/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:13:45,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:13:45,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:13:45,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:13:45,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:13:45,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:13:45,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:13:45,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:13:45,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:13:45,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:13:45,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:13:45,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:13:45,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:13:45,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:13:45,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:13:45,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:13:45,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:13:45,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:13:45,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:13:45,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:13:45,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:13:45,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:13:45,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:13:45,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:13:45,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:13:45,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:13:45,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:13:45,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:13:45,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:13:45,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:13:45,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:13:45,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:13:45,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:13:45,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:13:45,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:13:45,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:13:45,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:13:45,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:13:45,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:13:45,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:13:45,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:13:45,204 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 16:13:45,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:13:45,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:13:45,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:13:45,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:13:45,258 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:13:45,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:13:45,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:13:45,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:13:45,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:13:45,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:13:45,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:13:45,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:13:45,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:13:45,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:13:45,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:13:45,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:13:45,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:13:45,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:13:45,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:13:45,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:13:45,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:13:45,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:13:45,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:13:45,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:13:45,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:13:45,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:13:45,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:13:45,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:13:45,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:13:45,264 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 [2020-08-18 16:13:45,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:13:45,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:13:45,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:13:45,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:13:45,642 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:13:45,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2020-08-18 16:13:45,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c8a5c0a/3ef5c27f59834bbda9d7a44bdb3ba2e0/FLAGbd4ff0152 [2020-08-18 16:13:46,229 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:13:46,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2020-08-18 16:13:46,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c8a5c0a/3ef5c27f59834bbda9d7a44bdb3ba2e0/FLAGbd4ff0152 [2020-08-18 16:13:46,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c8a5c0a/3ef5c27f59834bbda9d7a44bdb3ba2e0 [2020-08-18 16:13:46,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:13:46,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:13:46,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:13:46,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:13:46,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:13:46,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:13:46" (1/1) ... [2020-08-18 16:13:46,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4836d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:46, skipping insertion in model container [2020-08-18 16:13:46,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:13:46" (1/1) ... [2020-08-18 16:13:46,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:13:46,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:13:46,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:13:46,928 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:13:46,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:13:47,086 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:13:47,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47 WrapperNode [2020-08-18 16:13:47,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:13:47,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:13:47,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:13:47,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:13:47,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (1/1) ... [2020-08-18 16:13:47,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (1/1) ... [2020-08-18 16:13:47,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (1/1) ... [2020-08-18 16:13:47,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (1/1) ... [2020-08-18 16:13:47,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (1/1) ... [2020-08-18 16:13:47,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (1/1) ... [2020-08-18 16:13:47,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (1/1) ... [2020-08-18 16:13:47,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:13:47,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:13:47,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:13:47,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:13:47,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (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 16:13:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:13:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:13:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 16:13:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 16:13:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:13:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:13:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 16:13:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:13:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 16:13:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:13:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:13:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:13:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 16:13:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 16:13:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:13:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:13:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:13:47,597 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:13:47,598 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 16:13:47,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:13:47 BoogieIcfgContainer [2020-08-18 16:13:47,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:13:47,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:13:47,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:13:47,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:13:47,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:13:46" (1/3) ... [2020-08-18 16:13:47,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194be955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:13:47, skipping insertion in model container [2020-08-18 16:13:47,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:47" (2/3) ... [2020-08-18 16:13:47,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194be955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:13:47, skipping insertion in model container [2020-08-18 16:13:47,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:13:47" (3/3) ... [2020-08-18 16:13:47,624 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052d.c [2020-08-18 16:13:47,651 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:13:47,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:13:47,679 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:13:47,701 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:13:47,701 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:13:47,702 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:13:47,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:13:47,702 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:13:47,702 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:13:47,702 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:13:47,702 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:13:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-18 16:13:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 16:13:47,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:47,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:13:47,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:47,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-18 16:13:47,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:47,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047205448] [2020-08-18 16:13:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:47,969 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 16:13:47,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047205448] [2020-08-18 16:13:47,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:13:47,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:13:47,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463058679] [2020-08-18 16:13:47,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:13:47,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:47,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:13:47,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:13:48,000 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-18 16:13:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:48,262 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-18 16:13:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:13:48,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 16:13:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:48,275 INFO L225 Difference]: With dead ends: 94 [2020-08-18 16:13:48,276 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 16:13:48,280 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 [2020-08-18 16:13:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 16:13:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-18 16:13:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 16:13:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-18 16:13:48,327 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-18 16:13:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:48,327 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-18 16:13:48,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:13:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-18 16:13:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 16:13:48,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:48,329 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] [2020-08-18 16:13:48,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:13:48,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:48,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:48,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-18 16:13:48,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:48,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890989146] [2020-08-18 16:13:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:13:48,387 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:13:48,388 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:13:48,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:13:48,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:13:48 BoogieIcfgContainer [2020-08-18 16:13:48,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:13:48,434 INFO L168 Benchmark]: Toolchain (without parser) took 1729.53 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 102.2 MB in the beginning and 103.0 MB in the end (delta: -840.6 kB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:48,435 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:13:48,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.41 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 178.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:48,440 INFO L168 Benchmark]: Boogie Preprocessor took 49.33 ms. Allocated memory is still 200.3 MB. Free memory was 178.0 MB in the beginning and 176.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:48,441 INFO L168 Benchmark]: RCFGBuilder took 466.81 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 152.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:48,442 INFO L168 Benchmark]: TraceAbstraction took 814.66 ms. Allocated memory is still 200.3 MB. Free memory was 151.5 MB in the beginning and 103.0 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:48,446 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.41 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 178.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.33 ms. Allocated memory is still 200.3 MB. Free memory was 178.0 MB in the beginning and 176.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.81 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 152.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 814.66 ms. Allocated memory is still 200.3 MB. Free memory was 151.5 MB in the beginning and 103.0 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = 0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == 0.0 && __signbit_double(res) == 0 [L102] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...