/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 interpolation-heuristic=FIRST --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 14:52:35,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:52:35,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:52:36,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:52:36,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:52:36,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:52:36,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:52:36,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:52:36,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:52:36,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:52:36,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:52:36,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:52:36,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:52:36,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:52:36,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:52:36,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:52:36,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:52:36,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:52:36,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:52:36,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:52:36,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:52:36,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:52:36,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:52:36,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:52:36,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:52:36,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:52:36,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:52:36,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:52:36,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:52:36,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 14:52:36,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:52:36,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:52:36,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:52:36,033 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 14:52:36,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:52:36,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:52:36,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:52:36,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:52:36,066 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:52:36,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:52:36,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:52:36,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:52:36,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:52:36,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:52:36,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:52:36,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:52:36,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:52:36,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:52:36,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:52:36,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:52:36,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:52:36,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:52:36,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:52:36,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:52:36,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:52:36,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:52:36,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:52:36,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:52:36,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:52:36,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:52:36,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:52:36,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:52:36,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:52:36,077 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:52:36,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:52:36,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:52:36,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:52:36,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:52:36,435 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:52:36,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 14:52:36,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c98fae5d/15dfdf8ffcb44c4fbe04112596cd80d9/FLAG4b0539f0a [2020-08-21 14:52:36,998 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:52:36,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 14:52:37,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c98fae5d/15dfdf8ffcb44c4fbe04112596cd80d9/FLAG4b0539f0a [2020-08-21 14:52:37,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c98fae5d/15dfdf8ffcb44c4fbe04112596cd80d9 [2020-08-21 14:52:37,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:52:37,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:52:37,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:52:37,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:52:37,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:52:37,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37, skipping insertion in model container [2020-08-21 14:52:37,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:52:37,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:52:37,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:52:37,666 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:52:37,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:52:37,796 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:52:37,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37 WrapperNode [2020-08-21 14:52:37,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:52:37,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:52:37,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:52:37,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:52:37,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:52:37,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:52:37,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:52:37,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:52:37,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (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 14:52:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:52:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:52:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 14:52:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 14:52:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:52:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:52:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 14:52:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 14:52:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:52:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 14:52:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:52:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:52:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:52:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 14:52:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:52:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:52:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:52:38,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:52:38,368 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 14:52:38,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:52:38 BoogieIcfgContainer [2020-08-21 14:52:38,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:52:38,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:52:38,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:52:38,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:52:38,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:52:37" (1/3) ... [2020-08-21 14:52:38,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254de2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:52:38, skipping insertion in model container [2020-08-21 14:52:38,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37" (2/3) ... [2020-08-21 14:52:38,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254de2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:52:38, skipping insertion in model container [2020-08-21 14:52:38,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:52:38" (3/3) ... [2020-08-21 14:52:38,380 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-21 14:52:38,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:52:38,398 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:52:38,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:52:38,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:52:38,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:52:38,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:52:38,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:52:38,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:52:38,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:52:38,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:52:38,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:52:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 14:52:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 14:52:38,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:52:38,465 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 14:52:38,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:52:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:52:38,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-21 14:52:38,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:52:38,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515307544] [2020-08-21 14:52:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:52:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:52:38,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:52:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:52:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:52:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:52:38,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:52:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:52:38,716 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 14:52:38,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515307544] [2020-08-21 14:52:38,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:52:38,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:52:38,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52508418] [2020-08-21 14:52:38,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:52:38,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:52:38,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:52:38,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:52:38,746 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 14:52:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:52:38,986 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 14:52:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:52:38,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 14:52:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:52:39,000 INFO L225 Difference]: With dead ends: 86 [2020-08-21 14:52:39,001 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 14:52:39,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:52:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 14:52:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 14:52:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 14:52:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 14:52:39,052 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 14:52:39,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:52:39,053 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 14:52:39,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:52:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 14:52:39,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 14:52:39,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:52:39,055 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 14:52:39,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:52:39,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:52:39,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:52:39,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-21 14:52:39,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:52:39,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727910886] [2020-08-21 14:52:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:52:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:52:39,147 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:52:39,148 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:52:39,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:52:39,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:52:39 BoogieIcfgContainer [2020-08-21 14:52:39,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:52:39,203 INFO L168 Benchmark]: Toolchain (without parser) took 1827.43 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 100.2 MB in the beginning and 105.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:39,204 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:52:39,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.08 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 100.0 MB in the beginning and 177.4 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:39,209 INFO L168 Benchmark]: Boogie Preprocessor took 53.44 ms. Allocated memory is still 199.2 MB. Free memory was 177.4 MB in the beginning and 175.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:39,210 INFO L168 Benchmark]: RCFGBuilder took 519.72 ms. Allocated memory is still 199.2 MB. Free memory was 175.1 MB in the beginning and 153.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:39,211 INFO L168 Benchmark]: TraceAbstraction took 822.07 ms. Allocated memory is still 199.2 MB. Free memory was 152.6 MB in the beginning and 105.2 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:39,216 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.08 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 100.0 MB in the beginning and 177.4 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.44 ms. Allocated memory is still 199.2 MB. Free memory was 177.4 MB in the beginning and 175.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.72 ms. Allocated memory is still 199.2 MB. Free memory was 175.1 MB in the beginning and 153.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 822.07 ms. Allocated memory is still 199.2 MB. Free memory was 152.6 MB in the beginning and 105.2 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 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, 0.0s 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...