/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-eb0fd7c [2020-09-21 10:16:43,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:43,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:43,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:43,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:43,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:43,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:43,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:43,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:43,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:43,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:43,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:43,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:43,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:43,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:43,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:43,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:43,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:43,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:43,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:43,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:43,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:43,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:43,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:43,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:16:43,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:16:43,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:16:43,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:16:43,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:16:43,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:16:43,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:16:43,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:16:43,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:16:43,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:16:43,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:16:43,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:16:43,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:16:43,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:16:43,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:43,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:43,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:43,708 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 [2020-09-21 10:16:43,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:43,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:43,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:43,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:43,741 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:43,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:43,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:43,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:43,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:43,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:43,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:43,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:43,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:43,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:43,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:43,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:43,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:43,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:43,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:43,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:43,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:43,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:43,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:43,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:43,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:43,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:43,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:43,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:43,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:43,748 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 [2020-09-21 10:16:44,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:44,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:44,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:44,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:44,281 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:44,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-09-21 10:16:44,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc49b0e62/63ca8c9c37004eafa18d776d9285ddff/FLAGddb142063 [2020-09-21 10:16:44,962 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:44,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-09-21 10:16:44,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc49b0e62/63ca8c9c37004eafa18d776d9285ddff/FLAGddb142063 [2020-09-21 10:16:45,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc49b0e62/63ca8c9c37004eafa18d776d9285ddff [2020-09-21 10:16:45,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:45,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:45,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:45,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:45,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:45,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f546c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45, skipping insertion in model container [2020-09-21 10:16:45,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:45,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:45,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:45,623 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:45,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:45,691 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:45,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45 WrapperNode [2020-09-21 10:16:45,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:45,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:45,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:45,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:45,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (1/1) ... [2020-09-21 10:16:45,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:45,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:45,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:45,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:45,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (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 [2020-09-21 10:16:45,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-09-21 10:16:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-09-21 10:16:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:46,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:46,304 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 10:16:46,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:46 BoogieIcfgContainer [2020-09-21 10:16:46,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:46,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:46,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:46,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:46,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:45" (1/3) ... [2020-09-21 10:16:46,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a34c2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:46, skipping insertion in model container [2020-09-21 10:16:46,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:45" (2/3) ... [2020-09-21 10:16:46,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a34c2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:46, skipping insertion in model container [2020-09-21 10:16:46,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:46" (3/3) ... [2020-09-21 10:16:46,319 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-09-21 10:16:46,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:46,344 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:46,368 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:46,402 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:46,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:46,402 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:46,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:46,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:46,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:46,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:46,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-21 10:16:46,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 10:16:46,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:46,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:46,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:46,442 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-09-21 10:16:46,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:46,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384201097] [2020-09-21 10:16:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:46,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384201097] [2020-09-21 10:16:46,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:46,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:46,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626426185] [2020-09-21 10:16:46,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:46,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:46,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:46,765 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-09-21 10:16:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:47,048 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-09-21 10:16:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:16:47,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-21 10:16:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:47,066 INFO L225 Difference]: With dead ends: 76 [2020-09-21 10:16:47,066 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 10:16:47,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:16:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 10:16:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-21 10:16:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 10:16:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-09-21 10:16:47,129 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-09-21 10:16:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:47,129 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-09-21 10:16:47,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-09-21 10:16:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 10:16:47,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:47,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:47,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:47,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:47,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:47,133 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-09-21 10:16:47,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:47,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359233923] [2020-09-21 10:16:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:47,214 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:47,214 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:47,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:47,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:47 BoogieIcfgContainer [2020-09-21 10:16:47,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:47,243 INFO L168 Benchmark]: Toolchain (without parser) took 1931.99 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 111.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:47,245 INFO L168 Benchmark]: CDTParser took 0.13 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:16:47,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.50 ms. Allocated memory is still 139.5 MB. Free memory was 101.8 MB in the beginning and 90.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:47,247 INFO L168 Benchmark]: Boogie Preprocessor took 133.68 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 179.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:47,248 INFO L168 Benchmark]: RCFGBuilder took 482.46 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 157.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:47,249 INFO L168 Benchmark]: TraceAbstraction took 929.10 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 111.8 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:47,253 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.50 ms. Allocated memory is still 139.5 MB. Free memory was 101.8 MB in the beginning and 90.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.68 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 179.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.46 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 157.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 929.10 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 111.8 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s 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...