611 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:25:40,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:25:40,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:25:40,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:25:40,612 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:25:40,612 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:25:40,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:25:40,612 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:25:40,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:25:40,613 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:25:40,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:25:40,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:25:40,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:25:40,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:25:40,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:25:40,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:25:40,614 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:25:40,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:25:40,614 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:25:40,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:25:40,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:25:40,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:25:40,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:25:40,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:25:40,615 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:25:40,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:25:40,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:25:40,615 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:25:40,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:25:40,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:25:40,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:25:40,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:25:40,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:25:40,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:25:40,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:25:40,851 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:25:40,852 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:25:40,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2023-04-02 21:25:41,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:25:42,152 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:25:42,152 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2023-04-02 21:25:42,161 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46bd1e944/b01347e1622c4015b514059775e941c1/FLAGbdbee8069 [2023-04-02 21:25:42,185 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46bd1e944/b01347e1622c4015b514059775e941c1 [2023-04-02 21:25:42,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:25:42,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:25:42,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:25:42,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:25:42,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:25:42,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36886a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42, skipping insertion in model container [2023-04-02 21:25:42,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:25:42,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:25:42,473 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_1271b.c[4883,4896] [2023-04-02 21:25:42,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:25:42,485 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:25:42,574 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_1271b.c[4883,4896] [2023-04-02 21:25:42,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:25:42,587 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:25:42,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42 WrapperNode [2023-04-02 21:25:42,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:25:42,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:25:42,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:25:42,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:25:42,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:25:42,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:25:42,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:25:42,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:25:42,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (1/1) ... [2023-04-02 21:25:42,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:25:42,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:25:42,680 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 21:25:42,682 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 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-04-02 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2023-04-02 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2023-04-02 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2023-04-02 21:25:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 21:25:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:25:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:25:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:25:42,807 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:25:42,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:25:43,214 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:25:43,347 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:25:43,347 INFO L302 CfgBuilder]: Removed 34 assume(true) statements. [2023-04-02 21:25:43,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:25:43 BoogieIcfgContainer [2023-04-02 21:25:43,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:25:43,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:25:43,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:25:43,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:25:43,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:25:42" (1/3) ... [2023-04-02 21:25:43,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b25077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:25:43, skipping insertion in model container [2023-04-02 21:25:43,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:25:42" (2/3) ... [2023-04-02 21:25:43,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b25077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:25:43, skipping insertion in model container [2023-04-02 21:25:43,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:25:43" (3/3) ... [2023-04-02 21:25:43,356 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2023-04-02 21:25:43,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:25:43,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:25:43,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:25:43,421 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;@653e31c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:25:43,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:25:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 79 states have (on average 1.6329113924050633) internal successors, (129), 80 states have internal predecessors, (129), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 21:25:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 21:25:43,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:25:43,432 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] [2023-04-02 21:25:43,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:25:43,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:25:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 704088015, now seen corresponding path program 1 times [2023-04-02 21:25:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:25:43,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870858872] [2023-04-02 21:25:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:25:43,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:25:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:25:43,604 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 21:25:43,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:25:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870858872] [2023-04-02 21:25:43,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870858872] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:25:43,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:25:43,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 21:25:43,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821477474] [2023-04-02 21:25:43,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:25:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 21:25:43,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:25:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 21:25:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:25:43,650 INFO L87 Difference]: Start difference. First operand has 94 states, 79 states have (on average 1.6329113924050633) internal successors, (129), 80 states have internal predecessors, (129), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 21:25:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:25:43,709 INFO L93 Difference]: Finished difference Result 181 states and 282 transitions. [2023-04-02 21:25:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 21:25:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-04-02 21:25:43,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:25:43,721 INFO L225 Difference]: With dead ends: 181 [2023-04-02 21:25:43,721 INFO L226 Difference]: Without dead ends: 89 [2023-04-02 21:25:43,725 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 21:25:43,728 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:25:43,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:25:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-02 21:25:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-04-02 21:25:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 76 states have internal predecessors, (90), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 21:25:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2023-04-02 21:25:43,763 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 30 [2023-04-02 21:25:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:25:43,763 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2023-04-02 21:25:43,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 21:25:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2023-04-02 21:25:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-02 21:25:43,765 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:25:43,765 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, 1, 1, 1, 1, 1] [2023-04-02 21:25:43,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:25:43,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:25:43,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:25:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2012677466, now seen corresponding path program 1 times [2023-04-02 21:25:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:25:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844860503] [2023-04-02 21:25:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:25:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:25:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:25:43,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:25:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:25:43,954 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:25:43,954 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:25:43,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:25:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:25:43,960 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 21:25:43,963 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:25:43,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:25:43 BoogieIcfgContainer [2023-04-02 21:25:43,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:25:43,994 INFO L158 Benchmark]: Toolchain (without parser) took 1805.06ms. Allocated memory is still 255.9MB. Free memory was 204.3MB in the beginning and 176.0MB in the end (delta: 28.3MB). Peak memory consumption was 29.1MB. Max. memory is 8.0GB. [2023-04-02 21:25:43,994 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:25:43,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.50ms. Allocated memory is still 255.9MB. Free memory was 204.1MB in the beginning and 190.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 21:25:43,994 INFO L158 Benchmark]: Boogie Preprocessor took 61.64ms. Allocated memory is still 255.9MB. Free memory was 190.1MB in the beginning and 187.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 21:25:43,995 INFO L158 Benchmark]: RCFGBuilder took 698.42ms. Allocated memory is still 255.9MB. Free memory was 187.6MB in the beginning and 217.4MB in the end (delta: -29.8MB). Peak memory consumption was 36.5MB. Max. memory is 8.0GB. [2023-04-02 21:25:43,995 INFO L158 Benchmark]: TraceAbstraction took 642.13ms. Allocated memory is still 255.9MB. Free memory was 216.4MB in the beginning and 176.0MB in the end (delta: 40.4MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-04-02 21:25:43,996 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 174.1MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 398.50ms. Allocated memory is still 255.9MB. Free memory was 204.1MB in the beginning and 190.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.64ms. Allocated memory is still 255.9MB. Free memory was 190.1MB in the beginning and 187.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 698.42ms. Allocated memory is still 255.9MB. Free memory was 187.6MB in the beginning and 217.4MB in the end (delta: -29.8MB). Peak memory consumption was 36.5MB. Max. memory is 8.0GB. * TraceAbstraction took 642.13ms. Allocated memory is still 255.9MB. Free memory was 216.4MB in the beginning and 176.0MB in the end (delta: 40.4MB). 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: 241]: 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 213, overapproximation of someBinaryArithmeticFLOAToperation at line 120. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L234] float x = __VERIFIER_nondet_float(); [L235] float y = 0.0f / 0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649] [L237] CALL isfinite_float(x) VAL [\old(x)=2147483649, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L217] __int32_t ix; VAL [\old(x)=2147483649, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649] [L219] ieee_float_shape_type gf_u; [L220] gf_u.value = (x) [L221] EXPR gf_u.word [L221] (ix) = gf_u.word [L223] ix &= 0x7fffffff [L224] return (((ix) < 0x7f800000L)); [L237] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649] [L237] COND TRUE isfinite_float(x) [L238] CALL, EXPR __ieee754_hypotf(x, y) VAL [\old(x)=2147483649, \old(y)=2147483649, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=2147483649, \old(y)=2147483649, a=2147483649, b=2147483649, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649, y=2147483649] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [\old(x)=2147483649, \old(y)=2147483649, a=2147483649, b=2147483649, ha=2147483647, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649, y=2147483649] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [\old(x)=2147483649, \old(y)=2147483649, a=2147483649, b=2147483649, ha=2147483647, hb=1895825406, j=2147483647, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649, y=2147483649] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=2147483649, \old(y)=2147483649, a=2147483650, b=2147483653, ha=2147483647, hb=1895825406, j=2147483647, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649, y=2147483649] [L238] RET, EXPR __ieee754_hypotf(x, y) VAL [__ieee754_hypotf(x, y)=2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649, y=2147483649] [L238] float res = __ieee754_hypotf(x, y); [L240] CALL, EXPR isnan_float(res) VAL [\old(x)=2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L213] return x != x; [L240] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, one_sqrt=1, res=2147483648, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649, y=2147483649] [L240] COND TRUE !isnan_float(res) [L241] reach_error() VAL [one_sqrt=1, res=2147483648, tiny_sqrt=1/1000000000000000000000000000000, x=2147483649, y=2147483649] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 96 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, 99 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 99 mSDtfsCounter, 10 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=94occurred 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, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 29 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 21:25:44,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...