/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_0480.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:59:11,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:59:11,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:59:11,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:59:11,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:59:11,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:59:11,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:59:11,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:59:11,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:59:11,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:59:11,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:59:11,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:59:11,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:59:11,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:59:11,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:59:11,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:59:11,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:59:11,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:59:11,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:59:11,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:59:11,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:59:12,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:59:12,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:59:12,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:59:12,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:59:12,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:59:12,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:59:12,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:59:12,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:59:12,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:59:12,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:59:12,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:59:12,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:59:12,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:59:12,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:59:12,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:59:12,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:59:12,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:59:12,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:59:12,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:59:12,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:59:12,039 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 11:59:12,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:59:12,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:59:12,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:59:12,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:59:12,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:59:12,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:59:12,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:59:12,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:59:12,106 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:59:12,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:59:12,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:59:12,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:59:12,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:59:12,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:59:12,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:59:12,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:59:12,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:59:12,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:59:12,110 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:59:12,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:59:12,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:59:12,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:59:12,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:59:12,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:59:12,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:59:12,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:59:12,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:59:12,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:59:12,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:59:12,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:59:12,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:59:12,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:59:12,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:59:12,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:59:12,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:59:12,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:59:12,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:59:12,550 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:59:12,552 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:59:12,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0480.c [2022-10-16 11:59:12,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2be780b/139f04a6a2a94a0498f65654787a2ba4/FLAG8628c3cbc [2022-10-16 11:59:13,332 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:59:13,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0480.c [2022-10-16 11:59:13,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2be780b/139f04a6a2a94a0498f65654787a2ba4/FLAG8628c3cbc [2022-10-16 11:59:13,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2be780b/139f04a6a2a94a0498f65654787a2ba4 [2022-10-16 11:59:13,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:59:13,707 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:59:13,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:59:13,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:59:13,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:59:13,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:59:13" (1/1) ... [2022-10-16 11:59:13,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0e146f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:13, skipping insertion in model container [2022-10-16 11:59:13,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:59:13" (1/1) ... [2022-10-16 11:59:13,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:59:13,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:59:14,095 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_0480.c[5882,5895] [2022-10-16 11:59:14,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:59:14,105 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:59:14,162 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_0480.c[5882,5895] [2022-10-16 11:59:14,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:59:14,180 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:59:14,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14 WrapperNode [2022-10-16 11:59:14,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:59:14,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:59:14,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:59:14,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:59:14,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,240 INFO L138 Inliner]: procedures = 17, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 163 [2022-10-16 11:59:14,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:59:14,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:59:14,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:59:14,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:59:14,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,313 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:59:14,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:59:14,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:59:14,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:59:14,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (1/1) ... [2022-10-16 11:59:14,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:59:14,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:14,383 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 11:59:14,405 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 11:59:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:59:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:59:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:59:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-16 11:59:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:59:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2022-10-16 11:59:14,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2022-10-16 11:59:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-16 11:59:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:59:14,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:59:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:59:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:59:14,584 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:59:14,587 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:59:15,357 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:59:15,367 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:59:15,367 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-16 11:59:15,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:59:15 BoogieIcfgContainer [2022-10-16 11:59:15,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:59:15,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:59:15,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:59:15,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:59:15,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:59:13" (1/3) ... [2022-10-16 11:59:15,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c2972f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:59:15, skipping insertion in model container [2022-10-16 11:59:15,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:59:14" (2/3) ... [2022-10-16 11:59:15,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c2972f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:59:15, skipping insertion in model container [2022-10-16 11:59:15,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:59:15" (3/3) ... [2022-10-16 11:59:15,380 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0480.c [2022-10-16 11:59:15,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:59:15,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-10-16 11:59:15,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:59:15,472 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;@5099081f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:59:15,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-10-16 11:59:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 102 states have (on average 1.8235294117647058) internal successors, (186), 134 states have internal predecessors, (186), 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 11:59:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 11:59:15,487 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:15,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:15,488 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 11:59:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:15,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1470449537, now seen corresponding path program 1 times [2022-10-16 11:59:15,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:15,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429518737] [2022-10-16 11:59:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:15,675 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 11:59:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:15,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429518737] [2022-10-16 11:59:15,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429518737] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:15,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:15,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279289394] [2022-10-16 11:59:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:15,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:59:15,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:59:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:59:15,724 INFO L87 Difference]: Start difference. First operand has 138 states, 102 states have (on average 1.8235294117647058) internal successors, (186), 134 states have internal predecessors, (186), 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 11:59:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:15,769 INFO L93 Difference]: Finished difference Result 274 states and 380 transitions. [2022-10-16 11:59:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:59:15,772 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 11:59:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:15,783 INFO L225 Difference]: With dead ends: 274 [2022-10-16 11:59:15,783 INFO L226 Difference]: Without dead ends: 115 [2022-10-16 11:59:15,790 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 11:59:15,794 INFO L413 NwaCegarLoop]: 168 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, 168 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 11:59:15,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:59:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-16 11:59:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-10-16 11:59:15,844 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 11:59:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2022-10-16 11:59:15,849 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 7 [2022-10-16 11:59:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:15,849 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2022-10-16 11:59:15,850 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 11:59:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2022-10-16 11:59:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 11:59:15,851 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:15,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:15,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:59:15,852 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 11:59:15,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2099519409, now seen corresponding path program 1 times [2022-10-16 11:59:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:15,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752202110] [2022-10-16 11:59:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:15,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:16,056 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 11:59:16,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:16,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752202110] [2022-10-16 11:59:16,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752202110] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:16,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:16,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551355365] [2022-10-16 11:59:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:16,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:16,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:16,063 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 11:59:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:16,137 INFO L93 Difference]: Finished difference Result 222 states and 260 transitions. [2022-10-16 11:59:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:16,140 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 11:59:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:16,142 INFO L225 Difference]: With dead ends: 222 [2022-10-16 11:59:16,142 INFO L226 Difference]: Without dead ends: 115 [2022-10-16 11:59:16,146 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 11:59:16,148 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 11:59:16,149 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 11:59:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-16 11:59:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-10-16 11:59:16,169 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 11:59:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2022-10-16 11:59:16,175 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 9 [2022-10-16 11:59:16,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:16,176 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2022-10-16 11:59:16,176 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 11:59:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2022-10-16 11:59:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 11:59:16,180 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:16,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:16,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:59:16,181 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 11:59:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1558868838, now seen corresponding path program 1 times [2022-10-16 11:59:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:16,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013781326] [2022-10-16 11:59:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:16,294 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 11:59:16,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:16,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013781326] [2022-10-16 11:59:16,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013781326] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:16,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:16,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:16,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865849082] [2022-10-16 11:59:16,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:16,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:16,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:16,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:16,298 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 11:59:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:16,317 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2022-10-16 11:59:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:16,318 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 11:59:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:16,319 INFO L225 Difference]: With dead ends: 115 [2022-10-16 11:59:16,319 INFO L226 Difference]: Without dead ends: 114 [2022-10-16 11:59:16,320 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 11:59:16,321 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 11:59:16,322 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 11:59:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-16 11:59:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-10-16 11:59:16,331 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 11:59:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2022-10-16 11:59:16,332 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 12 [2022-10-16 11:59:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:16,333 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2022-10-16 11:59:16,333 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 11:59:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2022-10-16 11:59:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 11:59:16,334 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:16,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 11:59:16,335 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 11:59:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1080293384, now seen corresponding path program 1 times [2022-10-16 11:59:16,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641804745] [2022-10-16 11:59:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:16,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:16,489 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 11:59:16,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:16,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641804745] [2022-10-16 11:59:16,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641804745] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:16,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:16,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825100673] [2022-10-16 11:59:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:16,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:16,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:16,494 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 11:59:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:16,517 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2022-10-16 11:59:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:16,518 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 11:59:16,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:16,522 INFO L225 Difference]: With dead ends: 114 [2022-10-16 11:59:16,522 INFO L226 Difference]: Without dead ends: 109 [2022-10-16 11:59:16,523 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 11:59:16,524 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 11:59:16,527 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 11:59:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-10-16 11:59:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-10-16 11:59:16,542 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 11:59:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2022-10-16 11:59:16,543 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 13 [2022-10-16 11:59:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:16,543 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2022-10-16 11:59:16,544 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 11:59:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2022-10-16 11:59:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 11:59:16,545 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:16,546 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 11:59:16,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 11:59:16,546 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 11:59:16,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash 339048156, now seen corresponding path program 1 times [2022-10-16 11:59:16,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:16,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757311801] [2022-10-16 11:59:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:16,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:16,638 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 11:59:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757311801] [2022-10-16 11:59:16,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757311801] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:16,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:16,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:16,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001257527] [2022-10-16 11:59:16,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:16,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:16,642 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 11:59:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:16,658 INFO L93 Difference]: Finished difference Result 209 states and 246 transitions. [2022-10-16 11:59:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:16,659 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 11:59:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:16,660 INFO L225 Difference]: With dead ends: 209 [2022-10-16 11:59:16,660 INFO L226 Difference]: Without dead ends: 112 [2022-10-16 11:59:16,661 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 11:59:16,663 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 11:59:16,663 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 11:59:16,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-10-16 11:59:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-10-16 11:59:16,671 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 11:59:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2022-10-16 11:59:16,672 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 20 [2022-10-16 11:59:16,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:16,672 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2022-10-16 11:59:16,673 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 11:59:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2022-10-16 11:59:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 11:59:16,674 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:16,674 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 11:59:16,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 11:59:16,674 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 11:59:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash 445043806, now seen corresponding path program 1 times [2022-10-16 11:59:16,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:16,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875055312] [2022-10-16 11:59:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:16,836 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 11:59:16,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:16,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875055312] [2022-10-16 11:59:16,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875055312] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:16,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:16,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:16,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882820659] [2022-10-16 11:59:16,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:16,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:16,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:16,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:16,839 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 11:59:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:17,063 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2022-10-16 11:59:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:59:17,064 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 11:59:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:17,065 INFO L225 Difference]: With dead ends: 187 [2022-10-16 11:59:17,065 INFO L226 Difference]: Without dead ends: 185 [2022-10-16 11:59:17,066 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 11:59:17,068 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 11:59:17,068 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 11:59:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-10-16 11:59:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 112. [2022-10-16 11:59:17,078 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 11:59:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2022-10-16 11:59:17,079 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 20 [2022-10-16 11:59:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:17,079 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2022-10-16 11:59:17,080 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 11:59:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2022-10-16 11:59:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 11:59:17,081 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:17,081 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 11:59:17,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 11:59:17,081 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 11:59:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash 911456215, now seen corresponding path program 1 times [2022-10-16 11:59:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:17,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682531770] [2022-10-16 11:59:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:17,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:17,192 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 11:59:17,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:17,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682531770] [2022-10-16 11:59:17,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682531770] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:17,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:17,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914572208] [2022-10-16 11:59:17,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:17,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:17,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:17,196 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 11:59:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:17,417 INFO L93 Difference]: Finished difference Result 298 states and 354 transitions. [2022-10-16 11:59:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:59:17,418 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 11:59:17,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:17,419 INFO L225 Difference]: With dead ends: 298 [2022-10-16 11:59:17,419 INFO L226 Difference]: Without dead ends: 212 [2022-10-16 11:59:17,420 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 11:59:17,422 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 124 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 11:59:17,422 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 11:59:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-16 11:59:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 154. [2022-10-16 11:59:17,433 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 11:59:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 202 transitions. [2022-10-16 11:59:17,435 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 202 transitions. Word has length 21 [2022-10-16 11:59:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:17,435 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 202 transitions. [2022-10-16 11:59:17,436 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 11:59:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 202 transitions. [2022-10-16 11:59:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:59:17,441 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:17,441 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 11:59:17,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 11:59:17,442 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 11:59:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash -830444687, now seen corresponding path program 1 times [2022-10-16 11:59:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:17,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665288568] [2022-10-16 11:59:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:17,647 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 11:59:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:17,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665288568] [2022-10-16 11:59:17,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665288568] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:17,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:17,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:17,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279191594] [2022-10-16 11:59:17,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:17,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:17,651 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 11:59:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:17,813 INFO L93 Difference]: Finished difference Result 199 states and 235 transitions. [2022-10-16 11:59:17,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:59:17,813 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 11:59:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:17,815 INFO L225 Difference]: With dead ends: 199 [2022-10-16 11:59:17,816 INFO L226 Difference]: Without dead ends: 198 [2022-10-16 11:59:17,816 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 11:59:17,817 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, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:17,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 278 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-10-16 11:59:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 153. [2022-10-16 11:59:17,827 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 11:59:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2022-10-16 11:59:17,828 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 23 [2022-10-16 11:59:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:17,829 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2022-10-16 11:59:17,829 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 11:59:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2022-10-16 11:59:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:59:17,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 11:59:17,831 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 11:59:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash -309577380, now seen corresponding path program 1 times [2022-10-16 11:59:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:17,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020613144] [2022-10-16 11:59:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:17,887 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 11:59:17,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:17,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020613144] [2022-10-16 11:59:17,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020613144] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:17,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:17,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:17,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899617650] [2022-10-16 11:59:17,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:17,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:17,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:17,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:17,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:17,890 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 11:59:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:17,934 INFO L93 Difference]: Finished difference Result 268 states and 357 transitions. [2022-10-16 11:59:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:17,935 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 11:59:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:17,937 INFO L225 Difference]: With dead ends: 268 [2022-10-16 11:59:17,937 INFO L226 Difference]: Without dead ends: 264 [2022-10-16 11:59:17,938 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 11:59:17,939 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 11:59:17,939 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 11:59:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-10-16 11:59:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2022-10-16 11:59:17,947 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 11:59:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2022-10-16 11:59:17,949 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 23 [2022-10-16 11:59:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:17,949 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2022-10-16 11:59:17,950 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 11:59:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2022-10-16 11:59:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 11:59:17,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:17,951 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 11:59:17,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 11:59:17,952 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 11:59:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1006962452, now seen corresponding path program 1 times [2022-10-16 11:59:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:17,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79327119] [2022-10-16 11:59:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,028 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 11:59:18,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:18,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79327119] [2022-10-16 11:59:18,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79327119] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:18,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:18,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:18,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045295088] [2022-10-16 11:59:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:18,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:18,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:18,031 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 11:59:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:18,087 INFO L93 Difference]: Finished difference Result 264 states and 353 transitions. [2022-10-16 11:59:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:18,088 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 11:59:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:18,090 INFO L225 Difference]: With dead ends: 264 [2022-10-16 11:59:18,090 INFO L226 Difference]: Without dead ends: 262 [2022-10-16 11:59:18,090 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 11:59:18,091 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 11:59:18,092 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 11:59:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-10-16 11:59:18,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 163. [2022-10-16 11:59:18,100 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 11:59:18,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 214 transitions. [2022-10-16 11:59:18,101 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 214 transitions. Word has length 24 [2022-10-16 11:59:18,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:18,102 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 214 transitions. [2022-10-16 11:59:18,102 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 11:59:18,102 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 214 transitions. [2022-10-16 11:59:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:59:18,103 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:18,104 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 11:59:18,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 11:59:18,104 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 11:59:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1151115490, now seen corresponding path program 1 times [2022-10-16 11:59:18,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:18,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904525955] [2022-10-16 11:59:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,181 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 11:59:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904525955] [2022-10-16 11:59:18,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904525955] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:18,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:18,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:18,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624092102] [2022-10-16 11:59:18,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:18,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:18,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:18,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:18,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:18,184 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 11:59:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:18,275 INFO L93 Difference]: Finished difference Result 207 states and 244 transitions. [2022-10-16 11:59:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:18,279 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 11:59:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:18,281 INFO L225 Difference]: With dead ends: 207 [2022-10-16 11:59:18,281 INFO L226 Difference]: Without dead ends: 204 [2022-10-16 11:59:18,281 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 11:59:18,282 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 11:59:18,283 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 11:59:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-10-16 11:59:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 169. [2022-10-16 11:59:18,291 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 11:59:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 220 transitions. [2022-10-16 11:59:18,292 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 220 transitions. Word has length 25 [2022-10-16 11:59:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:18,293 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 220 transitions. [2022-10-16 11:59:18,293 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 11:59:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 220 transitions. [2022-10-16 11:59:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:59:18,294 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:18,295 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 11:59:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 11:59:18,295 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 11:59:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1133045119, now seen corresponding path program 1 times [2022-10-16 11:59:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:18,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81708524] [2022-10-16 11:59:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,447 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 11:59:18,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:18,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81708524] [2022-10-16 11:59:18,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81708524] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:18,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247809059] [2022-10-16 11:59:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:18,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:18,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:18,458 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 11:59:18,465 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 11:59:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:18,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:59:18,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:18,651 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 11:59:18,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:59:18,679 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 11:59:18,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247809059] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:59:18,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:59:18,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-16 11:59:18,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152318604] [2022-10-16 11:59:18,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:59:18,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:59:18,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:59:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:18,682 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 11:59:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:18,791 INFO L93 Difference]: Finished difference Result 283 states and 337 transitions. [2022-10-16 11:59:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:59:18,792 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 11:59:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:18,794 INFO L225 Difference]: With dead ends: 283 [2022-10-16 11:59:18,794 INFO L226 Difference]: Without dead ends: 282 [2022-10-16 11:59:18,795 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 11:59:18,795 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 304 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:18,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 347 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-10-16 11:59:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 178. [2022-10-16 11:59:18,806 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 11:59:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 232 transitions. [2022-10-16 11:59:18,808 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 232 transitions. Word has length 27 [2022-10-16 11:59:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:18,808 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 232 transitions. [2022-10-16 11:59:18,808 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 11:59:18,809 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 232 transitions. [2022-10-16 11:59:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:59:18,810 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:18,810 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 11:59:18,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 11:59:19,023 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 11:59:19,024 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 11:59:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1928249120, now seen corresponding path program 1 times [2022-10-16 11:59:19,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:19,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102796135] [2022-10-16 11:59:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:19,105 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 11:59:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:19,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102796135] [2022-10-16 11:59:19,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102796135] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:19,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087512108] [2022-10-16 11:59:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:19,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:19,107 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 11:59:19,135 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 11:59:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:19,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:59:19,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:19,245 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 11:59:19,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:59:19,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087512108] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:19,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:59:19,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-16 11:59:19,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129816063] [2022-10-16 11:59:19,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:19,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:19,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:19,248 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 11:59:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:19,293 INFO L93 Difference]: Finished difference Result 271 states and 364 transitions. [2022-10-16 11:59:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:19,294 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 11:59:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:19,296 INFO L225 Difference]: With dead ends: 271 [2022-10-16 11:59:19,297 INFO L226 Difference]: Without dead ends: 269 [2022-10-16 11:59:19,297 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 11:59:19,298 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 11:59:19,298 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 11:59:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-10-16 11:59:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 175. [2022-10-16 11:59:19,308 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 11:59:19,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 229 transitions. [2022-10-16 11:59:19,310 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 229 transitions. Word has length 27 [2022-10-16 11:59:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:19,310 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 229 transitions. [2022-10-16 11:59:19,311 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 11:59:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 229 transitions. [2022-10-16 11:59:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:59:19,312 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:19,312 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 11:59:19,355 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 11:59:19,527 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 11:59:19,527 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 11:59:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash -353819322, now seen corresponding path program 1 times [2022-10-16 11:59:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:19,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023853195] [2022-10-16 11:59:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:19,650 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 11:59:19,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:19,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023853195] [2022-10-16 11:59:19,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023853195] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:19,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973976405] [2022-10-16 11:59:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:19,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:19,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:19,655 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 11:59:19,684 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 11:59:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:19,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:59:19,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:19,823 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 11:59:19,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:59:19,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973976405] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:19,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:59:19,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-10-16 11:59:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198239483] [2022-10-16 11:59:19,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:19,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 11:59:19,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 11:59:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:19,828 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 11:59:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:19,920 INFO L93 Difference]: Finished difference Result 368 states and 498 transitions. [2022-10-16 11:59:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:59:19,921 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 11:59:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:19,924 INFO L225 Difference]: With dead ends: 368 [2022-10-16 11:59:19,924 INFO L226 Difference]: Without dead ends: 365 [2022-10-16 11:59:19,925 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 11:59:19,926 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 178 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:19,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 706 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-10-16 11:59:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 166. [2022-10-16 11:59:19,937 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 11:59:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2022-10-16 11:59:19,938 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 28 [2022-10-16 11:59:19,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:19,939 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2022-10-16 11:59:19,939 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 11:59:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2022-10-16 11:59:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:59:19,940 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:19,940 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 11:59:19,982 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 11:59:20,153 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 11:59:20,154 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 11:59:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash -353817688, now seen corresponding path program 1 times [2022-10-16 11:59:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:20,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751192782] [2022-10-16 11:59:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:20,249 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 11:59:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:20,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751192782] [2022-10-16 11:59:20,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751192782] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:20,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928162225] [2022-10-16 11:59:20,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:20,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:20,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:20,251 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 11:59:20,277 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 11:59:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:20,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:59:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:20,399 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 11:59:20,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:59:20,439 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 11:59:20,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928162225] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:59:20,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:59:20,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:59:20,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289892836] [2022-10-16 11:59:20,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:59:20,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:59:20,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:20,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:59:20,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:59:20,442 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 11:59:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:20,632 INFO L93 Difference]: Finished difference Result 600 states and 813 transitions. [2022-10-16 11:59:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:59:20,633 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 11:59:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:20,637 INFO L225 Difference]: With dead ends: 600 [2022-10-16 11:59:20,637 INFO L226 Difference]: Without dead ends: 599 [2022-10-16 11:59:20,637 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 11:59:20,638 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 783 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:20,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1343 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-10-16 11:59:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 178. [2022-10-16 11:59:20,654 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 11:59:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 233 transitions. [2022-10-16 11:59:20,655 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 233 transitions. Word has length 28 [2022-10-16 11:59:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:20,655 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 233 transitions. [2022-10-16 11:59:20,656 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 11:59:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 233 transitions. [2022-10-16 11:59:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:59:20,657 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:20,657 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 11:59:20,701 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 11:59:20,871 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 11:59:20,871 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 11:59:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1904971099, now seen corresponding path program 1 times [2022-10-16 11:59:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:20,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966817110] [2022-10-16 11:59:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:20,996 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 11:59:20,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:20,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966817110] [2022-10-16 11:59:20,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966817110] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:20,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:20,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 11:59:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742772048] [2022-10-16 11:59:20,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:20,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:59:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:59:20,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:59:20,998 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 11:59:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:21,145 INFO L93 Difference]: Finished difference Result 344 states and 412 transitions. [2022-10-16 11:59:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:59:21,146 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 11:59:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:21,148 INFO L225 Difference]: With dead ends: 344 [2022-10-16 11:59:21,148 INFO L226 Difference]: Without dead ends: 341 [2022-10-16 11:59:21,149 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 11:59:21,149 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 11:59:21,150 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 11:59:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-10-16 11:59:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 223. [2022-10-16 11:59:21,165 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 11:59:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 307 transitions. [2022-10-16 11:59:21,166 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 307 transitions. Word has length 29 [2022-10-16 11:59:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:21,167 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 307 transitions. [2022-10-16 11:59:21,167 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 11:59:21,167 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 307 transitions. [2022-10-16 11:59:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:59:21,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:21,168 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 11:59:21,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-16 11:59:21,168 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 11:59:21,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1916503010, now seen corresponding path program 1 times [2022-10-16 11:59:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:21,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370258951] [2022-10-16 11:59:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:21,303 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 11:59:21,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:21,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370258951] [2022-10-16 11:59:21,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370258951] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:21,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044736487] [2022-10-16 11:59:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:21,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:21,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:21,306 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 11:59:21,326 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 11:59:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:21,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:59:21,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:21,476 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 11:59:21,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:59:21,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044736487] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:21,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:59:21,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-10-16 11:59:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938318882] [2022-10-16 11:59:21,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:21,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:59:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:21,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:59:21,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:59:21,478 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 11:59:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:21,630 INFO L93 Difference]: Finished difference Result 342 states and 450 transitions. [2022-10-16 11:59:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:59:21,630 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 11:59:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:21,632 INFO L225 Difference]: With dead ends: 342 [2022-10-16 11:59:21,633 INFO L226 Difference]: Without dead ends: 339 [2022-10-16 11:59:21,633 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 11:59:21,634 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 173 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:21,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 499 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-10-16 11:59:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 223. [2022-10-16 11:59:21,649 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 11:59:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 308 transitions. [2022-10-16 11:59:21,650 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 308 transitions. Word has length 29 [2022-10-16 11:59:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:21,651 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 308 transitions. [2022-10-16 11:59:21,651 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 11:59:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 308 transitions. [2022-10-16 11:59:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:59:21,652 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:21,652 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 11:59:21,691 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 11:59:21,867 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 11:59:21,868 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 11:59:21,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:21,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1075438192, now seen corresponding path program 1 times [2022-10-16 11:59:21,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:21,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444915496] [2022-10-16 11:59:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:21,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:21,991 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 11:59:21,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444915496] [2022-10-16 11:59:21,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444915496] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:21,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:21,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 11:59:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425081616] [2022-10-16 11:59:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:21,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:59:21,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:59:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:59:21,993 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 11:59:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:22,113 INFO L93 Difference]: Finished difference Result 270 states and 344 transitions. [2022-10-16 11:59:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:59:22,114 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 11:59:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:22,115 INFO L225 Difference]: With dead ends: 270 [2022-10-16 11:59:22,116 INFO L226 Difference]: Without dead ends: 269 [2022-10-16 11:59:22,116 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 11:59:22,117 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 89 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:22,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 447 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-10-16 11:59:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 227. [2022-10-16 11:59:22,131 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 11:59:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 312 transitions. [2022-10-16 11:59:22,133 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 312 transitions. Word has length 30 [2022-10-16 11:59:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:22,133 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 312 transitions. [2022-10-16 11:59:22,133 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 11:59:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 312 transitions. [2022-10-16 11:59:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:59:22,134 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:22,134 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 11:59:22,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 11:59:22,135 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 11:59:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash -717948728, now seen corresponding path program 1 times [2022-10-16 11:59:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:22,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942548675] [2022-10-16 11:59:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:22,199 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 11:59:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:22,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942548675] [2022-10-16 11:59:22,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942548675] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:22,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:22,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:22,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078076598] [2022-10-16 11:59:22,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:22,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:59:22,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:59:22,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:59:22,202 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 11:59:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:22,303 INFO L93 Difference]: Finished difference Result 269 states and 343 transitions. [2022-10-16 11:59:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:59:22,304 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 11:59:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:22,305 INFO L225 Difference]: With dead ends: 269 [2022-10-16 11:59:22,306 INFO L226 Difference]: Without dead ends: 268 [2022-10-16 11:59:22,306 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 11:59:22,307 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 73 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:22,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 295 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:59:22,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-10-16 11:59:22,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 249. [2022-10-16 11:59:22,323 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 11:59:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 339 transitions. [2022-10-16 11:59:22,325 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 339 transitions. Word has length 30 [2022-10-16 11:59:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:22,325 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 339 transitions. [2022-10-16 11:59:22,325 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 11:59:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 339 transitions. [2022-10-16 11:59:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:59:22,326 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:22,326 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 11:59:22,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-16 11:59:22,327 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 11:59:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:22,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1193442587, now seen corresponding path program 1 times [2022-10-16 11:59:22,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:22,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495517953] [2022-10-16 11:59:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:22,975 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 11:59:22,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:22,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495517953] [2022-10-16 11:59:22,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495517953] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:22,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:22,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:59:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965871845] [2022-10-16 11:59:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:22,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:59:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:59:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:22,978 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 11:59:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:23,349 INFO L93 Difference]: Finished difference Result 280 states and 383 transitions. [2022-10-16 11:59:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:59:23,350 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 11:59:23,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:23,352 INFO L225 Difference]: With dead ends: 280 [2022-10-16 11:59:23,352 INFO L226 Difference]: Without dead ends: 279 [2022-10-16 11:59:23,352 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 11:59:23,353 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 16 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:23,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 416 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 11:59:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-10-16 11:59:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2022-10-16 11:59:23,374 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 11:59:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 354 transitions. [2022-10-16 11:59:23,376 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 354 transitions. Word has length 30 [2022-10-16 11:59:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:23,376 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 354 transitions. [2022-10-16 11:59:23,377 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 11:59:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 354 transitions. [2022-10-16 11:59:23,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 11:59:23,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:23,378 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 11:59:23,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 11:59:23,378 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 11:59:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:23,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2101831867, now seen corresponding path program 1 times [2022-10-16 11:59:23,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:23,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834831942] [2022-10-16 11:59:23,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:23,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:23,545 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 11:59:23,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834831942] [2022-10-16 11:59:23,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834831942] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748196618] [2022-10-16 11:59:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:23,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:23,547 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 11:59:23,555 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 11:59:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:23,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:59:23,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:59:23,706 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 11:59:23,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:59:23,742 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 11:59:23,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748196618] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:59:23,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:59:23,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-10-16 11:59:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459761089] [2022-10-16 11:59:23,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:59:23,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 11:59:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:23,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 11:59:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:59:23,744 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 11:59:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:24,005 INFO L93 Difference]: Finished difference Result 411 states and 519 transitions. [2022-10-16 11:59:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 11:59:24,006 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 11:59:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:24,008 INFO L225 Difference]: With dead ends: 411 [2022-10-16 11:59:24,008 INFO L226 Difference]: Without dead ends: 409 [2022-10-16 11:59:24,009 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 11:59:24,010 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 488 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:59:24,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 579 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:59:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-10-16 11:59:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 267. [2022-10-16 11:59:24,034 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 11:59:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 364 transitions. [2022-10-16 11:59:24,036 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 364 transitions. Word has length 31 [2022-10-16 11:59:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:24,036 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 364 transitions. [2022-10-16 11:59:24,036 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 11:59:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 364 transitions. [2022-10-16 11:59:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 11:59:24,037 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:24,037 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 11:59:24,081 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 11:59:24,250 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 11:59:24,251 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 11:59:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1657985306, now seen corresponding path program 1 times [2022-10-16 11:59:24,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:24,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593077492] [2022-10-16 11:59:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:24,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:24,326 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 11:59:24,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:24,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593077492] [2022-10-16 11:59:24,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593077492] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:24,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:24,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:59:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326144948] [2022-10-16 11:59:24,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:24,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:24,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:24,329 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 11:59:24,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:24,417 INFO L93 Difference]: Finished difference Result 267 states and 364 transitions. [2022-10-16 11:59:24,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:24,418 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 11:59:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:24,419 INFO L225 Difference]: With dead ends: 267 [2022-10-16 11:59:24,420 INFO L226 Difference]: Without dead ends: 265 [2022-10-16 11:59:24,420 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 11:59:24,422 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 11:59:24,422 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 11:59:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-10-16 11:59:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-10-16 11:59:24,448 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 11:59:24,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 358 transitions. [2022-10-16 11:59:24,450 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 358 transitions. Word has length 31 [2022-10-16 11:59:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:24,451 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 358 transitions. [2022-10-16 11:59:24,451 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 11:59:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 358 transitions. [2022-10-16 11:59:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 11:59:24,452 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:24,452 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 11:59:24,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-16 11:59:24,453 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 11:59:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash 140592865, now seen corresponding path program 1 times [2022-10-16 11:59:24,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:24,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487933908] [2022-10-16 11:59:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:59:24,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:24,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487933908] [2022-10-16 11:59:24,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487933908] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:24,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:24,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:59:24,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552359218] [2022-10-16 11:59:24,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:24,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:59:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:24,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:59:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:59:24,557 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 11:59:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:24,607 INFO L93 Difference]: Finished difference Result 371 states and 515 transitions. [2022-10-16 11:59:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:59:24,607 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 11:59:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:24,609 INFO L225 Difference]: With dead ends: 371 [2022-10-16 11:59:24,609 INFO L226 Difference]: Without dead ends: 271 [2022-10-16 11:59:24,610 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 11:59:24,611 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 11:59:24,613 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 11:59:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-10-16 11:59:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 265. [2022-10-16 11:59:24,634 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 11:59:24,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 355 transitions. [2022-10-16 11:59:24,636 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 355 transitions. Word has length 32 [2022-10-16 11:59:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:24,638 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 355 transitions. [2022-10-16 11:59:24,638 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 11:59:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 355 transitions. [2022-10-16 11:59:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:59:24,639 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:24,639 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 11:59:24,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-10-16 11:59:24,640 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 11:59:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash 114705921, now seen corresponding path program 1 times [2022-10-16 11:59:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:24,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502191072] [2022-10-16 11:59:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:25,508 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 11:59:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:25,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502191072] [2022-10-16 11:59:25,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502191072] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:59:25,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:59:25,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 11:59:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144475522] [2022-10-16 11:59:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:59:25,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:59:25,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:59:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:59:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:59:25,511 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 11:59:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:59:25,938 INFO L93 Difference]: Finished difference Result 323 states and 427 transitions. [2022-10-16 11:59:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:59:25,939 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 11:59:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:59:25,941 INFO L225 Difference]: With dead ends: 323 [2022-10-16 11:59:25,941 INFO L226 Difference]: Without dead ends: 274 [2022-10-16 11:59:25,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 11:59:25,943 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 11:59:25,944 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 11:59:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-10-16 11:59:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-10-16 11:59:25,972 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 11:59:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 366 transitions. [2022-10-16 11:59:25,974 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 366 transitions. Word has length 33 [2022-10-16 11:59:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:59:25,974 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 366 transitions. [2022-10-16 11:59:25,974 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 11:59:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 366 transitions. [2022-10-16 11:59:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:59:25,975 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:59:25,975 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 11:59:25,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-16 11:59:25,976 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 11:59:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:59:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash 924052547, now seen corresponding path program 1 times [2022-10-16 11:59:25,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:59:25,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031908665] [2022-10-16 11:59:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:59:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:44,913 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 11:59:44,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:59:44,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031908665] [2022-10-16 11:59:44,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031908665] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:59:44,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557956331] [2022-10-16 11:59:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:59:44,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:59:44,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:59:44,921 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 11:59:44,938 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 11:59:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:59:45,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 11:59:45,841 INFO L286 TraceCheckSpWp]: Computing forward predicates...