./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_Householder_pseudoconstant.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 e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:27:05,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:27:05,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:27:05,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:27:05,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:27:05,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:27:05,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:27:05,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:27:05,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:27:05,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:27:05,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:27:05,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:27:05,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:27:05,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:27:05,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:27:05,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:27:05,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:27:05,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:27:05,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:27:05,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:27:05,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:27:05,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:27:05,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:27:05,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:27:05,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:27:05,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:27:05,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:27:05,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:27:05,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:27:05,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:27:05,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:27:05,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:27:05,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:27:05,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:27:05,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:27:05,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:27:05,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:27:05,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:27:05,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:27:05,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:27:05,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:27:05,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:27:05,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:27:05,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:27:05,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:27:05,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:27:05,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:27:05,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:27:05,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:27:05,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:27:05,582 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:27:05,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:27:05,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:27:05,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:27:05,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:27:05,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:27:05,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:27:05,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:27:05,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:27:05,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:27:05,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:27:05,586 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:27:05,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:27:05,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:27:05,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:27:05,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:27:05,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:27:05,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:27:05,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:27:05,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:27:05,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:27:05,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:27:05,588 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:27:05,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:27:05,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:27:05,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2021-12-27 23:27:05,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:27:05,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:27:05,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:27:05,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:27:05,900 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:27:05,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-12-27 23:27:05,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0892680/8d8ba28d950846629f384e1057b19421/FLAG64a4f2cf4 [2021-12-27 23:27:06,342 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:27:06,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-12-27 23:27:06,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0892680/8d8ba28d950846629f384e1057b19421/FLAG64a4f2cf4 [2021-12-27 23:27:06,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0892680/8d8ba28d950846629f384e1057b19421 [2021-12-27 23:27:06,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:27:06,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:27:06,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:27:06,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:27:06,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:27:06,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4121b1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06, skipping insertion in model container [2021-12-27 23:27:06,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:27:06,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:27:06,538 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_Householder_pseudoconstant.c[855,868] [2021-12-27 23:27:06,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:27:06,587 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:27:06,599 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_Householder_pseudoconstant.c[855,868] [2021-12-27 23:27:06,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:27:06,631 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:27:06,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06 WrapperNode [2021-12-27 23:27:06,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:27:06,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:27:06,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:27:06,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:27:06,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,663 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2021-12-27 23:27:06,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:27:06,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:27:06,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:27:06,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:27:06,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:27:06,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:27:06,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:27:06,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:27:06,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (1/1) ... [2021-12-27 23:27:06,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:27:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:27:06,741 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) [2021-12-27 23:27:06,765 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 [2021-12-27 23:27:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:27:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:27:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:27:06,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:27:06,828 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:27:06,829 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:27:06,941 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:27:06,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:27:06,946 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-27 23:27:06,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:27:06 BoogieIcfgContainer [2021-12-27 23:27:06,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:27:06,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:27:06,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:27:06,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:27:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:27:06" (1/3) ... [2021-12-27 23:27:06,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f671cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:27:06, skipping insertion in model container [2021-12-27 23:27:06,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:06" (2/3) ... [2021-12-27 23:27:06,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f671cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:27:06, skipping insertion in model container [2021-12-27 23:27:06,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:27:06" (3/3) ... [2021-12-27 23:27:06,954 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2021-12-27 23:27:06,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:27:06,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:27:07,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:27:07,025 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:27:07,025 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:27:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-12-27 23:27:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 23:27:07,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:27:07,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:27:07,048 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:27:07,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:27:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-12-27 23:27:07,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:27:07,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576924496] [2021-12-27 23:27:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:27:07,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:27:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:27:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:27:07,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:27:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576924496] [2021-12-27 23:27:07,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576924496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:27:07,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:27:07,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:27:07,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090789724] [2021-12-27 23:27:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:27:07,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:27:07,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:27:07,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:27:07,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:27:07,260 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-12-27 23:27:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:27:07,270 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-12-27 23:27:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:27:07,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-12-27 23:27:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:27:07,276 INFO L225 Difference]: With dead ends: 36 [2021-12-27 23:27:07,276 INFO L226 Difference]: Without dead ends: 15 [2021-12-27 23:27:07,278 INFO L932 BasicCegarLoop]: 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 [2021-12-27 23:27:07,283 INFO L933 BasicCegarLoop]: 21 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, 21 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 [2021-12-27 23:27:07,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:27:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-27 23:27:07,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-27 23:27:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-12-27 23:27:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-12-27 23:27:07,301 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-12-27 23:27:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:27:07,305 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-27 23:27:07,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-12-27 23:27:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-12-27 23:27:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 23:27:07,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:27:07,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:27:07,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:27:07,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:27:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:27:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-12-27 23:27:07,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:27:07,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599517134] [2021-12-27 23:27:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:27:07,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:27:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:27:07,344 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 23:27:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:27:07,384 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-27 23:27:07,387 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 23:27:07,388 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 23:27:07,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 23:27:07,394 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-27 23:27:07,396 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 23:27:07,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:27:07 BoogieIcfgContainer [2021-12-27 23:27:07,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 23:27:07,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 23:27:07,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 23:27:07,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 23:27:07,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:27:06" (3/4) ... [2021-12-27 23:27:07,427 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-27 23:27:07,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 23:27:07,428 INFO L158 Benchmark]: Toolchain (without parser) took 1069.02ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 29.7MB in the beginning and 45.8MB in the end (delta: -16.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:27:07,429 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:27:07,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.10ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 29.5MB in the beginning and 51.5MB in the end (delta: -22.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-12-27 23:27:07,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.03ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 49.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:27:07,435 INFO L158 Benchmark]: Boogie Preprocessor took 34.85ms. Allocated memory is still 69.2MB. Free memory was 49.8MB in the beginning and 48.8MB in the end (delta: 992.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:27:07,435 INFO L158 Benchmark]: RCFGBuilder took 247.59ms. Allocated memory is still 69.2MB. Free memory was 48.6MB in the beginning and 39.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-27 23:27:07,435 INFO L158 Benchmark]: TraceAbstraction took 474.98ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 46.4MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:27:07,436 INFO L158 Benchmark]: Witness Printer took 2.84ms. Allocated memory is still 69.2MB. Free memory was 46.1MB in the beginning and 45.8MB in the end (delta: 299.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:27:07,441 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 52.4MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.10ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 29.5MB in the beginning and 51.5MB in the end (delta: -22.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.03ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 49.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.85ms. Allocated memory is still 69.2MB. Free memory was 49.8MB in the beginning and 48.8MB in the end (delta: 992.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.59ms. Allocated memory is still 69.2MB. Free memory was 48.6MB in the beginning and 39.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 474.98ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 46.4MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.84ms. Allocated memory is still 69.2MB. Free memory was 46.1MB in the beginning and 45.8MB in the end (delta: 299.4kB). 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: 20]: 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 59, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L55] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L18] COND FALSE !(!cond) VAL [\old(cond)=1, _EPS=1/1000000, cond=1] [L55] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L57] CALL, EXPR SqrtR(dd) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [\old(Input)=50, _EPS=1/1000000, Input=50] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [\old(Input)=50, _EPS=1/1000000, Input=50, xn=1] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [\old(Input)=50, _EPS=1/1000000, cond=0, i=0, Input=50, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) VAL [\old(Input)=50, _EPS=1/1000000, cond=0, i=0, Input=50, xn=1, xn=1] [L44] return 1.0 / xnp1; VAL [\old(Input)=50, _EPS=1/1000000, cond=0, i=0, Input=50, xn=1, xn=1] [L57] RET, EXPR SqrtR(dd) [L57] r = SqrtR(dd) [L59] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 21 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, 21 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=19occurred 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, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2021-12-27 23:27:07,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- 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_Householder_pseudoconstant.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 e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:27:09,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:27:09,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:27:09,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:27:09,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:27:09,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:27:09,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:27:09,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:27:09,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:27:09,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:27:09,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:27:09,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:27:09,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:27:09,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:27:09,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:27:09,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:27:09,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:27:09,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:27:09,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:27:09,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:27:09,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:27:09,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:27:09,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:27:09,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:27:09,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:27:09,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:27:09,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:27:09,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:27:09,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:27:09,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:27:09,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:27:09,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:27:09,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:27:09,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:27:09,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:27:09,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:27:09,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:27:09,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:27:09,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:27:09,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:27:09,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:27:09,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-27 23:27:09,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:27:09,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:27:09,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:27:09,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:27:09,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:27:09,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:27:09,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:27:09,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:27:09,373 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:27:09,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:27:09,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:27:09,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:27:09,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:27:09,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:27:09,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:27:09,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:27:09,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:27:09,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:27:09,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:27:09,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:27:09,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:27:09,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:27:09,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:27:09,377 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-27 23:27:09,377 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-27 23:27:09,377 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:27:09,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:27:09,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:27:09,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-27 23:27:09,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2021-12-27 23:27:09,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:27:09,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:27:09,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:27:09,636 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:27:09,636 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:27:09,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-12-27 23:27:09,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2584a9850/16aa465884724f1aae5f40f83cda636b/FLAG3ea9fceff [2021-12-27 23:27:10,038 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:27:10,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-12-27 23:27:10,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2584a9850/16aa465884724f1aae5f40f83cda636b/FLAG3ea9fceff [2021-12-27 23:27:10,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2584a9850/16aa465884724f1aae5f40f83cda636b [2021-12-27 23:27:10,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:27:10,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:27:10,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:27:10,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:27:10,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:27:10,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aca4202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10, skipping insertion in model container [2021-12-27 23:27:10,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:27:10,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:27:10,170 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_Householder_pseudoconstant.c[855,868] [2021-12-27 23:27:10,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:27:10,212 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:27:10,232 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_Householder_pseudoconstant.c[855,868] [2021-12-27 23:27:10,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:27:10,262 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:27:10,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10 WrapperNode [2021-12-27 23:27:10,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:27:10,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:27:10,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:27:10,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:27:10,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,300 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-27 23:27:10,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:27:10,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:27:10,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:27:10,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:27:10,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:27:10,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:27:10,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:27:10,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:27:10,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (1/1) ... [2021-12-27 23:27:10,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:27:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:27:10,363 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) [2021-12-27 23:27:10,401 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 [2021-12-27 23:27:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:27:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-27 23:27:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:27:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:27:10,467 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:27:10,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:27:20,146 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:27:20,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:27:20,151 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-27 23:27:20,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:27:20 BoogieIcfgContainer [2021-12-27 23:27:20,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:27:20,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:27:20,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:27:20,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:27:20,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:27:10" (1/3) ... [2021-12-27 23:27:20,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffeb24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:27:20, skipping insertion in model container [2021-12-27 23:27:20,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:27:10" (2/3) ... [2021-12-27 23:27:20,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffeb24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:27:20, skipping insertion in model container [2021-12-27 23:27:20,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:27:20" (3/3) ... [2021-12-27 23:27:20,158 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2021-12-27 23:27:20,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:27:20,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:27:20,215 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:27:20,221 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:27:20,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:27:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-12-27 23:27:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 23:27:20,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:27:20,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:27:20,245 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:27:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:27:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-12-27 23:27:20,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:27:20,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336070074] [2021-12-27 23:27:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:27:20,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:27:20,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:27:20,260 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) [2021-12-27 23:27:20,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-27 23:27:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:27:21,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-27 23:27:21,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:27:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:27:21,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:27:21,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:27:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336070074] [2021-12-27 23:27:21,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336070074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:27:21,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:27:21,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:27:21,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89474470] [2021-12-27 23:27:21,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:27:21,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:27:21,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:27:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:27:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:27:21,627 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-12-27 23:27:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:27:21,641 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-12-27 23:27:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:27:21,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-12-27 23:27:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:27:21,650 INFO L225 Difference]: With dead ends: 36 [2021-12-27 23:27:21,650 INFO L226 Difference]: Without dead ends: 15 [2021-12-27 23:27:21,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:27:21,656 INFO L933 BasicCegarLoop]: 21 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, 21 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 [2021-12-27 23:27:21,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:27:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-27 23:27:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-27 23:27:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-12-27 23:27:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-12-27 23:27:21,681 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-12-27 23:27:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:27:21,682 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-27 23:27:21,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-12-27 23:27:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-12-27 23:27:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 23:27:21,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:27:21,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:27:21,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-27 23:27:21,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:27:21,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:27:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:27:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-12-27 23:27:21,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:27:21,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14572315] [2021-12-27 23:27:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:27:21,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:27:21,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:27:21,897 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) [2021-12-27 23:27:21,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-27 23:27:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:27:23,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-27 23:27:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:27:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:27:24,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:27:24,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:27:24,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14572315] [2021-12-27 23:27:24,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14572315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:27:24,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:27:24,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 23:27:24,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944848293] [2021-12-27 23:27:24,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:27:24,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 23:27:24,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:27:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 23:27:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-27 23:27:24,313 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-27 23:27:27,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:27:29,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:27:32,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:27:35,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:27:37,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:27:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:27:39,058 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-12-27 23:27:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-27 23:27:39,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-12-27 23:27:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:27:39,061 INFO L225 Difference]: With dead ends: 34 [2021-12-27 23:27:39,061 INFO L226 Difference]: Without dead ends: 21 [2021-12-27 23:27:39,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-27 23:27:39,062 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-12-27 23:27:39,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 5 Unknown, 0 Unchecked, 14.7s Time] [2021-12-27 23:27:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-27 23:27:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-27 23:27:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-12-27 23:27:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-27 23:27:39,066 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2021-12-27 23:27:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:27:39,066 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-27 23:27:39,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-27 23:27:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-27 23:27:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 23:27:39,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:27:39,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:27:39,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-27 23:27:39,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:27:39,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:27:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:27:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-12-27 23:27:39,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:27:39,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175009445] [2021-12-27 23:27:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:27:39,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:27:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:27:39,269 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) [2021-12-27 23:27:39,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-27 23:27:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:27:42,681 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-27 23:27:42,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:28:03,760 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-12-27 23:28:18,569 WARN L228 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)