/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_0490a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:59:13,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:59:13,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:59:13,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:59:13,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:59:13,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:59:13,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:59:13,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:59:13,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:59:13,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:59:13,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:59:13,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:59:13,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:59:13,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:59:13,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:59:13,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:59:13,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:59:13,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:59:13,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:59:13,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:59:13,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:59:13,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:59:13,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:59:13,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:59:13,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:59:13,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:59:13,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:59:13,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:59:13,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:59:13,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:59:13,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:59:13,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:59:13,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:59:13,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:59:13,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:59:13,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:59:13,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:59:13,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:59:13,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:59:13,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:59:13,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:59:13,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 11:59:13,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:59:13,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:59:13,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:59:13,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:59:13,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:59:13,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:59:13,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:59:13,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:59:13,543 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:59:13,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:59:13,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:59:13,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:59:13,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:59:13,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:59:13,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:59:13,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:59:13,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:59:13,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:59:13,545 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:59:13,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:59:13,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:59:13,546 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:59:13,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:59:13,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:59:13,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:59:13,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:59:13,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:59:13,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:59:13,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:59:13,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:59:13,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:59:13,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:59:13,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:59:13,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:59:13,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:59:13,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:59:13,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:59:13,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:59:13,946 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:59:13,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0490a.c [2022-10-16 11:59:14,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36213503a/e2b48f562d7d4557a5e3aaa2245feb83/FLAGe1875c910 [2022-10-16 11:59:14,740 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:59:14,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0490a.c [2022-10-16 11:59:14,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36213503a/e2b48f562d7d4557a5e3aaa2245feb83/FLAGe1875c910 [2022-10-16 11:59:15,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36213503a/e2b48f562d7d4557a5e3aaa2245feb83 [2022-10-16 11:59:15,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:59:15,046 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:59:15,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:59:15,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:59:15,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:59:15,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d46b894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15, skipping insertion in model container [2022-10-16 11:59:15,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:59:15,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:59:15,515 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-newlib/double_req_bl_0490a.c[9221,9234] [2022-10-16 11:59:15,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:59:15,537 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:59:15,621 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-newlib/double_req_bl_0490a.c[9221,9234] [2022-10-16 11:59:15,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:59:15,645 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:59:15,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15 WrapperNode [2022-10-16 11:59:15,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:59:15,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:59:15,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:59:15,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:59:15,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,754 INFO L138 Inliner]: procedures = 23, calls = 63, calls flagged for inlining = 5, calls inlined = 4, statements flattened = 147 [2022-10-16 11:59:15,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:59:15,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:59:15,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:59:15,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:59:15,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:59:15,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:59:15,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:59:15,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:59:15,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (1/1) ... [2022-10-16 11:59:15,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:59:15,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:15,911 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) [2022-10-16 11:59:15,932 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 [2022-10-16 11:59:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:59:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:59:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:59:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2022-10-16 11:59:15,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2022-10-16 11:59:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-16 11:59:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:59:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-16 11:59:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:59:15,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:59:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:59:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:59:16,150 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:59:16,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:59:17,059 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:59:17,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:59:17,070 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-16 11:59:17,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:59:17 BoogieIcfgContainer [2022-10-16 11:59:17,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:59:17,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:59:17,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:59:17,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:59:17,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:59:15" (1/3) ... [2022-10-16 11:59:17,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b466fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:59:17, skipping insertion in model container [2022-10-16 11:59:17,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:15" (2/3) ... [2022-10-16 11:59:17,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b466fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:59:17, skipping insertion in model container [2022-10-16 11:59:17,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:59:17" (3/3) ... [2022-10-16 11:59:17,083 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0490a.c [2022-10-16 11:59:17,106 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:59:17,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-10-16 11:59:17,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:59:17,184 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28deb653, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:59:17,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-10-16 11:59:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 98 states have (on average 1.8265306122448979) internal successors, (179), 130 states have internal predecessors, (179), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:59:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 11:59:17,199 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:17,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:17,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:17,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1470449537, now seen corresponding path program 1 times [2022-10-16 11:59:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:17,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443274167] [2022-10-16 11:59:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:17,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:17,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443274167] [2022-10-16 11:59:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443274167] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:17,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:17,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014189104] [2022-10-16 11:59:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:17,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:59:17,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:59:17,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:59:17,445 INFO L87 Difference]: Start difference. First operand has 134 states, 98 states have (on average 1.8265306122448979) internal successors, (179), 130 states have internal predecessors, (179), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-10-16 11:59:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:17,496 INFO L93 Difference]: Finished difference Result 266 states and 366 transitions. [2022-10-16 11:59:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:59:17,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-10-16 11:59:17,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:17,510 INFO L225 Difference]: With dead ends: 266 [2022-10-16 11:59:17,510 INFO L226 Difference]: Without dead ends: 115 [2022-10-16 11:59:17,517 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 [2022-10-16 11:59:17,521 INFO L413 NwaCegarLoop]: 163 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, 163 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 [2022-10-16 11:59:17,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-16 11:59:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-10-16 11:59:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 81 states have (on average 1.6419753086419753) internal successors, (133), 113 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2022-10-16 11:59:17,575 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 7 [2022-10-16 11:59:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:17,575 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2022-10-16 11:59:17,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-10-16 11:59:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2022-10-16 11:59:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 11:59:17,577 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:17,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:17,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:59:17,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:17,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:17,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2099519409, now seen corresponding path program 1 times [2022-10-16 11:59:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:17,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905584998] [2022-10-16 11:59:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:17,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:17,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905584998] [2022-10-16 11:59:17,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905584998] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:17,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:17,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377048694] [2022-10-16 11:59:17,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:17,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:17,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:17,765 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-10-16 11:59:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:17,802 INFO L93 Difference]: Finished difference Result 222 states and 260 transitions. [2022-10-16 11:59:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9 [2022-10-16 11:59:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:17,805 INFO L225 Difference]: With dead ends: 222 [2022-10-16 11:59:17,805 INFO L226 Difference]: Without dead ends: 115 [2022-10-16 11:59:17,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:17,809 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:17,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:17,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-16 11:59:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-10-16 11:59:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 113 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2022-10-16 11:59:17,829 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 9 [2022-10-16 11:59:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:17,830 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2022-10-16 11:59:17,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-10-16 11:59:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2022-10-16 11:59:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 11:59:17,831 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:17,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:17,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:59:17,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:17,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1558868838, now seen corresponding path program 1 times [2022-10-16 11:59:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:17,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43966997] [2022-10-16 11:59:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:17,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43966997] [2022-10-16 11:59:17,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43966997] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:17,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:17,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559815870] [2022-10-16 11:59:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:17,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:17,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:17,975 INFO L87 Difference]: Start difference. First operand 115 states and 134 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-10-16 11:59:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:18,000 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2022-10-16 11:59:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:18,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 [2022-10-16 11:59:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:18,002 INFO L225 Difference]: With dead ends: 115 [2022-10-16 11:59:18,003 INFO L226 Difference]: Without dead ends: 114 [2022-10-16 11:59:18,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:18,005 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:18,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 249 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-16 11:59:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-10-16 11:59:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 81 states have (on average 1.617283950617284) internal successors, (131), 112 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2022-10-16 11:59:18,018 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 12 [2022-10-16 11:59:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:18,019 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2022-10-16 11:59:18,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-10-16 11:59:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2022-10-16 11:59:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 11:59:18,020 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:18,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:18,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 11:59:18,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1080293384, now seen corresponding path program 1 times [2022-10-16 11:59:18,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:18,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763133255] [2022-10-16 11:59:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:18,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:18,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:18,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763133255] [2022-10-16 11:59:18,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763133255] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:18,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:18,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:18,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311840135] [2022-10-16 11:59:18,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:18,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:18,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:18,117 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-10-16 11:59:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:18,134 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2022-10-16 11:59:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:18,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-10-16 11:59:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:18,136 INFO L225 Difference]: With dead ends: 114 [2022-10-16 11:59:18,137 INFO L226 Difference]: Without dead ends: 109 [2022-10-16 11:59:18,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:18,139 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:18,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:18,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-10-16 11:59:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-10-16 11:59:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.6363636363636365) internal successors, (126), 107 states have internal predecessors, (126), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2022-10-16 11:59:18,150 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 13 [2022-10-16 11:59:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:18,151 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2022-10-16 11:59:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-10-16 11:59:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2022-10-16 11:59:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 11:59:18,152 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:18,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:18,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 11:59:18,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __ieee754_sqrtErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:18,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash 320944585, now seen corresponding path program 1 times [2022-10-16 11:59:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:18,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197129472] [2022-10-16 11:59:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:18,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:18,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197129472] [2022-10-16 11:59:18,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197129472] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:18,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:18,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997728616] [2022-10-16 11:59:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:18,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:18,215 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:18,234 INFO L93 Difference]: Finished difference Result 209 states and 246 transitions. [2022-10-16 11:59:18,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:18,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-16 11:59:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:18,237 INFO L225 Difference]: With dead ends: 209 [2022-10-16 11:59:18,237 INFO L226 Difference]: Without dead ends: 112 [2022-10-16 11:59:18,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:18,240 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:18,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 248 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-10-16 11:59:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-10-16 11:59:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 80 states have (on average 1.6125) internal successors, (129), 110 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2022-10-16 11:59:18,252 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 20 [2022-10-16 11:59:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:18,253 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2022-10-16 11:59:18,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2022-10-16 11:59:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 11:59:18,254 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:18,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:18,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 11:59:18,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ieee754_sqrtErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash 426940235, now seen corresponding path program 1 times [2022-10-16 11:59:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:18,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038673103] [2022-10-16 11:59:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:18,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:18,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:18,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038673103] [2022-10-16 11:59:18,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038673103] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:18,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:18,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:18,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450070551] [2022-10-16 11:59:18,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:18,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:18,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:18,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:18,489 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:18,739 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2022-10-16 11:59:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:59:18,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-16 11:59:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:18,742 INFO L225 Difference]: With dead ends: 187 [2022-10-16 11:59:18,742 INFO L226 Difference]: Without dead ends: 185 [2022-10-16 11:59:18,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:59:18,745 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 224 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:18,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 170 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:59:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-10-16 11:59:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 112. [2022-10-16 11:59:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 81 states have (on average 1.5925925925925926) internal successors, (129), 110 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2022-10-16 11:59:18,758 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 20 [2022-10-16 11:59:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:18,759 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2022-10-16 11:59:18,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2022-10-16 11:59:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 11:59:18,760 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:18,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:18,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 11:59:18,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ieee754_sqrtErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:18,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash 350245514, now seen corresponding path program 1 times [2022-10-16 11:59:18,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:18,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353222876] [2022-10-16 11:59:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:18,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:18,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353222876] [2022-10-16 11:59:18,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353222876] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:18,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:18,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:18,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065776601] [2022-10-16 11:59:18,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:18,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:18,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:18,864 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:19,067 INFO L93 Difference]: Finished difference Result 298 states and 354 transitions. [2022-10-16 11:59:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:59:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-16 11:59:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:19,071 INFO L225 Difference]: With dead ends: 298 [2022-10-16 11:59:19,071 INFO L226 Difference]: Without dead ends: 212 [2022-10-16 11:59:19,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:59:19,083 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 124 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:19,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 278 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:59:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-16 11:59:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 154. [2022-10-16 11:59:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.6260162601626016) internal successors, (200), 152 states have internal predecessors, (200), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 202 transitions. [2022-10-16 11:59:19,122 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 202 transitions. Word has length 21 [2022-10-16 11:59:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:19,126 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 202 transitions. [2022-10-16 11:59:19,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 202 transitions. [2022-10-16 11:59:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:59:19,128 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:19,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:19,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 11:59:19,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ieee754_sqrtErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1011950948, now seen corresponding path program 1 times [2022-10-16 11:59:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:19,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607186743] [2022-10-16 11:59:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:19,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:19,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607186743] [2022-10-16 11:59:19,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607186743] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:19,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:19,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:19,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431480948] [2022-10-16 11:59:19,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:19,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:19,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:19,391 INFO L87 Difference]: Start difference. First operand 154 states and 202 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:19,583 INFO L93 Difference]: Finished difference Result 199 states and 235 transitions. [2022-10-16 11:59:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:59:19,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:59:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:19,589 INFO L225 Difference]: With dead ends: 199 [2022-10-16 11:59:19,590 INFO L226 Difference]: Without dead ends: 198 [2022-10-16 11:59:19,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:59:19,598 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 112 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:19,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 278 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:59:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-10-16 11:59:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 153. [2022-10-16 11:59:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 122 states have (on average 1.6311475409836065) internal successors, (199), 151 states have internal predecessors, (199), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2022-10-16 11:59:19,628 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 23 [2022-10-16 11:59:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:19,629 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2022-10-16 11:59:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2022-10-16 11:59:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:59:19,634 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:19,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 11:59:19,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ieee754_sqrtErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1532818255, now seen corresponding path program 1 times [2022-10-16 11:59:19,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:19,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58251398] [2022-10-16 11:59:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:19,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:19,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58251398] [2022-10-16 11:59:19,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58251398] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:19,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:19,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:19,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953678696] [2022-10-16 11:59:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:19,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:19,735 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:19,782 INFO L93 Difference]: Finished difference Result 268 states and 357 transitions. [2022-10-16 11:59:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:19,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:59:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:19,786 INFO L225 Difference]: With dead ends: 268 [2022-10-16 11:59:19,786 INFO L226 Difference]: Without dead ends: 264 [2022-10-16 11:59:19,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:19,790 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 89 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:19,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 303 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-10-16 11:59:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2022-10-16 11:59:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 129 states have (on average 1.62015503875969) internal successors, (209), 158 states have internal predecessors, (209), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2022-10-16 11:59:19,802 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 23 [2022-10-16 11:59:19,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:19,802 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2022-10-16 11:59:19,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2022-10-16 11:59:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 11:59:19,809 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:19,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 11:59:19,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash 272727385, now seen corresponding path program 1 times [2022-10-16 11:59:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:19,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532695661] [2022-10-16 11:59:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:19,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:19,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532695661] [2022-10-16 11:59:19,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532695661] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:19,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:19,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:19,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515098253] [2022-10-16 11:59:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:19,912 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:19,968 INFO L93 Difference]: Finished difference Result 264 states and 353 transitions. [2022-10-16 11:59:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-16 11:59:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:19,971 INFO L225 Difference]: With dead ends: 264 [2022-10-16 11:59:19,971 INFO L226 Difference]: Without dead ends: 262 [2022-10-16 11:59:19,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:59:19,973 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 88 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:19,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 489 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:19,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-10-16 11:59:19,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 163. [2022-10-16 11:59:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 132 states have (on average 1.606060606060606) internal successors, (212), 161 states have internal predecessors, (212), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 214 transitions. [2022-10-16 11:59:19,985 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 214 transitions. Word has length 24 [2022-10-16 11:59:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:19,986 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 214 transitions. [2022-10-16 11:59:19,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 214 transitions. [2022-10-16 11:59:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:59:19,990 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:19,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:19,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 11:59:19,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ieee754_sqrtErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -135436207, now seen corresponding path program 1 times [2022-10-16 11:59:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:19,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719535209] [2022-10-16 11:59:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:20,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719535209] [2022-10-16 11:59:20,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719535209] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:20,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:20,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711510226] [2022-10-16 11:59:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:20,080 INFO L87 Difference]: Start difference. First operand 163 states and 214 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:20,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:20,173 INFO L93 Difference]: Finished difference Result 207 states and 244 transitions. [2022-10-16 11:59:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:20,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-10-16 11:59:20,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:20,176 INFO L225 Difference]: With dead ends: 207 [2022-10-16 11:59:20,176 INFO L226 Difference]: Without dead ends: 204 [2022-10-16 11:59:20,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:20,178 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 87 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:20,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 305 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-10-16 11:59:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 169. [2022-10-16 11:59:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 138 states have (on average 1.5797101449275361) internal successors, (218), 167 states have internal predecessors, (218), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:20,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 220 transitions. [2022-10-16 11:59:20,197 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 220 transitions. Word has length 25 [2022-10-16 11:59:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:20,198 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 220 transitions. [2022-10-16 11:59:20,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 220 transitions. [2022-10-16 11:59:20,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:59:20,202 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:20,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:20,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 11:59:20,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:20,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2051707406, now seen corresponding path program 1 times [2022-10-16 11:59:20,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:20,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020530859] [2022-10-16 11:59:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:20,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:20,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:20,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020530859] [2022-10-16 11:59:20,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020530859] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:20,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728725072] [2022-10-16 11:59:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:20,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:59:20,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 11:59:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:20,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:59:20,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:20,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:59:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:20,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728725072] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:59:20,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:59:20,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-16 11:59:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684407766] [2022-10-16 11:59:20,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:59:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:59:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:59:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:20,591 INFO L87 Difference]: Start difference. First operand 169 states and 220 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:20,699 INFO L93 Difference]: Finished difference Result 283 states and 337 transitions. [2022-10-16 11:59:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:59:20,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-16 11:59:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:20,702 INFO L225 Difference]: With dead ends: 283 [2022-10-16 11:59:20,702 INFO L226 Difference]: Without dead ends: 282 [2022-10-16 11:59:20,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:20,703 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 145 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:20,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 449 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-10-16 11:59:20,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 178. [2022-10-16 11:59:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 147 states have (on average 1.564625850340136) internal successors, (230), 176 states have internal predecessors, (230), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 232 transitions. [2022-10-16 11:59:20,716 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 232 transitions. Word has length 27 [2022-10-16 11:59:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:20,716 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 232 transitions. [2022-10-16 11:59:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 232 transitions. [2022-10-16 11:59:20,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:59:20,717 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:20,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:20,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 11:59:20,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 11:59:20,934 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __ieee754_sqrtErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:20,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1256503405, now seen corresponding path program 1 times [2022-10-16 11:59:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:20,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744796021] [2022-10-16 11:59:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:21,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:21,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744796021] [2022-10-16 11:59:21,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744796021] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:21,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475901492] [2022-10-16 11:59:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:21,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:21,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:21,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:59:21,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 11:59:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:21,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:59:21,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:21,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:59:21,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475901492] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:21,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:59:21,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-16 11:59:21,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368270599] [2022-10-16 11:59:21,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:21,188 INFO L87 Difference]: Start difference. First operand 178 states and 232 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:21,235 INFO L93 Difference]: Finished difference Result 271 states and 364 transitions. [2022-10-16 11:59:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:21,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-16 11:59:21,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:21,238 INFO L225 Difference]: With dead ends: 271 [2022-10-16 11:59:21,238 INFO L226 Difference]: Without dead ends: 269 [2022-10-16 11:59:21,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:59:21,239 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 92 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:21,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 474 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-10-16 11:59:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 175. [2022-10-16 11:59:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 146 states have (on average 1.5547945205479452) internal successors, (227), 173 states have internal predecessors, (227), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 229 transitions. [2022-10-16 11:59:21,251 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 229 transitions. Word has length 27 [2022-10-16 11:59:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:21,252 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 229 transitions. [2022-10-16 11:59:21,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 229 transitions. [2022-10-16 11:59:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:59:21,253 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:21,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:21,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 11:59:21,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 11:59:21,470 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __ieee754_sqrtErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:21,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash -296899789, now seen corresponding path program 1 times [2022-10-16 11:59:21,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:21,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101538455] [2022-10-16 11:59:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:21,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:21,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101538455] [2022-10-16 11:59:21,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101538455] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:21,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210424216] [2022-10-16 11:59:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:21,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:21,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:21,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:59:21,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 11:59:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:21,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:59:21,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:21,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:59:21,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210424216] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:21,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:59:21,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-10-16 11:59:21,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778631881] [2022-10-16 11:59:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:21,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 11:59:21,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 11:59:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:21,689 INFO L87 Difference]: Start difference. First operand 175 states and 229 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:21,765 INFO L93 Difference]: Finished difference Result 368 states and 498 transitions. [2022-10-16 11:59:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:59:21,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-16 11:59:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:21,768 INFO L225 Difference]: With dead ends: 368 [2022-10-16 11:59:21,768 INFO L226 Difference]: Without dead ends: 365 [2022-10-16 11:59:21,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:59:21,769 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 175 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:21,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 810 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-10-16 11:59:21,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 166. [2022-10-16 11:59:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.542857142857143) internal successors, (216), 164 states have internal predecessors, (216), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2022-10-16 11:59:21,781 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 28 [2022-10-16 11:59:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:21,781 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2022-10-16 11:59:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2022-10-16 11:59:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:59:21,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:21,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:21,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 11:59:21,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:21,999 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash -296898155, now seen corresponding path program 1 times [2022-10-16 11:59:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:22,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863515701] [2022-10-16 11:59:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:22,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863515701] [2022-10-16 11:59:22,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863515701] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:22,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970031197] [2022-10-16 11:59:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:22,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:22,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:22,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:59:22,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 11:59:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:22,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:59:22,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:22,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:59:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:22,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970031197] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:59:22,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:59:22,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:59:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829950336] [2022-10-16 11:59:22,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:59:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:59:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:59:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:59:22,287 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:22,450 INFO L93 Difference]: Finished difference Result 600 states and 813 transitions. [2022-10-16 11:59:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:59:22,451 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-16 11:59:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:22,455 INFO L225 Difference]: With dead ends: 600 [2022-10-16 11:59:22,455 INFO L226 Difference]: Without dead ends: 599 [2022-10-16 11:59:22,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-10-16 11:59:22,457 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 524 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:22,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1080 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:22,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-10-16 11:59:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 178. [2022-10-16 11:59:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 152 states have (on average 1.519736842105263) internal successors, (231), 176 states have internal predecessors, (231), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 233 transitions. [2022-10-16 11:59:22,473 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 233 transitions. Word has length 28 [2022-10-16 11:59:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:22,473 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 233 transitions. [2022-10-16 11:59:22,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 233 transitions. [2022-10-16 11:59:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:59:22,475 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:22,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:22,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 11:59:22,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 11:59:22,689 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __ieee754_sqrtErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -140465576, now seen corresponding path program 1 times [2022-10-16 11:59:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:22,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736303587] [2022-10-16 11:59:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:22,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:22,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736303587] [2022-10-16 11:59:22,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736303587] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:22,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:22,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 11:59:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293264056] [2022-10-16 11:59:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:59:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:59:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:59:22,812 INFO L87 Difference]: Start difference. First operand 178 states and 233 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:22,954 INFO L93 Difference]: Finished difference Result 344 states and 412 transitions. [2022-10-16 11:59:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:59:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-10-16 11:59:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:22,956 INFO L225 Difference]: With dead ends: 344 [2022-10-16 11:59:22,957 INFO L226 Difference]: Without dead ends: 341 [2022-10-16 11:59:22,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:59:22,958 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 393 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:22,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 411 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-10-16 11:59:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 223. [2022-10-16 11:59:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.5482233502538072) internal successors, (305), 221 states have internal predecessors, (305), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 307 transitions. [2022-10-16 11:59:22,973 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 307 transitions. Word has length 29 [2022-10-16 11:59:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:22,973 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 307 transitions. [2022-10-16 11:59:22,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 307 transitions. [2022-10-16 11:59:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:59:22,974 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:22,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:22,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-16 11:59:22,975 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __ieee754_sqrtErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -613958763, now seen corresponding path program 1 times [2022-10-16 11:59:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:22,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787187958] [2022-10-16 11:59:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:23,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:23,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787187958] [2022-10-16 11:59:23,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787187958] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:23,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413690172] [2022-10-16 11:59:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:23,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:23,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:59:23,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 11:59:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:23,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:59:23,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:23,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:59:23,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413690172] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:23,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:59:23,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-10-16 11:59:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913628292] [2022-10-16 11:59:23,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:59:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:59:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:59:23,276 INFO L87 Difference]: Start difference. First operand 223 states and 307 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:23,431 INFO L93 Difference]: Finished difference Result 342 states and 450 transitions. [2022-10-16 11:59:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:59:23,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-10-16 11:59:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:23,434 INFO L225 Difference]: With dead ends: 342 [2022-10-16 11:59:23,435 INFO L226 Difference]: Without dead ends: 339 [2022-10-16 11:59:23,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:59:23,436 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 231 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:23,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 496 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:23,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-10-16 11:59:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 223. [2022-10-16 11:59:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 198 states have (on average 1.5454545454545454) internal successors, (306), 221 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 308 transitions. [2022-10-16 11:59:23,452 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 308 transitions. Word has length 29 [2022-10-16 11:59:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:23,453 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 308 transitions. [2022-10-16 11:59:23,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 308 transitions. [2022-10-16 11:59:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:59:23,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:23,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:23,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 11:59:23,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 11:59:23,669 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __ieee754_sqrtErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash -59465443, now seen corresponding path program 1 times [2022-10-16 11:59:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:23,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999837314] [2022-10-16 11:59:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:23,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:23,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:23,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999837314] [2022-10-16 11:59:23,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999837314] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:23,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:23,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 11:59:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268562152] [2022-10-16 11:59:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:23,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:59:23,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:59:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:59:23,859 INFO L87 Difference]: Start difference. First operand 223 states and 308 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:23,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:23,947 INFO L93 Difference]: Finished difference Result 270 states and 344 transitions. [2022-10-16 11:59:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:59:23,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 11:59:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:23,949 INFO L225 Difference]: With dead ends: 270 [2022-10-16 11:59:23,950 INFO L226 Difference]: Without dead ends: 269 [2022-10-16 11:59:23,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:59:23,951 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 89 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:23,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 357 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-10-16 11:59:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 227. [2022-10-16 11:59:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 202 states have (on average 1.5346534653465347) internal successors, (310), 225 states have internal predecessors, (310), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 312 transitions. [2022-10-16 11:59:23,966 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 312 transitions. Word has length 30 [2022-10-16 11:59:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:23,966 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 312 transitions. [2022-10-16 11:59:23,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 312 transitions. [2022-10-16 11:59:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:59:23,968 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:23,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:23,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 11:59:23,968 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __ieee754_sqrtErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:23,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1852852363, now seen corresponding path program 1 times [2022-10-16 11:59:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:23,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887829244] [2022-10-16 11:59:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:59:24,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:24,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887829244] [2022-10-16 11:59:24,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887829244] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:24,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:24,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:24,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840495958] [2022-10-16 11:59:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:24,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:24,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:24,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:24,036 INFO L87 Difference]: Start difference. First operand 227 states and 312 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:24,111 INFO L93 Difference]: Finished difference Result 269 states and 343 transitions. [2022-10-16 11:59:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:24,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 11:59:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:24,113 INFO L225 Difference]: With dead ends: 269 [2022-10-16 11:59:24,113 INFO L226 Difference]: Without dead ends: 268 [2022-10-16 11:59:24,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:24,114 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 73 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:24,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 268 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:24,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-10-16 11:59:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 249. [2022-10-16 11:59:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 224 states have (on average 1.5044642857142858) internal successors, (337), 247 states have internal predecessors, (337), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 339 transitions. [2022-10-16 11:59:24,132 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 339 transitions. Word has length 30 [2022-10-16 11:59:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:24,132 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 339 transitions. [2022-10-16 11:59:24,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 339 transitions. [2022-10-16 11:59:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:59:24,133 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:24,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:24,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-16 11:59:24,134 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __ieee754_sqrtErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash 58538952, now seen corresponding path program 1 times [2022-10-16 11:59:24,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:24,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502138514] [2022-10-16 11:59:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:24,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502138514] [2022-10-16 11:59:24,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502138514] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:24,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:24,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:59:24,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890496384] [2022-10-16 11:59:24,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:24,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:59:24,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:59:24,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:24,979 INFO L87 Difference]: Start difference. First operand 249 states and 339 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:25,432 INFO L93 Difference]: Finished difference Result 277 states and 377 transitions. [2022-10-16 11:59:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:59:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 11:59:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:25,435 INFO L225 Difference]: With dead ends: 277 [2022-10-16 11:59:25,435 INFO L226 Difference]: Without dead ends: 276 [2022-10-16 11:59:25,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:59:25,436 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 17 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:25,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 414 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 11:59:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-10-16 11:59:25,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 258. [2022-10-16 11:59:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 233 states have (on average 1.5107296137339057) internal successors, (352), 256 states have internal predecessors, (352), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 354 transitions. [2022-10-16 11:59:25,461 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 354 transitions. Word has length 30 [2022-10-16 11:59:25,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:25,461 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 354 transitions. [2022-10-16 11:59:25,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 354 transitions. [2022-10-16 11:59:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 11:59:25,462 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:25,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:25,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 11:59:25,463 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __ieee754_sqrtErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1370861112, now seen corresponding path program 1 times [2022-10-16 11:59:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:25,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127405572] [2022-10-16 11:59:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:25,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:25,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127405572] [2022-10-16 11:59:25,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127405572] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:25,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63211282] [2022-10-16 11:59:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:25,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:25,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:25,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:59:25,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 11:59:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:25,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:59:25,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:25,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:59:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:25,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63211282] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:59:25,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:59:25,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-10-16 11:59:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549934893] [2022-10-16 11:59:25,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:59:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 11:59:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 11:59:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:59:25,806 INFO L87 Difference]: Start difference. First operand 258 states and 354 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:26,061 INFO L93 Difference]: Finished difference Result 411 states and 519 transitions. [2022-10-16 11:59:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 11:59:26,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-10-16 11:59:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:26,065 INFO L225 Difference]: With dead ends: 411 [2022-10-16 11:59:26,065 INFO L226 Difference]: Without dead ends: 409 [2022-10-16 11:59:26,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2022-10-16 11:59:26,066 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 608 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:26,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 555 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:59:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-10-16 11:59:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 267. [2022-10-16 11:59:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 242 states have (on average 1.4958677685950412) internal successors, (362), 265 states have internal predecessors, (362), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 364 transitions. [2022-10-16 11:59:26,088 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 364 transitions. Word has length 31 [2022-10-16 11:59:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:26,088 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 364 transitions. [2022-10-16 11:59:26,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 364 transitions. [2022-10-16 11:59:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 11:59:26,090 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:26,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:26,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 11:59:26,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:26,305 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __ieee754_sqrtErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:26,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:26,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1814707673, now seen corresponding path program 1 times [2022-10-16 11:59:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:26,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737196562] [2022-10-16 11:59:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:26,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737196562] [2022-10-16 11:59:26,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737196562] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:26,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012244418] [2022-10-16 11:59:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:26,378 INFO L87 Difference]: Start difference. First operand 267 states and 364 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:26,467 INFO L93 Difference]: Finished difference Result 267 states and 364 transitions. [2022-10-16 11:59:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-10-16 11:59:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:26,470 INFO L225 Difference]: With dead ends: 267 [2022-10-16 11:59:26,470 INFO L226 Difference]: Without dead ends: 265 [2022-10-16 11:59:26,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:26,471 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 9 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:26,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 184 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:26,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-10-16 11:59:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-10-16 11:59:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 242 states have (on average 1.4710743801652892) internal successors, (356), 263 states have internal predecessors, (356), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 358 transitions. [2022-10-16 11:59:26,511 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 358 transitions. Word has length 31 [2022-10-16 11:59:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:26,511 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 358 transitions. [2022-10-16 11:59:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 358 transitions. [2022-10-16 11:59:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 11:59:26,512 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:26,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:26,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-16 11:59:26,514 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __ieee754_sqrtErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 419892814, now seen corresponding path program 1 times [2022-10-16 11:59:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287558865] [2022-10-16 11:59:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:26,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:26,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287558865] [2022-10-16 11:59:26,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287558865] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:26,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:26,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:26,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385989020] [2022-10-16 11:59:26,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:26,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:26,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:26,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:26,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:26,646 INFO L87 Difference]: Start difference. First operand 265 states and 358 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:26,697 INFO L93 Difference]: Finished difference Result 371 states and 515 transitions. [2022-10-16 11:59:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:26,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-10-16 11:59:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:26,700 INFO L225 Difference]: With dead ends: 371 [2022-10-16 11:59:26,700 INFO L226 Difference]: Without dead ends: 271 [2022-10-16 11:59:26,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:26,701 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:26,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 221 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-10-16 11:59:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 265. [2022-10-16 11:59:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 242 states have (on average 1.4586776859504131) internal successors, (353), 263 states have internal predecessors, (353), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 355 transitions. [2022-10-16 11:59:26,723 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 355 transitions. Word has length 32 [2022-10-16 11:59:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:26,723 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 355 transitions. [2022-10-16 11:59:26,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 355 transitions. [2022-10-16 11:59:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:59:26,725 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:26,725 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:26,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-10-16 11:59:26,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __ieee754_sqrtErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:26,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:26,726 INFO L85 PathProgramCache]: Analyzing trace with hash 183069748, now seen corresponding path program 1 times [2022-10-16 11:59:26,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:26,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790808735] [2022-10-16 11:59:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:26,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:27,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:27,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790808735] [2022-10-16 11:59:27,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790808735] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:27,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:27,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 11:59:27,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074172244] [2022-10-16 11:59:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:27,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:59:27,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:59:27,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:27,514 INFO L87 Difference]: Start difference. First operand 265 states and 355 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:27,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:27,916 INFO L93 Difference]: Finished difference Result 323 states and 427 transitions. [2022-10-16 11:59:27,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:59:27,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-10-16 11:59:27,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:27,919 INFO L225 Difference]: With dead ends: 323 [2022-10-16 11:59:27,919 INFO L226 Difference]: Without dead ends: 274 [2022-10-16 11:59:27,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:59:27,920 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 11 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:27,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 417 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 11:59:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-10-16 11:59:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-10-16 11:59:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 251 states have (on average 1.450199203187251) internal successors, (364), 272 states have internal predecessors, (364), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 366 transitions. [2022-10-16 11:59:27,942 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 366 transitions. Word has length 33 [2022-10-16 11:59:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:27,942 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 366 transitions. [2022-10-16 11:59:27,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:59:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 366 transitions. [2022-10-16 11:59:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:59:27,944 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:27,944 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:27,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-16 11:59:27,945 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __ieee754_sqrtErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [__ieee754_sqrtErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __ieee754_sqrtErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2022-10-16 11:59:27,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash 992416374, now seen corresponding path program 1 times [2022-10-16 11:59:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:27,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247493994] [2022-10-16 11:59:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:30,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:30,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247493994] [2022-10-16 11:59:30,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247493994] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:30,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165676521] [2022-10-16 11:59:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:30,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:30,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:30,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:59:30,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 11:59:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:31,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 11:59:31,709 INFO L286 TraceCheckSpWp]: Computing forward predicates...