/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 0.1.25-5644d1e-m [2020-08-18 15:25:36,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:25:36,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:25:36,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:25:36,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:25:36,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:25:36,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:25:36,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:25:36,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:25:36,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:25:36,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:25:36,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:25:36,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:25:36,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:25:36,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:25:36,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:25:36,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:25:36,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:25:36,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:25:36,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:25:36,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:25:36,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:25:36,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:25:36,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:25:36,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:25:36,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:25:36,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:25:36,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:25:36,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:25:36,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:25:36,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:25:36,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:25:36,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:25:36,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:25:36,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:25:36,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:25:36,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:25:36,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:25:36,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:25:36,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:25:36,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:25:36,560 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 15:25:36,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:25:36,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:25:36,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:25:36,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:25:36,606 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:25:36,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:25:36,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:25:36,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:25:36,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:25:36,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:25:36,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:25:36,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:25:36,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:25:36,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:25:36,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:25:36,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:25:36,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:25:36,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:25:36,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:25:36,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:25:36,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:25:36,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:25:36,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:25:36,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:25:36,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:25:36,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:25:36,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:25:36,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:25:36,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:25:36,612 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 [2020-08-18 15:25:36,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:25:36,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:25:36,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:25:36,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:25:36,983 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:25:36,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-18 15:25:37,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352a2b0b7/3abeffdeccb14173a8bf19482b766445/FLAG2a84c7d92 [2020-08-18 15:25:37,492 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:25:37,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-18 15:25:37,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352a2b0b7/3abeffdeccb14173a8bf19482b766445/FLAG2a84c7d92 [2020-08-18 15:25:37,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/352a2b0b7/3abeffdeccb14173a8bf19482b766445 [2020-08-18 15:25:37,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:25:37,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:25:37,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:37,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:25:37,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:25:37,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:37" (1/1) ... [2020-08-18 15:25:37,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5dd7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:37, skipping insertion in model container [2020-08-18 15:25:37,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:37" (1/1) ... [2020-08-18 15:25:37,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:25:37,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:25:38,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:38,058 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:25:38,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:38,109 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:25:38,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38 WrapperNode [2020-08-18 15:25:38,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:38,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:25:38,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:25:38,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:25:38,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:25:38,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:25:38,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:25:38,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:25:38,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (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 15:25:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:25:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:25:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 15:25:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 15:25:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:25:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:25:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 15:25:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 15:25:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:25:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 15:25:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:25:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:25:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:25:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 15:25:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:25:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:25:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:25:38,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:25:38,639 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 15:25:38,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:38 BoogieIcfgContainer [2020-08-18 15:25:38,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:25:38,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:25:38,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:25:38,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:25:38,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:25:37" (1/3) ... [2020-08-18 15:25:38,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349b9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:38, skipping insertion in model container [2020-08-18 15:25:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (2/3) ... [2020-08-18 15:25:38,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349b9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:38, skipping insertion in model container [2020-08-18 15:25:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:38" (3/3) ... [2020-08-18 15:25:38,653 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-18 15:25:38,664 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:25:38,673 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:25:38,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:25:38,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:25:38,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:25:38,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:25:38,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:25:38,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:25:38,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:25:38,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:25:38,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:25:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-18 15:25:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:25:38,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:38,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:25:38,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:38,767 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-18 15:25:38,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:38,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909866421] [2020-08-18 15:25:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:38,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:38,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:25:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:38,995 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 15:25:38,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909866421] [2020-08-18 15:25:38,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:25:38,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:25:39,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458370242] [2020-08-18 15:25:39,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:25:39,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:25:39,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:25:39,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:25:39,023 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-18 15:25:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:25:39,273 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-18 15:25:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:25:39,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-18 15:25:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:25:39,293 INFO L225 Difference]: With dead ends: 76 [2020-08-18 15:25:39,294 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 15:25:39,299 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 15:25:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 15:25:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 15:25:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 15:25:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-18 15:25:39,364 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-18 15:25:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:25:39,365 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-18 15:25:39,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:25:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-18 15:25:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 15:25:39,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:39,368 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 15:25:39,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:25:39,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:39,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:39,370 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-18 15:25:39,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:39,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131736352] [2020-08-18 15:25:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:25:39,483 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:25:39,483 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:25:39,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:25:39,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:25:39 BoogieIcfgContainer [2020-08-18 15:25:39,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:25:39,507 INFO L168 Benchmark]: Toolchain (without parser) took 1654.71 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 106.4 MB in the beginning and 115.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,508 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.06 ms. Allocated memory is still 143.7 MB. Free memory was 106.2 MB in the beginning and 94.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,510 INFO L168 Benchmark]: Boogie Preprocessor took 122.70 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 94.8 MB in the beginning and 182.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,511 INFO L168 Benchmark]: RCFGBuilder took 411.93 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 161.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,512 INFO L168 Benchmark]: TraceAbstraction took 858.48 ms. Allocated memory is still 205.5 MB. Free memory was 160.3 MB in the beginning and 115.3 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,516 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 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.06 ms. Allocated memory is still 143.7 MB. Free memory was 106.2 MB in the beginning and 94.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.70 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 94.8 MB in the beginning and 182.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.93 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 161.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 858.48 ms. Allocated memory is still 205.5 MB. Free memory was 160.3 MB in the beginning and 115.3 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 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: 0.7s, 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, 0.1s 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...