./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_poly.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:47:51,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:47:51,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:47:52,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:47:52,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:47:52,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:47:52,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:47:52,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:47:52,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:47:52,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:47:52,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:47:52,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:47:52,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:47:52,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:47:52,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:47:52,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:47:52,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:47:52,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:47:52,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:47:52,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:47:52,076 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:47:52,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:47:52,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:47:52,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:47:52,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:47:52,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:47:52,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:47:52,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:47:52,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:47:52,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:47:52,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:47:52,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:47:52,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:47:52,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:47:52,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:47:52,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:47:52,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:47:52,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:47:52,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:47:52,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:47:52,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:47:52,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:47:52,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:47:52,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:47:52,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:47:52,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:47:52,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:47:52,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:47:52,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:47:52,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:47:52,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:47:52,117 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:47:52,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:47:52,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:47:52,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:47:52,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:47:52,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:47:52,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:47:52,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:47:52,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:47:52,119 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:47:52,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:47:52,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:47:52,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:47:52,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:47:52,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:47:52,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:47:52,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:47:52,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:47:52,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:47:52,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:47:52,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:47:52,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:47:52,121 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:47:52,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:47:52,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:47:52,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2022-07-19 13:47:52,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:47:52,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:47:52,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:47:52,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:47:52,375 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:47:52,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-07-19 13:47:52,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d535234ae/d72081eb35ce4dc1b58f0a99bc9ae65d/FLAG03a471f21 [2022-07-19 13:47:52,821 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:47:52,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-07-19 13:47:52,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d535234ae/d72081eb35ce4dc1b58f0a99bc9ae65d/FLAG03a471f21 [2022-07-19 13:47:52,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d535234ae/d72081eb35ce4dc1b58f0a99bc9ae65d [2022-07-19 13:47:52,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:47:52,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:47:52,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:47:52,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:47:52,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:47:52,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:47:52" (1/1) ... [2022-07-19 13:47:52,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c740fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:52, skipping insertion in model container [2022-07-19 13:47:52,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:47:52" (1/1) ... [2022-07-19 13:47:52,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:47:52,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:47:53,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-07-19 13:47:53,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:47:53,057 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:47:53,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-07-19 13:47:53,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:47:53,082 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:47:53,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53 WrapperNode [2022-07-19 13:47:53,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:47:53,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:47:53,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:47:53,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:47:53,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,110 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-07-19 13:47:53,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:47:53,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:47:53,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:47:53,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:47:53,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:47:53,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:47:53,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:47:53,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:47:53,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (1/1) ... [2022-07-19 13:47:53,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:47:53,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:47:53,162 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) [2022-07-19 13:47:53,169 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 [2022-07-19 13:47:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:47:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:47:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:47:53,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:47:53,241 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:47:53,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:47:53,327 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:47:53,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:47:53,333 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:47:53,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:47:53 BoogieIcfgContainer [2022-07-19 13:47:53,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:47:53,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:47:53,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:47:53,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:47:53,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:47:52" (1/3) ... [2022-07-19 13:47:53,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de6b41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:47:53, skipping insertion in model container [2022-07-19 13:47:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:53" (2/3) ... [2022-07-19 13:47:53,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de6b41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:47:53, skipping insertion in model container [2022-07-19 13:47:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:47:53" (3/3) ... [2022-07-19 13:47:53,342 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2022-07-19 13:47:53,355 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:47:53,356 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:47:53,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:47:53,403 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=PETRI_NET, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ef6250a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51cf4104 [2022-07-19 13:47:53,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:47:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:47:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:47:53,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:47:53,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:47:53,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:47:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:47:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-07-19 13:47:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:47:53,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296943900] [2022-07-19 13:47:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:47:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:47:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:47:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:47:53,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:47:53,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296943900] [2022-07-19 13:47:53,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296943900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:47:53,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:47:53,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:47:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267153417] [2022-07-19 13:47:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:47:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:47:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:47:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:47:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:47:53,606 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:47:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:47:53,620 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-19 13:47:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:47:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-19 13:47:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:47:53,629 INFO L225 Difference]: With dead ends: 23 [2022-07-19 13:47:53,629 INFO L226 Difference]: Without dead ends: 9 [2022-07-19 13:47:53,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:47:53,637 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:47:53,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:47:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-19 13:47:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-19 13:47:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:47:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-19 13:47:53,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-07-19 13:47:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:47:53,666 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-19 13:47:53,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:47:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-19 13:47:53,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:47:53,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:47:53,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:47:53,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:47:53,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:47:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:47:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-07-19 13:47:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:47:53,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142587232] [2022-07-19 13:47:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:47:53,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:47:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:47:53,709 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:47:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:47:53,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:47:53,756 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:47:53,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:47:53,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:47:53,766 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:47:53,771 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:47:53,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:47:53 BoogieIcfgContainer [2022-07-19 13:47:53,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:47:53,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:47:53,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:47:53,804 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:47:53,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:47:53" (3/4) ... [2022-07-19 13:47:53,809 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:47:53,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:47:53,811 INFO L158 Benchmark]: Toolchain (without parser) took 961.08ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 60.9MB in the beginning and 80.1MB in the end (delta: -19.3MB). Peak memory consumption was 172.4kB. Max. memory is 16.1GB. [2022-07-19 13:47:53,811 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:47:53,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.54ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 69.3MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:47:53,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.64ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 67.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:47:53,817 INFO L158 Benchmark]: Boogie Preprocessor took 15.72ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 66.8MB in the end (delta: 994.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:47:53,818 INFO L158 Benchmark]: RCFGBuilder took 207.54ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 58.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:47:53,818 INFO L158 Benchmark]: TraceAbstraction took 465.36ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 57.8MB in the beginning and 80.1MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:47:53,819 INFO L158 Benchmark]: Witness Printer took 6.73ms. Allocated memory is still 113.2MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:47:53,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.54ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 69.3MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.64ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 67.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.72ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 66.8MB in the end (delta: 994.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 207.54ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 58.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 465.36ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 57.8MB in the beginning and 80.1MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.73ms. Allocated memory is still 113.2MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * 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: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27. Possible FailurePath: [L18] double sqrt2 = 1.414213538169860839843750; VAL [sqrt2=11863283/8388608] [L22] double S, I; [L24] I = __VERIFIER_nondet_double() [L25] CALL assume_abort_if_not(I >= 1. && I <= 3.) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, sqrt2=11863283/8388608] [L25] RET assume_abort_if_not(I >= 1. && I <= 3.) [L27] COND TRUE I >= 2. [L27] S = sqrt2 * (1.+(I/2.- 1.)*(.5-0.125*(I/2.-1.))) VAL [sqrt2=11863283/8388608] [L30] CALL __VERIFIER_assert(S >= 1. && S <= 2.) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] [L16] reach_error() VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:47:53,870 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:47:55,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:47:55,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:47:55,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:47:55,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:47:55,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:47:55,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:47:55,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:47:55,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:47:55,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:47:55,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:47:55,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:47:55,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:47:55,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:47:55,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:47:55,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:47:55,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:47:55,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:47:55,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:47:55,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:47:55,900 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:47:55,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:47:55,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:47:55,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:47:55,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:47:55,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:47:55,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:47:55,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:47:55,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:47:55,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:47:55,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:47:55,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:47:55,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:47:55,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:47:55,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:47:55,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:47:55,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:47:55,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:47:55,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:47:55,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:47:55,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:47:55,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:47:55,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:47:55,953 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:47:55,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:47:55,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:47:55,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:47:55,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:47:55,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:47:55,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:47:55,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:47:55,956 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:47:55,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:47:55,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:47:55,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:47:55,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:47:55,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:47:55,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:47:55,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:47:55,968 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:47:55,968 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:47:55,968 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:47:55,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:47:55,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:47:55,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:47:55,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:47:55,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:47:55,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:47:55,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:47:55,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:47:55,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:47:55,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:47:55,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:47:55,971 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:47:55,971 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:47:55,971 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:47:55,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:47:55,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:47:55,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:47:55,972 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2022-07-19 13:47:56,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:47:56,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:47:56,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:47:56,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:47:56,314 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:47:56,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-07-19 13:47:56,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66468ea2/ba5b36f39c7348f092cd1431d266760b/FLAG0ddb2de25 [2022-07-19 13:47:56,835 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:47:56,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-07-19 13:47:56,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66468ea2/ba5b36f39c7348f092cd1431d266760b/FLAG0ddb2de25 [2022-07-19 13:47:56,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e66468ea2/ba5b36f39c7348f092cd1431d266760b [2022-07-19 13:47:56,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:47:56,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:47:56,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:47:56,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:47:56,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:47:56,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:47:56" (1/1) ... [2022-07-19 13:47:56,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1025c074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:56, skipping insertion in model container [2022-07-19 13:47:56,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:47:56" (1/1) ... [2022-07-19 13:47:56,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:47:56,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:47:57,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-07-19 13:47:57,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:47:57,070 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:47:57,114 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-07-19 13:47:57,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:47:57,146 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:47:57,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57 WrapperNode [2022-07-19 13:47:57,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:47:57,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:47:57,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:47:57,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:47:57,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,189 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-07-19 13:47:57,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:47:57,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:47:57,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:47:57,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:47:57,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:47:57,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:47:57,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:47:57,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:47:57,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (1/1) ... [2022-07-19 13:47:57,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:47:57,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:47:57,273 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) [2022-07-19 13:47:57,295 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 [2022-07-19 13:47:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:47:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:47:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:47:57,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:47:57,378 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:47:57,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:48:01,814 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:48:01,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:48:01,819 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:48:01,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:48:01 BoogieIcfgContainer [2022-07-19 13:48:01,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:48:01,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:48:01,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:48:01,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:48:01,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:47:56" (1/3) ... [2022-07-19 13:48:01,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9bf203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:48:01, skipping insertion in model container [2022-07-19 13:48:01,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:47:57" (2/3) ... [2022-07-19 13:48:01,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9bf203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:48:01, skipping insertion in model container [2022-07-19 13:48:01,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:48:01" (3/3) ... [2022-07-19 13:48:01,846 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2022-07-19 13:48:01,857 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:48:01,871 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:48:01,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:48:01,934 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=PETRI_NET, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d8db70e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fbd7921 [2022-07-19 13:48:01,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:48:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:48:01,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:48:01,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:48:01,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:48:01,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:48:01,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:48:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-07-19 13:48:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:48:01,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539361512] [2022-07-19 13:48:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:48:01,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:48:01,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:48:01,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:48:01,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:48:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:48:02,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:48:02,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:48:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:48:02,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:48:02,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:48:02,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539361512] [2022-07-19 13:48:02,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539361512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:48:02,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:48:02,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:48:02,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218463271] [2022-07-19 13:48:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:48:02,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:48:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:48:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:48:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:48:02,782 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:48:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:48:02,794 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-19 13:48:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:48:02,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-19 13:48:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:48:02,801 INFO L225 Difference]: With dead ends: 23 [2022-07-19 13:48:02,802 INFO L226 Difference]: Without dead ends: 9 [2022-07-19 13:48:02,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:48:02,807 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:48:02,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:48:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-19 13:48:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-19 13:48:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:48:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-19 13:48:02,831 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-07-19 13:48:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:48:02,831 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-19 13:48:02,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:48:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-19 13:48:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:48:02,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:48:02,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:48:02,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:48:03,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:48:03,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:48:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:48:03,049 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-07-19 13:48:03,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:48:03,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275622192] [2022-07-19 13:48:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:48:03,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:48:03,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:48:03,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:48:03,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:48:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:48:04,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 13:48:04,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:48:21,688 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (and (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (= |c_ULTIMATE.start_main_~S~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode |ULTIMATE.start_main_~I~0#1| .cse0) .cse1))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse2))))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 13:50:09,236 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse5)))))))) (let ((.cse2 (fp.leq .cse3 .cse0)) (.cse1 (fp.geq .cse3 .cse4))) (or (and .cse1 .cse2 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (and (or (not .cse2) (not .cse1)) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))))))))) is different from false [2022-07-19 13:50:11,327 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse5)))))))) (let ((.cse2 (fp.leq .cse3 .cse0)) (.cse1 (fp.geq .cse3 .cse4))) (or (and .cse1 .cse2 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (and (or (not .cse2) (not .cse1)) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))))))))) is different from true [2022-07-19 13:51:03,777 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse2 (let ((.cse3 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse2))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse3)))))))) (or (not (fp.leq .cse1 .cse0)) (not (fp.geq .cse1 .cse2)))))))) is different from false [2022-07-19 13:51:05,873 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse2 (let ((.cse3 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~I~0#1| .cse0) .cse2))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse3)))))))) (or (not (fp.leq .cse1 .cse0)) (not (fp.geq .cse1 .cse2)))))))) is different from true [2022-07-19 13:51:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:51:05,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:51:05,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:51:05,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275622192] [2022-07-19 13:51:05,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275622192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:51:05,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:51:05,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 13:51:05,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938572704] [2022-07-19 13:51:05,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:51:05,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 13:51:05,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:51:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 13:51:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=12, Unknown=5, NotChecked=24, Total=56 [2022-07-19 13:51:05,877 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:08,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:51:11,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:51:11,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:51:11,087 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-19 13:51:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 13:51:11,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-19 13:51:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:51:11,264 INFO L225 Difference]: With dead ends: 13 [2022-07-19 13:51:11,264 INFO L226 Difference]: Without dead ends: 9 [2022-07-19 13:51:11,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=20, Invalid=17, Unknown=5, NotChecked=30, Total=72 [2022-07-19 13:51:11,266 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-19 13:51:11,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 2 Unknown, 16 Unchecked, 4.9s Time] [2022-07-19 13:51:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-19 13:51:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-19 13:51:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-19 13:51:11,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-19 13:51:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:51:11,269 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-19 13:51:11,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-19 13:51:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:51:11,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:11,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:51:11,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 13:51:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:51:11,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2022-07-19 13:51:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:51:11,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460352886] [2022-07-19 13:51:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:11,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:51:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:51:11,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:51:11,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 13:51:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:51:14,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 13:51:14,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:51:30,612 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ULTIMATE.start_main_~S~0#1| (fp.add c_currentRoundingMode .cse0 (let ((.cse1 (fp.sub c_currentRoundingMode |ULTIMATE.start_main_~I~0#1| .cse0))) (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0)))))))))) (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (not (fp.geq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false