/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:16:06,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:16:06,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:16:06,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:16:06,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:16:06,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:16:06,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:16:06,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:16:06,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:16:06,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:16:06,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:16:06,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:16:06,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:16:06,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:16:06,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:16:06,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:16:06,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:16:06,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:16:06,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:16:06,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:16:06,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:16:06,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:16:06,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:16:06,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:16:06,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:16:06,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:16:06,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:16:06,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:16:06,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:16:06,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:16:06,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:16:06,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:16:06,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:16:06,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:16:06,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:16:06,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:16:06,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:16:06,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:16:06,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:16:06,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:16:06,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:16:06,193 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 13:16:06,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:16:06,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:16:06,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:16:06,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:16:06,215 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:16:06,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:16:06,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:16:06,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:16:06,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:16:06,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:16:06,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:16:06,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:16:06,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:16:06,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:16:06,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:16:06,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:16:06,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:16:06,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:16:06,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:16:06,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:16:06,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:16:06,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:16:06,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:16:06,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:16:06,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:16:06,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:16:06,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:16:06,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:16:06,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:16:06,220 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 -> false [2020-08-21 13:16:06,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:16:06,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:16:06,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:16:06,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:16:06,519 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:16:06,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 13:16:06,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc9997f0/0139fa72bc1b4c069bda7f417721cd67/FLAGcd3d298e1 [2020-08-21 13:16:07,004 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:16:07,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 13:16:07,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc9997f0/0139fa72bc1b4c069bda7f417721cd67/FLAGcd3d298e1 [2020-08-21 13:16:07,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc9997f0/0139fa72bc1b4c069bda7f417721cd67 [2020-08-21 13:16:07,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:16:07,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:16:07,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:07,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:16:07,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:16:07,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bdc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07, skipping insertion in model container [2020-08-21 13:16:07,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:16:07,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:16:07,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:07,627 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:16:07,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:07,828 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:16:07,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07 WrapperNode [2020-08-21 13:16:07,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:07,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:16:07,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:16:07,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:16:07,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (1/1) ... [2020-08-21 13:16:07,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:16:07,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:16:07,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:16:07,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:16:07,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (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 13:16:07,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:16:07,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:16:07,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 13:16:07,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 13:16:07,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:16:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:16:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 13:16:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 13:16:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:16:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 13:16:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:16:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:16:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:16:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 13:16:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:16:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:16:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:16:08,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:16:08,416 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 13:16:08,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:08 BoogieIcfgContainer [2020-08-21 13:16:08,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:16:08,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:16:08,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:16:08,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:16:08,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:16:07" (1/3) ... [2020-08-21 13:16:08,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c35ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:08, skipping insertion in model container [2020-08-21 13:16:08,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:07" (2/3) ... [2020-08-21 13:16:08,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c35ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:08, skipping insertion in model container [2020-08-21 13:16:08,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:08" (3/3) ... [2020-08-21 13:16:08,433 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-21 13:16:08,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:16:08,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:16:08,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:16:08,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:16:08,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:16:08,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:16:08,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:16:08,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:16:08,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:16:08,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:16:08,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:16:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-21 13:16:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 13:16:08,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:08,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:08,506 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:08,513 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-21 13:16:08,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:08,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354935472] [2020-08-21 13:16:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:08,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:08,749 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 13:16:08,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354935472] [2020-08-21 13:16:08,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:08,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:16:08,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248292064] [2020-08-21 13:16:08,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:16:08,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:08,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:16:08,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:16:08,777 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-21 13:16:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:09,010 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-21 13:16:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:16:09,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-21 13:16:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:09,025 INFO L225 Difference]: With dead ends: 76 [2020-08-21 13:16:09,025 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 13:16:09,029 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 13:16:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 13:16:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 13:16:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 13:16:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-21 13:16:09,075 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-21 13:16:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:09,076 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-21 13:16:09,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:16:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-21 13:16:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 13:16:09,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:09,078 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 13:16:09,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:09,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:09,079 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-21 13:16:09,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:09,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030350698] [2020-08-21 13:16:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:16:09,136 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:16:09,137 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:16:09,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:09,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:09 BoogieIcfgContainer [2020-08-21 13:16:09,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:09,193 INFO L168 Benchmark]: Toolchain (without parser) took 1831.03 ms. Allocated memory was 141.0 MB in the beginning and 208.7 MB in the end (delta: 67.6 MB). Free memory was 103.7 MB in the beginning and 117.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:09,194 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:16:09,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.77 ms. Allocated memory was 141.0 MB in the beginning and 208.7 MB in the end (delta: 67.6 MB). Free memory was 103.5 MB in the beginning and 186.6 MB in the end (delta: -83.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:09,198 INFO L168 Benchmark]: Boogie Preprocessor took 80.07 ms. Allocated memory is still 208.7 MB. Free memory was 186.6 MB in the beginning and 184.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:09,199 INFO L168 Benchmark]: RCFGBuilder took 511.29 ms. Allocated memory is still 208.7 MB. Free memory was 184.6 MB in the beginning and 162.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:09,200 INFO L168 Benchmark]: TraceAbstraction took 759.85 ms. Allocated memory is still 208.7 MB. Free memory was 161.8 MB in the beginning and 117.3 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:09,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 474.77 ms. Allocated memory was 141.0 MB in the beginning and 208.7 MB in the end (delta: 67.6 MB). Free memory was 103.5 MB in the beginning and 186.6 MB in the end (delta: -83.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.07 ms. Allocated memory is still 208.7 MB. Free memory was 186.6 MB in the beginning and 184.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 511.29 ms. Allocated memory is still 208.7 MB. Free memory was 184.6 MB in the beginning and 162.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 759.85 ms. Allocated memory is still 208.7 MB. Free memory was 161.8 MB in the beginning and 117.3 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 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: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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=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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...