/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=HIGHLEXORDER --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_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:53:56,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:53:56,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:53:56,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:53:56,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:53:56,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:53:56,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:53:56,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:53:56,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:53:56,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:53:56,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:53:56,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:53:56,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:53:56,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:53:56,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:53:56,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:53:56,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:53:56,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:53:56,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:53:56,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:53:56,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:53:56,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:53:56,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:53:56,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:53:56,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:53:56,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:53:56,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:53:56,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:53:56,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:53:56,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:53:56,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:53:56,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:53:56,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:53:56,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:53:56,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:53:56,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:53:56,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:53:56,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:53:56,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:53:56,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:53:56,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:53:56,434 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 18:53:56,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:53:56,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:53:56,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:53:56,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:53:56,456 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:53:56,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:53:56,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:53:56,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:53:56,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:53:56,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:53:56,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:53:56,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:53:56,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:53:56,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:53:56,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:53:56,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:53:56,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:53:56,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:53:56,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:53:56,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:53:56,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:53:56,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:53:56,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:53:56,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:53:56,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:53:56,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:53:56,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:53:56,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:53:56,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:53:56,461 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:53:56,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:53:56,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:53:56,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:53:56,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:53:56,764 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:53:56,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-08-21 18:53:56,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43286c349/ecc146a0b49140749306c08c9114966e/FLAG54a3f1150 [2020-08-21 18:53:57,301 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:53:57,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-08-21 18:53:57,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43286c349/ecc146a0b49140749306c08c9114966e/FLAG54a3f1150 [2020-08-21 18:53:57,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43286c349/ecc146a0b49140749306c08c9114966e [2020-08-21 18:53:57,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:53:57,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:53:57,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:53:57,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:53:57,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:53:57,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:53:57" (1/1) ... [2020-08-21 18:53:57,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2584cbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:57, skipping insertion in model container [2020-08-21 18:53:57,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:53:57" (1/1) ... [2020-08-21 18:53:57,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:53:57,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:53:57,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:53:57,972 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:53:58,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:53:58,038 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:53:58,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58 WrapperNode [2020-08-21 18:53:58,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:53:58,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:53:58,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:53:58,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:53:58,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (1/1) ... [2020-08-21 18:53:58,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (1/1) ... [2020-08-21 18:53:58,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (1/1) ... [2020-08-21 18:53:58,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (1/1) ... [2020-08-21 18:53:58,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (1/1) ... [2020-08-21 18:53:58,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (1/1) ... [2020-08-21 18:53:58,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (1/1) ... [2020-08-21 18:53:58,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:53:58,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:53:58,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:53:58,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:53:58,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (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 18:53:58,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:53:58,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:53:58,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 18:53:58,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-08-21 18:53:58,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:53:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:53:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 18:53:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:53:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:53:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:53:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:53:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-08-21 18:53:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:53:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:53:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:53:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:53:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:53:58,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:53:58,645 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 18:53:58,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:53:58 BoogieIcfgContainer [2020-08-21 18:53:58,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:53:58,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:53:58,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:53:58,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:53:58,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:53:57" (1/3) ... [2020-08-21 18:53:58,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e9f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:53:58, skipping insertion in model container [2020-08-21 18:53:58,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:53:58" (2/3) ... [2020-08-21 18:53:58,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e9f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:53:58, skipping insertion in model container [2020-08-21 18:53:58,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:53:58" (3/3) ... [2020-08-21 18:53:58,656 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a.c [2020-08-21 18:53:58,664 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:53:58,671 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:53:58,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:53:58,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:53:58,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:53:58,708 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:53:58,708 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:53:58,708 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:53:58,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:53:58,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:53:58,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:53:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 18:53:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 18:53:58,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:53:58,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:53:58,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:53:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:53:58,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2010282984, now seen corresponding path program 1 times [2020-08-21 18:53:58,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:53:58,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601287575] [2020-08-21 18:53:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:53:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:53:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:53:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:53:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:53:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:53:58,955 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 18:53:58,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601287575] [2020-08-21 18:53:58,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:53:58,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:53:58,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373077295] [2020-08-21 18:53:58,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:53:58,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:53:58,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:53:58,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:53:58,977 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-08-21 18:53:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:53:59,151 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-21 18:53:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:53:59,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-08-21 18:53:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:53:59,162 INFO L225 Difference]: With dead ends: 56 [2020-08-21 18:53:59,163 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 18:53:59,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:53:59,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 18:53:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-21 18:53:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 18:53:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-08-21 18:53:59,208 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2020-08-21 18:53:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:53:59,208 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-08-21 18:53:59,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:53:59,209 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-08-21 18:53:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 18:53:59,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:53:59,210 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 18:53:59,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:53:59,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:53:59,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:53:59,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1410255941, now seen corresponding path program 1 times [2020-08-21 18:53:59,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:53:59,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132306391] [2020-08-21 18:53:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:53:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:53:59,265 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:53:59,265 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:53:59,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:53:59,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:53:59 BoogieIcfgContainer [2020-08-21 18:53:59,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:53:59,292 INFO L168 Benchmark]: Toolchain (without parser) took 1633.22 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 123.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:53:59,293 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:53:59,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.07 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 93.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:53:59,296 INFO L168 Benchmark]: Boogie Preprocessor took 154.80 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 179.5 MB in the end (delta: -86.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:53:59,297 INFO L168 Benchmark]: RCFGBuilder took 453.37 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 161.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:53:59,297 INFO L168 Benchmark]: TraceAbstraction took 639.24 ms. Allocated memory is still 202.9 MB. Free memory was 161.0 MB in the beginning and 123.5 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:53:59,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.07 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 93.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.80 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 179.5 MB in the end (delta: -86.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.37 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 161.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 639.24 ms. Allocated memory is still 202.9 MB. Free memory was 161.0 MB in the beginning and 123.5 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 52]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L47] double x = 0.0; [L48] CALL, EXPR fabs_double(x) [L26] __uint32_t high; [L28] ieee_double_shape_type gh_u; [L29] gh_u.value = (x) [L30] EXPR gh_u.parts.msw [L30] (high) = gh_u.parts.msw [L33] ieee_double_shape_type sh_u; [L34] sh_u.value = (x) [L35] sh_u.parts.msw = (high & 0x7fffffff) [L36] EXPR sh_u.value [L36] (x) = sh_u.value [L38] return x; [L48] RET, EXPR fabs_double(x) [L48] double res = fabs_double(x); [L51] EXPR res == 0.0 && __signbit_double(res) == 0 [L51] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L52] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 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...