/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:05:47,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:05:47,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:05:47,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:05:47,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:05:47,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:05:47,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:05:47,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:05:47,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:05:47,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:05:47,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:05:47,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:05:47,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:05:47,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:05:47,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:05:47,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:05:47,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:05:47,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:05:47,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:05:47,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:05:47,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:05:47,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:05:47,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:05:47,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:05:47,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:05:47,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:05:47,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:05:47,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:05:47,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:05:47,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:05:47,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:05:47,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:05:47,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:05:47,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:05:47,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:05:47,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:05:47,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:05:47,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:05:47,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:05:47,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:05:47,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:05:47,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:05:47,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:05:47,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:05:47,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:05:47,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:05:47,649 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:05:47,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:05:47,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:05:47,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:05:47,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:05:47,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:05:47,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:05:47,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:05:47,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:05:47,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:05:47,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:05:47,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:05:47,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:05:47,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:05:47,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:05:47,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:05:47,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:05:47,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:05:47,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:05:47,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:05:47,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:05:47,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:05:47,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:05:47,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:05:47,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:05:47,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:05:47,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:05:48,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:05:48,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:05:48,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:05:48,022 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:05:48,022 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 18:05:48,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29e7acd4b/b64fb01cce4846d1bc259fa4eb3cd836/FLAG1c8ee6514 [2020-08-21 18:05:48,542 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:05:48,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 18:05:48,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29e7acd4b/b64fb01cce4846d1bc259fa4eb3cd836/FLAG1c8ee6514 [2020-08-21 18:05:48,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29e7acd4b/b64fb01cce4846d1bc259fa4eb3cd836 [2020-08-21 18:05:48,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:05:48,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:05:48,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:48,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:05:48,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:05:48,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:48" (1/1) ... [2020-08-21 18:05:48,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:48, skipping insertion in model container [2020-08-21 18:05:48,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:48" (1/1) ... [2020-08-21 18:05:48,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:05:48,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:05:49,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:49,247 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:05:49,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:49,425 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:05:49,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49 WrapperNode [2020-08-21 18:05:49,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:49,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:05:49,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:05:49,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:05:49,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:05:49,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:05:49,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:05:49,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:05:49,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 18:05:49,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:05:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:05:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 18:05:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 18:05:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 18:05:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:05:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:05:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 18:05:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 18:05:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 18:05:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:05:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:05:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:05:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:05:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:05:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:05:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 18:05:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:05:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:05:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 18:05:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:05:50,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:05:50,201 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 18:05:50,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:50 BoogieIcfgContainer [2020-08-21 18:05:50,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:05:50,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:05:50,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:05:50,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:05:50,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:05:48" (1/3) ... [2020-08-21 18:05:50,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e441ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:50, skipping insertion in model container [2020-08-21 18:05:50,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49" (2/3) ... [2020-08-21 18:05:50,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e441ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:50, skipping insertion in model container [2020-08-21 18:05:50,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:50" (3/3) ... [2020-08-21 18:05:50,216 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-21 18:05:50,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:05:50,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:05:50,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:05:50,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:05:50,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:05:50,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:05:50,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:05:50,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:05:50,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:05:50,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:05:50,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:05:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 18:05:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 18:05:50,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:50,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:50,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:50,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-21 18:05:50,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:50,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477752891] [2020-08-21 18:05:50,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:50,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:50,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:05:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:05:50,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477752891] [2020-08-21 18:05:50,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:50,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:05:50,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803723683] [2020-08-21 18:05:50,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:05:50,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:50,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:05:50,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:05:50,621 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 18:05:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:51,037 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-21 18:05:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:05:51,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 18:05:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:51,051 INFO L225 Difference]: With dead ends: 142 [2020-08-21 18:05:51,051 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 18:05:51,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:05:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 18:05:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 18:05:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 18:05:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-21 18:05:51,107 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-21 18:05:51,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:51,108 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-21 18:05:51,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:05:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-21 18:05:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 18:05:51,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:51,110 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] [2020-08-21 18:05:51,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:05:51,111 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:51,111 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-21 18:05:51,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:51,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076789120] [2020-08-21 18:05:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:05:51,177 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:05:51,177 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:05:51,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:05:51,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:05:51 BoogieIcfgContainer [2020-08-21 18:05:51,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:05:51,204 INFO L168 Benchmark]: Toolchain (without parser) took 2316.08 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 101.5 MB in the beginning and 193.3 MB in the end (delta: -91.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:05:51,205 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:05:51,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.77 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 101.1 MB in the beginning and 177.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:51,207 INFO L168 Benchmark]: Boogie Preprocessor took 63.01 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 174.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:51,208 INFO L168 Benchmark]: RCFGBuilder took 716.52 ms. Allocated memory is still 201.9 MB. Free memory was 174.1 MB in the beginning and 137.8 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:51,209 INFO L168 Benchmark]: TraceAbstraction took 994.16 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 137.2 MB in the beginning and 193.3 MB in the end (delta: -56.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:05:51,213 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 535.77 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 101.1 MB in the beginning and 177.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.01 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 174.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 716.52 ms. Allocated memory is still 201.9 MB. Free memory was 174.1 MB in the beginning and 137.8 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 994.16 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 137.2 MB in the beginning and 193.3 MB in the end (delta: -56.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: 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 bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [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 [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...