/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 22:07:44,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:07:44,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:07:44,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:07:44,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:07:44,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:07:44,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:07:44,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:07:44,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:07:44,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:07:44,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:07:44,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:07:44,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:07:44,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:07:44,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:07:44,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:07:44,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:07:44,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:07:44,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:07:44,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:07:44,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:07:44,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:07:44,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:07:44,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:07:44,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:07:44,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:07:44,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:07:44,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:07:44,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:07:44,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:07:44,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:07:44,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:07:44,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:07:44,748 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:07:44,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:07:44,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:07:44,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:07:44,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:07:44,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:07:44,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:07:44,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:07:44,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:07:44,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:07:44,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:07:44,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:07:44,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:07:44,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:07:44,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:07:44,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:07:44,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:07:44,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:07:44,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:07:44,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:07:44,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:07:44,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:07:44,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:07:44,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:07:44,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:07:44,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:07:45,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:07:45,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:07:45,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:07:45,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:07:45,093 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:07:45,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 22:07:45,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45e7fc01b/35b555d12cc6409799b9a7ed1924fee4/FLAGa37516fa0 [2020-08-21 22:07:45,659 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:07:45,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 22:07:45,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45e7fc01b/35b555d12cc6409799b9a7ed1924fee4/FLAGa37516fa0 [2020-08-21 22:07:46,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45e7fc01b/35b555d12cc6409799b9a7ed1924fee4 [2020-08-21 22:07:46,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:07:46,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:07:46,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:07:46,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:07:46,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:07:46,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a56f015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46, skipping insertion in model container [2020-08-21 22:07:46,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:07:46,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:07:46,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:07:46,255 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:07:46,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:07:46,408 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:07:46,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46 WrapperNode [2020-08-21 22:07:46,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:07:46,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:07:46,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:07:46,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:07:46,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:07:46,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:07:46,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:07:46,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:07:46,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:07:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:07:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:07:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 22:07:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 22:07:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:07:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:07:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 22:07:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 22:07:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:07:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 22:07:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:07:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:07:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:07:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 22:07:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:07:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:07:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:07:46,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:07:46,920 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 22:07:46,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:07:46 BoogieIcfgContainer [2020-08-21 22:07:46,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:07:46,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:07:46,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:07:46,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:07:46,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:07:46" (1/3) ... [2020-08-21 22:07:46,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584152b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:07:46, skipping insertion in model container [2020-08-21 22:07:46,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (2/3) ... [2020-08-21 22:07:46,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584152b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:07:46, skipping insertion in model container [2020-08-21 22:07:46,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:07:46" (3/3) ... [2020-08-21 22:07:46,956 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-21 22:07:46,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:07:46,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:07:46,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:07:47,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:07:47,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:07:47,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:07:47,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:07:47,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:07:47,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:07:47,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:07:47,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:07:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 22:07:47,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 22:07:47,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:07:47,045 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] [2020-08-21 22:07:47,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:07:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:07:47,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-21 22:07:47,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:07:47,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375782382] [2020-08-21 22:07:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:07:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:07:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:07:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:07:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:07:47,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375782382] [2020-08-21 22:07:47,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:07:47,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:07:47,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831845700] [2020-08-21 22:07:47,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:07:47,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:07:47,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:07:47,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:07:47,354 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 22:07:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:07:47,616 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 22:07:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:07:47,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 22:07:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:07:47,632 INFO L225 Difference]: With dead ends: 86 [2020-08-21 22:07:47,633 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 22:07:47,637 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 [2020-08-21 22:07:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 22:07:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 22:07:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 22:07:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 22:07:47,687 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 22:07:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:07:47,688 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 22:07:47,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:07:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 22:07:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 22:07:47,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:07:47,690 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] [2020-08-21 22:07:47,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:07:47,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:07:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:07:47,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-21 22:07:47,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:07:47,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856319207] [2020-08-21 22:07:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:07:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:07:47,750 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:07:47,751 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:07:47,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:07:47,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:07:47 BoogieIcfgContainer [2020-08-21 22:07:47,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:07:47,777 INFO L168 Benchmark]: Toolchain (without parser) took 1755.90 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 103.1 MB in the beginning and 107.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:47,778 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:07:47,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.59 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 102.9 MB in the beginning and 180.3 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:47,780 INFO L168 Benchmark]: Boogie Preprocessor took 66.89 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:47,781 INFO L168 Benchmark]: RCFGBuilder took 456.24 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 155.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:47,782 INFO L168 Benchmark]: TraceAbstraction took 837.57 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 107.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:47,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.59 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 102.9 MB in the beginning and 180.3 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.89 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.24 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 155.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 837.57 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 107.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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, 0.0s 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...