/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:15:09,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:15:09,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:15:09,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:15:09,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:15:09,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:15:09,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:15:09,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:15:09,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:15:09,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:15:09,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:15:09,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:15:09,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:15:09,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:15:09,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:15:09,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:15:09,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:15:09,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:15:09,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:15:09,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:15:09,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:15:09,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:15:09,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:15:09,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:15:09,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:15:09,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:15:09,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:15:09,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:15:09,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:15:09,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:15:09,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:15:09,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:15:09,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:15:09,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:15:09,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:15:09,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:15:09,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:15:09,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:15:09,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:15:09,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:15:09,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:15:09,636 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 [2020-08-18 20:15:09,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:15:09,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:15:09,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:15:09,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:15:09,663 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:15:09,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:15:09,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:15:09,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:15:09,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:15:09,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:15:09,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:15:09,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:15:09,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:15:09,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:15:09,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:15:09,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:15:09,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:15:09,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:15:09,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:15:09,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:15:09,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:15:09,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:15:09,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:15:09,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:15:09,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:15:09,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:15:09,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:15:09,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:15:09,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:15:09,668 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=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:15:09,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:15:09,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:15:09,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:15:09,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:15:09,998 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:15:09,999 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-08-18 20:15:10,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83222193a/eeb1b16510d64abf9b38f9deb04ea67d/FLAG71f5847ce [2020-08-18 20:15:10,550 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:15:10,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-08-18 20:15:10,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83222193a/eeb1b16510d64abf9b38f9deb04ea67d/FLAG71f5847ce [2020-08-18 20:15:10,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83222193a/eeb1b16510d64abf9b38f9deb04ea67d [2020-08-18 20:15:10,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:15:10,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:15:10,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:10,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:15:10,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:15:10,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:10" (1/1) ... [2020-08-18 20:15:10,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e6ef35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:10, skipping insertion in model container [2020-08-18 20:15:10,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:10" (1/1) ... [2020-08-18 20:15:10,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:15:10,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:15:11,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:11,149 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:15:11,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:11,207 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:15:11,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11 WrapperNode [2020-08-18 20:15:11,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:11,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:15:11,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:15:11,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:15:11,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (1/1) ... [2020-08-18 20:15:11,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (1/1) ... [2020-08-18 20:15:11,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (1/1) ... [2020-08-18 20:15:11,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (1/1) ... [2020-08-18 20:15:11,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (1/1) ... [2020-08-18 20:15:11,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (1/1) ... [2020-08-18 20:15:11,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (1/1) ... [2020-08-18 20:15:11,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:15:11,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:15:11,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:15:11,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:15:11,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (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 [2020-08-18 20:15:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:15:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:15:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-08-18 20:15:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-18 20:15:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:15:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:15:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-08-18 20:15:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:15:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 20:15:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:15:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:15:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:15:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 20:15:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-18 20:15:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:15:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:15:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:15:11,738 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:15:11,738 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 20:15:11,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:11 BoogieIcfgContainer [2020-08-18 20:15:11,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:15:11,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:15:11,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:15:11,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:15:11,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:15:10" (1/3) ... [2020-08-18 20:15:11,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3d1a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:11, skipping insertion in model container [2020-08-18 20:15:11,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:11" (2/3) ... [2020-08-18 20:15:11,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3d1a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:11, skipping insertion in model container [2020-08-18 20:15:11,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:11" (3/3) ... [2020-08-18 20:15:11,756 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-08-18 20:15:11,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:15:11,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:15:11,801 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:15:11,829 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:15:11,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:15:11,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:15:11,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:15:11,830 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:15:11,830 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:15:11,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:15:11,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:15:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-18 20:15:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 20:15:11,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:15:11,860 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] [2020-08-18 20:15:11,860 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:15:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:15:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash -288864886, now seen corresponding path program 1 times [2020-08-18 20:15:11,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:15:11,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594726837] [2020-08-18 20:15:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:15:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:15:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:15:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:15:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:15:12,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594726837] [2020-08-18 20:15:12,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:15:12,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:15:12,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386816742] [2020-08-18 20:15:12,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:15:12,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:15:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:15:12,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:15:12,139 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-18 20:15:12,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:15:12,376 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2020-08-18 20:15:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:15:12,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 20:15:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:15:12,389 INFO L225 Difference]: With dead ends: 76 [2020-08-18 20:15:12,389 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 20:15:12,393 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 [2020-08-18 20:15:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 20:15:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 20:15:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 20:15:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-08-18 20:15:12,437 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2020-08-18 20:15:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:15:12,438 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-08-18 20:15:12,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:15:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-08-18 20:15:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 20:15:12,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:15:12,440 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] [2020-08-18 20:15:12,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:15:12,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:15:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:15:12,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1876368369, now seen corresponding path program 1 times [2020-08-18 20:15:12,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:15:12,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073488583] [2020-08-18 20:15:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:15:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:15:12,585 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:15:12,585 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:15:12,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:15:12,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:15:12 BoogieIcfgContainer [2020-08-18 20:15:12,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:15:12,617 INFO L168 Benchmark]: Toolchain (without parser) took 1714.02 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 110.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:12,618 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:15:12,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.63 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 92.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:12,620 INFO L168 Benchmark]: Boogie Preprocessor took 127.97 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:12,621 INFO L168 Benchmark]: RCFGBuilder took 407.89 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 157.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:12,622 INFO L168 Benchmark]: TraceAbstraction took 868.49 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 110.4 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:12,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.63 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 92.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.97 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.89 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 157.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 868.49 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 110.4 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR round_double(x) [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND TRUE exponent_less_1023 < 20 [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] return x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] CALL, EXPR isinf_double(res) [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] RET, EXPR isinf_double(res) [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 38 SDslu, 5 SDs, 0 SdLazy, 48 SolverSat, 11 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=42occurred 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1368 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...