/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:16:41,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:41,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:41,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:41,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:41,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:41,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:41,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:41,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:41,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:41,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:41,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:41,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:41,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:41,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:41,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:41,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:41,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:41,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:41,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:41,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:41,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:41,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:41,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:41,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:16:41,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:16:41,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:16:41,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:16:41,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:16:41,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:16:41,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:16:41,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:16:41,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:16:41,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:16:41,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:16:41,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:16:41,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:16:41,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:16:41,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:41,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:41,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:41,696 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 10:16:41,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:41,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:41,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:41,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:41,724 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:41,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:41,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:41,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:41,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:41,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:41,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:41,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:41,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:41,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:41,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:41,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:41,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:41,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:41,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:41,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:41,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:41,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:41,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:41,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:41,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:41,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:41,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:41,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:41,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:41,730 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 10:16:42,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:42,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:42,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:42,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:42,251 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:42,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-09-21 10:16:42,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cafdc357a/cc081f543c8c411fb73ff9250b93bba9/FLAGc1e7ca93d [2020-09-21 10:16:42,885 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:42,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-09-21 10:16:42,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cafdc357a/cc081f543c8c411fb73ff9250b93bba9/FLAGc1e7ca93d [2020-09-21 10:16:43,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cafdc357a/cc081f543c8c411fb73ff9250b93bba9 [2020-09-21 10:16:43,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:43,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:43,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:43,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:43,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:43,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a91d473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43, skipping insertion in model container [2020-09-21 10:16:43,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:43,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:43,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:43,532 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:43,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:43,694 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:43,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43 WrapperNode [2020-09-21 10:16:43,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:43,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:43,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:43,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:43,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (1/1) ... [2020-09-21 10:16:43,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:43,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:43,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:43,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:43,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (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 10:16:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-09-21 10:16:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-09-21 10:16:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:44,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:44,234 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 10:16:44,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:44 BoogieIcfgContainer [2020-09-21 10:16:44,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:44,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:44,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:44,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:44,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:43" (1/3) ... [2020-09-21 10:16:44,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ccfc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:44, skipping insertion in model container [2020-09-21 10:16:44,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:43" (2/3) ... [2020-09-21 10:16:44,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ccfc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:44, skipping insertion in model container [2020-09-21 10:16:44,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:44" (3/3) ... [2020-09-21 10:16:44,249 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-09-21 10:16:44,262 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:44,273 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:44,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:44,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:44,329 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:44,329 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:44,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:44,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:44,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:44,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:44,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-21 10:16:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 10:16:44,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:44,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:44,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:44,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-09-21 10:16:44,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:44,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229318780] [2020-09-21 10:16:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:44,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:16:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:44,669 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 10:16:44,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229318780] [2020-09-21 10:16:44,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:44,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:44,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950995211] [2020-09-21 10:16:44,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:44,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:44,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:44,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:44,705 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-09-21 10:16:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:44,989 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-09-21 10:16:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:16:44,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 10:16:44,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:45,007 INFO L225 Difference]: With dead ends: 86 [2020-09-21 10:16:45,008 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 10:16:45,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 10:16:45,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 10:16:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-21 10:16:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 10:16:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-09-21 10:16:45,070 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-09-21 10:16:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:45,071 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-09-21 10:16:45,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-09-21 10:16:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:16:45,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:45,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:45,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:45,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-09-21 10:16:45,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:45,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377905917] [2020-09-21 10:16:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:45,174 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:45,174 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:45,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:45,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:45 BoogieIcfgContainer [2020-09-21 10:16:45,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:45,204 INFO L168 Benchmark]: Toolchain (without parser) took 1962.39 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 109.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:45,205 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:16:45,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.34 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 180.7 MB in the end (delta: -80.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:45,207 INFO L168 Benchmark]: Boogie Preprocessor took 54.66 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 178.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:45,208 INFO L168 Benchmark]: RCFGBuilder took 489.19 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:45,209 INFO L168 Benchmark]: TraceAbstraction took 959.29 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 109.2 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:45,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 450.34 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 180.7 MB in the end (delta: -80.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.66 ms. Allocated memory is still 202.9 MB. Free memory was 180.7 MB in the beginning and 178.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.19 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 959.29 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 109.2 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: 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 someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] 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; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 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: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...