/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:11:49,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:11:49,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:11:49,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:11:49,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:11:49,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:11:49,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:11:49,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:11:49,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:11:49,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:11:49,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:11:49,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:11:49,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:11:49,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:11:49,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:11:49,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:11:49,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:11:49,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:11:49,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:11:49,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:11:49,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:11:49,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:11:49,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:11:49,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:11:49,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:11:49,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:11:49,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:11:49,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:11:49,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:11:49,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:11:49,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:11:49,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:11:49,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:11:49,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:11:49,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:11:49,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:11:49,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:11:49,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:11:49,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:11:49,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:11:49,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:11:49,487 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:11:49,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:11:49,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:11:49,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:11:49,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:11:49,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:11:49,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:11:49,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:11:49,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:11:49,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:11:49,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:11:49,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:11:49,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:11:49,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:11:49,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:11:49,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:11:49,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:11:49,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:11:49,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:11:49,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:11:49,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:11:49,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:11:49,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:11:49,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:11:49,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:11:49,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:11:49,837 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:11:49,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:11:49,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:11:49,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:11:49,856 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:11:49,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-19 21:11:49,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd97bf97e/552a5c58d56f4dfda752d595ea480284/FLAG44202cc1c [2020-07-19 21:11:50,428 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:11:50,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-19 21:11:50,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd97bf97e/552a5c58d56f4dfda752d595ea480284/FLAG44202cc1c [2020-07-19 21:11:50,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd97bf97e/552a5c58d56f4dfda752d595ea480284 [2020-07-19 21:11:50,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:11:50,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:11:50,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:50,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:11:50,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:11:50,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:50" (1/1) ... [2020-07-19 21:11:50,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390999a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:50, skipping insertion in model container [2020-07-19 21:11:50,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:50" (1/1) ... [2020-07-19 21:11:50,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:11:50,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:11:51,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:51,067 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:11:51,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:51,241 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:11:51,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51 WrapperNode [2020-07-19 21:11:51,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:51,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:11:51,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:11:51,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:11:51,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:11:51,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:11:51,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:11:51,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:11:51,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:11:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:11:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:11:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-19 21:11:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-19 21:11:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-19 21:11:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:11:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:11:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-19 21:11:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-19 21:11:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-19 21:11:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:11:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 21:11:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:11:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:11:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 21:11:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:11:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-19 21:11:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:11:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:11:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-19 21:11:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:11:52,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:11:52,033 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-19 21:11:52,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:52 BoogieIcfgContainer [2020-07-19 21:11:52,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:11:52,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:11:52,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:11:52,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:11:52,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:50" (1/3) ... [2020-07-19 21:11:52,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57445e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:52, skipping insertion in model container [2020-07-19 21:11:52,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (2/3) ... [2020-07-19 21:11:52,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57445e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:52, skipping insertion in model container [2020-07-19 21:11:52,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:52" (3/3) ... [2020-07-19 21:11:52,061 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-19 21:11:52,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:11:52,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:11:52,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:11:52,121 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:11:52,121 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:11:52,121 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:11:52,121 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:11:52,122 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:11:52,122 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:11:52,122 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:11:52,122 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:11:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-19 21:11:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 21:11:52,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:52,153 INFO L422 BasicCegarLoop]: 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] [2020-07-19 21:11:52,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:52,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-19 21:11:52,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:52,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49969004] [2020-07-19 21:11:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6ec4c0fa [2020-07-19 21:11:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:11:52,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49969004] [2020-07-19 21:11:52,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:11:52,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:11:52,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609821548] [2020-07-19 21:11:52,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:11:52,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:11:52,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:11:52,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:11:52,459 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-07-19 21:11:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:11:52,771 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-19 21:11:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:11:52,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 21:11:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:11:52,785 INFO L225 Difference]: With dead ends: 138 [2020-07-19 21:11:52,785 INFO L226 Difference]: Without dead ends: 68 [2020-07-19 21:11:52,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:11:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-19 21:11:52,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-19 21:11:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-19 21:11:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-19 21:11:52,855 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-19 21:11:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:11:52,856 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-19 21:11:52,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:11:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-19 21:11:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 21:11:52,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:52,858 INFO L422 BasicCegarLoop]: 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] [2020-07-19 21:11:52,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:11:52,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-19 21:11:52,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:52,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405145491] [2020-07-19 21:11:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6ec4c0fa [2020-07-19 21:11:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:53,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:53,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:53,231 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:11:53,232 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:11:53,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:11:53,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:53 BoogieIcfgContainer [2020-07-19 21:11:53,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:11:53,303 INFO L168 Benchmark]: Toolchain (without parser) took 2525.65 ms. Allocated memory was 143.7 MB in the beginning and 229.1 MB in the end (delta: 85.5 MB). Free memory was 101.1 MB in the beginning and 176.6 MB in the end (delta: -75.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,304 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.44 ms. Allocated memory was 143.7 MB in the beginning and 198.2 MB in the end (delta: 54.5 MB). Free memory was 100.8 MB in the beginning and 173.3 MB in the end (delta: -72.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,306 INFO L168 Benchmark]: Boogie Preprocessor took 64.15 ms. Allocated memory is still 198.2 MB. Free memory was 173.3 MB in the beginning and 170.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,307 INFO L168 Benchmark]: RCFGBuilder took 740.67 ms. Allocated memory is still 198.2 MB. Free memory was 170.6 MB in the beginning and 134.2 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,308 INFO L168 Benchmark]: TraceAbstraction took 1250.92 ms. Allocated memory was 198.2 MB in the beginning and 229.1 MB in the end (delta: 30.9 MB). Free memory was 133.5 MB in the beginning and 176.6 MB in the end (delta: -43.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:11:53,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 463.44 ms. Allocated memory was 143.7 MB in the beginning and 198.2 MB in the end (delta: 54.5 MB). Free memory was 100.8 MB in the beginning and 173.3 MB in the end (delta: -72.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.15 ms. Allocated memory is still 198.2 MB. Free memory was 173.3 MB in the beginning and 170.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.67 ms. Allocated memory is still 198.2 MB. Free memory was 170.6 MB in the beginning and 134.2 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1250.92 ms. Allocated memory was 198.2 MB in the beginning and 229.1 MB in the end (delta: 30.9 MB). Free memory was 133.5 MB in the beginning and 176.6 MB in the end (delta: -43.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=9223372034706243602, \old(Zero_fmod)=9223372034706243599, \old(Zero_fmod)=9223372034706243590, one_fmod=1, Zero_fmod={3:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=9223372034706243588, one_fmod=1, Zero_fmod={3:0}] [L164] __int32_t hx; VAL [\old(x)=9223372034706243588, one_fmod=1, x=9223372034706243588, Zero_fmod={3:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372034706243588, \result=6, hx=0, one_fmod=1, x=9223372034706243588, Zero_fmod={3:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=6, one_fmod=1, x=9223372034706243588, Zero_fmod={3:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, one_fmod=1, Zero_fmod={3:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, one_fmod=1, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, lx=9223372034706243600, ly=9223372034706243587, one_fmod=1, sx=-3, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, hx=2146435072, lx=9223372034706243600, ly=9223372034706243587, one_fmod=1, sx=-3, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372034706243589, one_fmod=1, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=9223372034706243589, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=9223372034706243589, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...