/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/floats-cdfpl/newton_2_6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:42:58,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:42:58,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:42:59,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:42:59,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:42:59,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:42:59,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:42:59,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:42:59,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:42:59,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:42:59,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:42:59,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:42:59,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:42:59,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:42:59,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:42:59,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:42:59,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:42:59,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:42:59,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:42:59,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:42:59,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:42:59,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:42:59,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:42:59,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:42:59,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:42:59,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:42:59,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:42:59,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:42:59,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:42:59,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:42:59,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:42:59,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:42:59,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:42:59,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:42:59,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:42:59,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:42:59,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:42:59,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:42:59,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:42:59,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:42:59,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:42:59,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:42:59,088 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:42:59,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:42:59,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:42:59,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:42:59,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:42:59,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:42:59,090 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:42:59,090 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:42:59,091 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:42:59,091 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:42:59,091 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:42:59,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:42:59,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:42:59,092 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:42:59,092 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:42:59,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:42:59,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:42:59,092 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:42:59,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:42:59,093 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:42:59,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:42:59,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:42:59,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:42:59,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:42:59,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:42:59,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:42:59,094 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:42:59,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:42:59,095 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:42:59,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:42:59,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:42:59,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:42:59,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:42:59,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:42:59,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:42:59,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:42:59,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:42:59,096 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:42:59,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:42:59,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:42:59,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:42:59,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:42:59,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:42:59,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:42:59,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:42:59,307 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:42:59,308 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:42:59,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2023-03-31 22:43:00,390 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:43:00,557 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:43:00,557 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2023-03-31 22:43:00,562 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f9f7c2f/026dda12f40c449096ed198285e368b2/FLAG2609395ea [2023-03-31 22:43:00,574 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f9f7c2f/026dda12f40c449096ed198285e368b2 [2023-03-31 22:43:00,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:43:00,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:43:00,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:00,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:43:00,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:43:00,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5303b905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00, skipping insertion in model container [2023-03-31 22:43:00,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:43:00,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:43:00,759 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/floats-cdfpl/newton_2_6.i[1743,1756] [2023-03-31 22:43:00,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:00,768 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:43:00,785 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/floats-cdfpl/newton_2_6.i[1743,1756] [2023-03-31 22:43:00,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:00,795 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:43:00,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00 WrapperNode [2023-03-31 22:43:00,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:00,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:43:00,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:43:00,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:43:00,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:43:00,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:43:00,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:43:00,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:43:00,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (1/1) ... [2023-03-31 22:43:00,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:00,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:43:00,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 22:43:00,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 22:43:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:43:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:43:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:43:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:43:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-03-31 22:43:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-03-31 22:43:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:43:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:43:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:43:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:43:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:43:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:43:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:43:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:43:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:43:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:43:00,931 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:43:00,933 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:43:01,016 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:43:01,038 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:43:01,038 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 22:43:01,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:01 BoogieIcfgContainer [2023-03-31 22:43:01,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:43:01,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:43:01,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:43:01,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:43:01,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:43:00" (1/3) ... [2023-03-31 22:43:01,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4dcfb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:01, skipping insertion in model container [2023-03-31 22:43:01,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:00" (2/3) ... [2023-03-31 22:43:01,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4dcfb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:01, skipping insertion in model container [2023-03-31 22:43:01,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:01" (3/3) ... [2023-03-31 22:43:01,048 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_2_6.i [2023-03-31 22:43:01,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:43:01,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:43:01,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:43:01,169 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;@7f3b07fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:43:01,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:43:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 22:43:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 22:43:01,184 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:01,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:43:01,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:01,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1760079633, now seen corresponding path program 1 times [2023-03-31 22:43:01,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682011965] [2023-03-31 22:43:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:01,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:01,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:43:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:01,362 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:43:01,364 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:43:01,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:43:01,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:43:01,369 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-03-31 22:43:01,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:43:01,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:43:01 BoogieIcfgContainer [2023-03-31 22:43:01,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:43:01,388 INFO L158 Benchmark]: Toolchain (without parser) took 810.12ms. Allocated memory is still 232.8MB. Free memory was 184.9MB in the beginning and 146.1MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-03-31 22:43:01,388 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:43:01,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.30ms. Allocated memory is still 232.8MB. Free memory was 184.9MB in the beginning and 174.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 22:43:01,389 INFO L158 Benchmark]: Boogie Preprocessor took 22.12ms. Allocated memory is still 232.8MB. Free memory was 174.4MB in the beginning and 172.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 22:43:01,389 INFO L158 Benchmark]: RCFGBuilder took 221.67ms. Allocated memory is still 232.8MB. Free memory was 172.9MB in the beginning and 161.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 22:43:01,390 INFO L158 Benchmark]: TraceAbstraction took 344.14ms. Allocated memory is still 232.8MB. Free memory was 160.8MB in the beginning and 146.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-03-31 22:43:01,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.30ms. Allocated memory is still 232.8MB. Free memory was 184.9MB in the beginning and 174.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.12ms. Allocated memory is still 232.8MB. Free memory was 174.4MB in the beginning and 172.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 221.67ms. Allocated memory is still 232.8MB. Free memory was 172.9MB in the beginning and 161.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 344.14ms. Allocated memory is still 232.8MB. Free memory was 160.8MB in the beginning and 146.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) VAL [\old(cond)=1] [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) VAL [IN=57] [L42] CALL, EXPR f(IN) VAL [\old(x)=57] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) VAL [IN=57, f(IN)=56] [L42] CALL, EXPR fp(IN) VAL [\old(x)=57] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) VAL [IN=57, f(IN)=56, fp(IN)=55] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=59] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) VAL [IN=57, f(x)=60, x=59] [L44] CALL, EXPR fp(x) VAL [\old(x)=59] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) VAL [IN=57, f(x)=60, fp(x)=58, x=59] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=57] [L51] reach_error() VAL [IN=57] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-03-31 22:43:01,409 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...