/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 EqDomain -i ../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 09:11:15,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 09:11:15,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 09:11:15,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 09:11:15,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 09:11:15,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 09:11:15,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 09:11:15,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 09:11:15,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 09:11:15,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 09:11:15,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 09:11:15,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 09:11:15,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 09:11:15,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 09:11:15,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 09:11:15,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 09:11:15,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 09:11:15,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 09:11:15,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 09:11:15,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 09:11:15,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 09:11:15,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 09:11:15,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 09:11:15,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 09:11:15,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 09:11:15,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 09:11:15,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 09:11:15,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 09:11:15,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 09:11:15,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 09:11:15,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 09:11:15,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 09:11:15,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 09:11:15,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 09:11:15,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 09:11:15,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 09:11:15,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 09:11:15,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 09:11:15,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 09:11:15,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 09:11:15,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 09:11:15,695 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 [2023-04-01 09:11:15,715 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 09:11:15,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 09:11:15,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 09:11:15,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 09:11:15,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 09:11:15,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 09:11:15,717 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 09:11:15,717 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 09:11:15,717 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 09:11:15,717 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 09:11:15,718 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 09:11:15,718 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 09:11:15,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 09:11:15,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 09:11:15,718 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 09:11:15,718 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 09:11:15,718 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 09:11:15,718 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 09:11:15,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 09:11:15,719 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 09:11:15,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 09:11:15,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 09:11:15,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 09:11:15,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 09:11:15,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 09:11:15,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 09:11:15,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 09:11:15,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 09:11:15,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 09:11:15,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 09:11:15,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 09:11:15,898 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 09:11:15,898 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 09:11:15,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2023-04-01 09:11:16,821 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 09:11:17,013 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 09:11:17,013 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2023-04-01 09:11:17,017 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733111a12/9848e07065924c1aac2f3f1439b35b74/FLAG4ff75d41e [2023-04-01 09:11:17,026 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733111a12/9848e07065924c1aac2f3f1439b35b74 [2023-04-01 09:11:17,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 09:11:17,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 09:11:17,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 09:11:17,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 09:11:17,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 09:11:17,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45661710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17, skipping insertion in model container [2023-04-01 09:11:17,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 09:11:17,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 09:11:17,155 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/bitvector/soft_float_1-2a.c.cil.c[755,768] [2023-04-01 09:11:17,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 09:11:17,198 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 09:11:17,205 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/bitvector/soft_float_1-2a.c.cil.c[755,768] [2023-04-01 09:11:17,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 09:11:17,234 INFO L208 MainTranslator]: Completed translation [2023-04-01 09:11:17,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17 WrapperNode [2023-04-01 09:11:17,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 09:11:17,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 09:11:17,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 09:11:17,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 09:11:17,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 09:11:17,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 09:11:17,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 09:11:17,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 09:11:17,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (1/1) ... [2023-04-01 09:11:17,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 09:11:17,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:11:17,301 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) [2023-04-01 09:11:17,306 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 [2023-04-01 09:11:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 09:11:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 09:11:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 09:11:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 09:11:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-04-01 09:11:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2023-04-01 09:11:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2023-04-01 09:11:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 09:11:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 09:11:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 09:11:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 09:11:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 09:11:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 09:11:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 09:11:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 09:11:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 09:11:17,395 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 09:11:17,400 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 09:11:17,766 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 09:11:17,960 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 09:11:17,960 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-01 09:11:17,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:11:17 BoogieIcfgContainer [2023-04-01 09:11:17,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 09:11:17,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 09:11:17,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 09:11:17,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 09:11:17,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:11:17" (1/3) ... [2023-04-01 09:11:17,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fb7aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:11:17, skipping insertion in model container [2023-04-01 09:11:17,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:11:17" (2/3) ... [2023-04-01 09:11:17,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fb7aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:11:17, skipping insertion in model container [2023-04-01 09:11:17,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:11:17" (3/3) ... [2023-04-01 09:11:17,969 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2023-04-01 09:11:17,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 09:11:17,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 09:11:18,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 09:11:18,014 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;@2a59507b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 09:11:18,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 09:11:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 40 states have (on average 1.45) internal successors, (58), 43 states have internal predecessors, (58), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 09:11:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 09:11:18,024 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:18,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 09:11:18,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:18,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1811974539, now seen corresponding path program 1 times [2023-04-01 09:11:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:18,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71960056] [2023-04-01 09:11:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:18,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 09:11:18,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:11:18,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71960056] [2023-04-01 09:11:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71960056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:11:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:11:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 09:11:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521623312] [2023-04-01 09:11:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:11:18,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 09:11:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:18,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 09:11:18,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-01 09:11:18,538 INFO L87 Difference]: Start difference. First operand has 60 states, 40 states have (on average 1.45) internal successors, (58), 43 states have internal predecessors, (58), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 09:11:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:18,754 INFO L93 Difference]: Finished difference Result 140 states and 221 transitions. [2023-04-01 09:11:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 09:11:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-04-01 09:11:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:18,764 INFO L225 Difference]: With dead ends: 140 [2023-04-01 09:11:18,764 INFO L226 Difference]: Without dead ends: 83 [2023-04-01 09:11:18,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-01 09:11:18,771 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:18,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 489 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 09:11:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-04-01 09:11:18,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2023-04-01 09:11:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 44 states have internal predecessors, (55), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2023-04-01 09:11:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2023-04-01 09:11:18,820 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 30 [2023-04-01 09:11:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:18,820 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2023-04-01 09:11:18,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 09:11:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2023-04-01 09:11:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 09:11:18,822 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:18,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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] [2023-04-01 09:11:18,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 09:11:18,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:18,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1307647556, now seen corresponding path program 1 times [2023-04-01 09:11:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:18,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896587927] [2023-04-01 09:11:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:18,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 09:11:19,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:11:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896587927] [2023-04-01 09:11:19,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896587927] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 09:11:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913370829] [2023-04-01 09:11:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:11:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:11:19,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 09:11:19,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 09:11:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:19,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 09:11:19,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 09:11:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 09:11:19,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 09:11:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 09:11:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913370829] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 09:11:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1045829577] [2023-04-01 09:11:19,808 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-01 09:11:19,808 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 09:11:19,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 09:11:19,813 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 09:11:19,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 09:11:19,889 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 09:11:22,751 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 63 for LOIs [2023-04-01 09:11:22,811 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 09:11:25,184 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 98 for LOIs [2023-04-01 09:11:25,187 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 49 for LOIs [2023-04-01 09:11:25,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 09:11:25,282 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 09:11:30,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '581#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 09:11:30,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 09:11:30,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 09:11:30,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 10] total 22 [2023-04-01 09:11:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945781039] [2023-04-01 09:11:30,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 09:11:30,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-01 09:11:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-01 09:11:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1664, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 09:11:30,798 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 22 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 6 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 09:11:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:31,401 INFO L93 Difference]: Finished difference Result 178 states and 254 transitions. [2023-04-01 09:11:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-01 09:11:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 6 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 34 [2023-04-01 09:11:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:31,404 INFO L225 Difference]: With dead ends: 178 [2023-04-01 09:11:31,404 INFO L226 Difference]: Without dead ends: 123 [2023-04-01 09:11:31,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2023-04-01 09:11:31,406 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 83 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:31,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 888 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 09:11:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-04-01 09:11:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 65. [2023-04-01 09:11:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 47 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-04-01 09:11:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2023-04-01 09:11:31,416 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 34 [2023-04-01 09:11:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:31,416 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2023-04-01 09:11:31,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 6 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 09:11:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2023-04-01 09:11:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-01 09:11:31,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:31,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-04-01 09:11:31,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 09:11:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:11:31,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:31,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash -920771218, now seen corresponding path program 1 times [2023-04-01 09:11:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701773453] [2023-04-01 09:11:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 09:11:31,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:11:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701773453] [2023-04-01 09:11:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701773453] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 09:11:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140778259] [2023-04-01 09:11:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:11:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:11:31,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 09:11:31,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 09:11:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:31,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 09:11:31,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 09:11:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 09:11:31,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 09:11:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 09:11:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140778259] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 09:11:32,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [12997145] [2023-04-01 09:11:32,098 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-04-01 09:11:32,098 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 09:11:32,098 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 09:11:32,098 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 09:11:32,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 09:11:32,118 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 09:11:32,339 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 56 for LOIs [2023-04-01 09:11:32,356 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 49 for LOIs [2023-04-01 09:11:32,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 09:11:32,387 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 09:11:33,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [12997145] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:11:33,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 09:11:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [9, 11, 9] total 42 [2023-04-01 09:11:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418953727] [2023-04-01 09:11:33,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:11:33,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 09:11:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 09:11:33,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1556, Unknown=0, NotChecked=0, Total=1722 [2023-04-01 09:11:33,914 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 09:11:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:35,642 INFO L93 Difference]: Finished difference Result 114 states and 160 transitions. [2023-04-01 09:11:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 09:11:35,642 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2023-04-01 09:11:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:35,643 INFO L225 Difference]: With dead ends: 114 [2023-04-01 09:11:35,643 INFO L226 Difference]: Without dead ends: 100 [2023-04-01 09:11:35,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=379, Invalid=3043, Unknown=0, NotChecked=0, Total=3422 [2023-04-01 09:11:35,645 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 172 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:35,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 9 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 09:11:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-01 09:11:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 76. [2023-04-01 09:11:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 54 states have internal predecessors, (66), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (21), 14 states have call predecessors, (21), 13 states have call successors, (21) [2023-04-01 09:11:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2023-04-01 09:11:35,668 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 35 [2023-04-01 09:11:35,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:35,668 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2023-04-01 09:11:35,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 09:11:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2023-04-01 09:11:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-01 09:11:35,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:35,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-04-01 09:11:35,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 09:11:35,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-01 09:11:35,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:35,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1894253335, now seen corresponding path program 1 times [2023-04-01 09:11:35,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:35,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927351403] [2023-04-01 09:11:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 09:11:36,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:11:36,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927351403] [2023-04-01 09:11:36,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927351403] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:11:36,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:11:36,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-01 09:11:36,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200413187] [2023-04-01 09:11:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:11:36,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 09:11:36,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 09:11:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-04-01 09:11:36,243 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-01 09:11:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:36,551 INFO L93 Difference]: Finished difference Result 108 states and 145 transitions. [2023-04-01 09:11:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 09:11:36,551 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2023-04-01 09:11:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:36,552 INFO L225 Difference]: With dead ends: 108 [2023-04-01 09:11:36,552 INFO L226 Difference]: Without dead ends: 89 [2023-04-01 09:11:36,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2023-04-01 09:11:36,553 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 69 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:36,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 838 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 09:11:36,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-01 09:11:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2023-04-01 09:11:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (21), 15 states have call predecessors, (21), 14 states have call successors, (21) [2023-04-01 09:11:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2023-04-01 09:11:36,569 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 36 [2023-04-01 09:11:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:36,570 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2023-04-01 09:11:36,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-01 09:11:36,570 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2023-04-01 09:11:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 09:11:36,572 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:36,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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] [2023-04-01 09:11:36,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 09:11:36,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:36,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1547218538, now seen corresponding path program 1 times [2023-04-01 09:11:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:36,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470312927] [2023-04-01 09:11:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 09:11:36,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:11:36,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470312927] [2023-04-01 09:11:36,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470312927] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 09:11:36,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762073968] [2023-04-01 09:11:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:36,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:11:36,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:11:36,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 09:11:36,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 09:11:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:36,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 09:11:36,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 09:11:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 09:11:36,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 09:11:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 09:11:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762073968] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 09:11:36,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604837270] [2023-04-01 09:11:36,962 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-01 09:11:36,963 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 09:11:36,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 09:11:36,963 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 09:11:36,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 09:11:36,979 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 09:11:37,226 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 59 for LOIs [2023-04-01 09:11:37,242 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 49 for LOIs [2023-04-01 09:11:37,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 09:11:37,357 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 09:11:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1604837270] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:11:39,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 09:11:39,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [9, 11, 9] total 44 [2023-04-01 09:11:39,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013083089] [2023-04-01 09:11:39,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:11:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 09:11:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 09:11:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2023-04-01 09:11:39,091 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 09:11:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:41,214 INFO L93 Difference]: Finished difference Result 125 states and 174 transitions. [2023-04-01 09:11:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 09:11:41,215 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 38 [2023-04-01 09:11:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:41,216 INFO L225 Difference]: With dead ends: 125 [2023-04-01 09:11:41,216 INFO L226 Difference]: Without dead ends: 107 [2023-04-01 09:11:41,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=447, Invalid=3713, Unknown=0, NotChecked=0, Total=4160 [2023-04-01 09:11:41,218 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 217 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:41,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 12 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 09:11:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-04-01 09:11:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2023-04-01 09:11:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 57 states have internal predecessors, (68), 17 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (24), 15 states have call predecessors, (24), 14 states have call successors, (24) [2023-04-01 09:11:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 109 transitions. [2023-04-01 09:11:41,238 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 109 transitions. Word has length 38 [2023-04-01 09:11:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:41,238 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 109 transitions. [2023-04-01 09:11:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 09:11:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 109 transitions. [2023-04-01 09:11:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 09:11:41,240 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:41,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 09:11:41,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 09:11:41,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:11:41,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:41,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:41,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1840485203, now seen corresponding path program 2 times [2023-04-01 09:11:41,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:41,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583948636] [2023-04-01 09:11:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:11:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 09:11:41,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:11:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583948636] [2023-04-01 09:11:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583948636] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:11:41,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:11:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-01 09:11:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147702198] [2023-04-01 09:11:41,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:11:41,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 09:11:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:11:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 09:11:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-04-01 09:11:41,821 INFO L87 Difference]: Start difference. First operand 79 states and 109 transitions. Second operand has 13 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 09:11:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:11:42,111 INFO L93 Difference]: Finished difference Result 128 states and 183 transitions. [2023-04-01 09:11:42,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 09:11:42,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-04-01 09:11:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:11:42,112 INFO L225 Difference]: With dead ends: 128 [2023-04-01 09:11:42,112 INFO L226 Difference]: Without dead ends: 126 [2023-04-01 09:11:42,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-04-01 09:11:42,113 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 57 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 09:11:42,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 730 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 09:11:42,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-04-01 09:11:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 100. [2023-04-01 09:11:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 72 states have internal predecessors, (86), 21 states have call successors, (21), 9 states have call predecessors, (21), 11 states have return successors, (36), 19 states have call predecessors, (36), 18 states have call successors, (36) [2023-04-01 09:11:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 143 transitions. [2023-04-01 09:11:42,133 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 143 transitions. Word has length 38 [2023-04-01 09:11:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:11:42,133 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 143 transitions. [2023-04-01 09:11:42,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 09:11:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2023-04-01 09:11:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 09:11:42,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:11:42,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2023-04-01 09:11:42,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 09:11:42,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:11:42,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:11:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1734124622, now seen corresponding path program 1 times [2023-04-01 09:11:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:11:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33790426] [2023-04-01 09:11:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:11:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:11:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 09:11:42,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 09:11:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 09:11:42,234 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 09:11:42,234 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 09:11:42,235 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 09:11:42,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 09:11:42,238 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-04-01 09:11:42,241 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 09:11:42,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 09:11:42 BoogieIcfgContainer [2023-04-01 09:11:42,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 09:11:42,287 INFO L158 Benchmark]: Toolchain (without parser) took 25258.56ms. Allocated memory was 240.1MB in the beginning and 943.7MB in the end (delta: 703.6MB). Free memory was 200.7MB in the beginning and 617.6MB in the end (delta: -416.9MB). Peak memory consumption was 288.3MB. Max. memory is 8.0GB. [2023-04-01 09:11:42,287 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory was 145.1MB in the beginning and 145.0MB in the end (delta: 130.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 09:11:42,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.23ms. Allocated memory is still 240.1MB. Free memory was 200.2MB in the beginning and 186.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-01 09:11:42,287 INFO L158 Benchmark]: Boogie Preprocessor took 34.13ms. Allocated memory is still 240.1MB. Free memory was 186.6MB in the beginning and 184.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 09:11:42,288 INFO L158 Benchmark]: RCFGBuilder took 692.83ms. Allocated memory is still 240.1MB. Free memory was 184.5MB in the beginning and 190.8MB in the end (delta: -6.3MB). Peak memory consumption was 61.8MB. Max. memory is 8.0GB. [2023-04-01 09:11:42,288 INFO L158 Benchmark]: TraceAbstraction took 24322.30ms. Allocated memory was 240.1MB in the beginning and 943.7MB in the end (delta: 703.6MB). Free memory was 190.3MB in the beginning and 617.6MB in the end (delta: -427.3MB). Peak memory consumption was 276.8MB. Max. memory is 8.0GB. [2023-04-01 09:11:42,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory was 145.1MB in the beginning and 145.0MB in the end (delta: 130.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.23ms. Allocated memory is still 240.1MB. Free memory was 200.2MB in the beginning and 186.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.13ms. Allocated memory is still 240.1MB. Free memory was 186.6MB in the beginning and 184.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 692.83ms. Allocated memory is still 240.1MB. Free memory was 184.5MB in the beginning and 190.8MB in the end (delta: -6.3MB). Peak memory consumption was 61.8MB. Max. memory is 8.0GB. * TraceAbstraction took 24322.30ms. Allocated memory was 240.1MB in the beginning and 943.7MB in the end (delta: 703.6MB). Free memory was 190.3MB in the beginning and 617.6MB in the end (delta: -427.3MB). Peak memory consumption was 276.8MB. 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: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 77. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add ; [L234] unsigned int zero ; [L235] int sa ; [L236] int sb ; [L237] int tmp ; [L238] int tmp___0 ; [L239] int tmp___1 ; [L240] int tmp___2 ; [L241] int tmp___3 ; [L242] int tmp___4 ; [L243] int tmp___5 ; [L244] int tmp___6 ; [L245] int tmp___7 ; [L246] int tmp___8 ; [L247] int tmp___9 ; [L248] int __retres23 ; VAL [ea=127, eb=126, ma=33554432] [L252] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); [L252] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=126, ma=33554432] [L252] zero = base2flt(0, 0) [L253] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L81] return (__retres4); [L253] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=126, ma=33554432, zero=0] [L253] a = base2flt(ma, ea) [L254] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=126, \old(m)=33554431] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=126, \old(m)=33554431, e=126, m=33554431] [L30] COND FALSE !(! m) VAL [\old(e)=126, \old(m)=33554431, e=126, m=33554431] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=126, \old(m)=33554431, e=126, m=33554431] [L58] COND TRUE 1 VAL [\old(e)=126, \old(m)=33554431, e=126, m=33554431] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=126, \old(m)=33554431, e=126, m=33554431] [L77] EXPR m & ~ (1U << 24U) [L77] m = m & ~ (1U << 24U) [L78] EXPR m | ((unsigned int ) (e + 128) << 24U) [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=126, \old(m)=33554431, __retres4=4294967295, e=126, m=33554431, res=4294967295] [L81] return (__retres4); [L254] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=8589934591, ea=127, eb=126, ma=33554432, mb=33554431, zero=0] [L254] b = base2flt(mb, eb) [L256] COND FALSE !(a < zero) [L259] COND TRUE a > zero [L260] tmp = 1 [L264] sa = tmp [L266] COND FALSE !(b < zero) [L269] COND TRUE b > zero [L270] tmp___0 = 1 [L274] sb = tmp___0 VAL [a=4294967295, b=4294967295, ea=127, eb=126, ma=33554432, mb=33554431, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L277] CALL addflt(a, b) VAL [\old(a)=4294967295, \old(b)=4294967295] [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; [L95] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295, tmp=4294967295] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) [L110] ea = (int )(a >> 24U) - 128 [L111] EXPR ma | (1U << 24U) [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) [L113] eb = (int )(b >> 24U) - 128 [L114] EXPR mb | (1U << 24U) [L114] mb = mb | (1U << 24U) [L115] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 670 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 629 mSDsluCounter, 2966 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2711 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3216 IncrementalHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 255 mSDtfsCounter, 3216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 233 SyntacticMatches, 10 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2339 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=6, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 172 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 1169 SizeOfPredicates, 23 NumberOfNonLiveVariables, 404 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 112/148 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: OVERALL_TIME: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 55, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 48, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 32, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 20, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 100, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 149, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 27, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 55, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 20, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 532, DAG_COMPRESSION_RETAINED_NODES: 161, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-04-01 09:11:42,331 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...