/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 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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:04:17,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:04:17,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:04:17,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:04:17,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:04:17,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:04:17,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:04:17,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:04:17,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:04:17,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:04:17,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:04:17,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:04:17,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:04:17,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:04:17,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:04:17,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:04:17,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:04:17,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:04:17,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:04:17,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:04:17,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:04:17,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:04:17,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:04:17,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:04:17,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:04:17,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:04:17,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:04:17,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:04:17,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:04:17,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 14:04:17,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:04:17,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:04:17,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:04:17,168 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 14:04:17,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:04:17,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:04:17,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:04:17,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:04:17,226 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:04:17,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:04:17,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:04:17,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:04:17,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:04:17,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:04:17,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:04:17,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:04:17,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:04:17,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:04:17,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:04:17,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:04:17,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:04:17,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:04:17,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:04:17,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:04:17,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:04:17,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:04:17,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:04:17,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:04:17,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:04:17,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:04:17,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:04:17,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:04:17,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:04:17,232 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 -> log-additional-information=true; [2020-08-21 14:04:17,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:04:17,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:04:17,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:04:17,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:04:17,597 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:04:17,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-21 14:04:17,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1843dced/609495e8dc474dffbb69a2e1e7fb3e2e/FLAGcef72c93b [2020-08-21 14:04:18,152 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:04:18,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-21 14:04:18,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1843dced/609495e8dc474dffbb69a2e1e7fb3e2e/FLAGcef72c93b [2020-08-21 14:04:18,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1843dced/609495e8dc474dffbb69a2e1e7fb3e2e [2020-08-21 14:04:18,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:04:18,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:04:18,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:18,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:04:18,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:04:18,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbc03b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18, skipping insertion in model container [2020-08-21 14:04:18,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:04:18,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:04:18,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:18,726 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:04:18,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:18,869 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:04:18,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18 WrapperNode [2020-08-21 14:04:18,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:18,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:04:18,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:04:18,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:04:18,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (1/1) ... [2020-08-21 14:04:18,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:04:18,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:04:18,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:04:18,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:04:18,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (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 14:04:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:04:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:04:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 14:04:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 14:04:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:04:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:04:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 14:04:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:04:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 14:04:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:04:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:04:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:04:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 14:04:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 14:04:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:04:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:04:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:04:19,326 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:04:19,327 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 14:04:19,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:19 BoogieIcfgContainer [2020-08-21 14:04:19,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:04:19,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:04:19,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:04:19,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:04:19,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:04:18" (1/3) ... [2020-08-21 14:04:19,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6db6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:19, skipping insertion in model container [2020-08-21 14:04:19,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:18" (2/3) ... [2020-08-21 14:04:19,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6db6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:19, skipping insertion in model container [2020-08-21 14:04:19,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:19" (3/3) ... [2020-08-21 14:04:19,341 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-21 14:04:19,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:04:19,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:04:19,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:04:19,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:04:19,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:04:19,419 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:04:19,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:04:19,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:04:19,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:04:19,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:04:19,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:04:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 14:04:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 14:04:19,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:19,456 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 14:04:19,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-21 14:04:19,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:19,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623647486] [2020-08-21 14:04:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:19,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:19,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:04:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:19,757 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 14:04:19,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623647486] [2020-08-21 14:04:19,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:19,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:04:19,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31685000] [2020-08-21 14:04:19,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:04:19,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:19,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:04:19,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:04:19,782 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 14:04:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:20,038 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 14:04:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:04:20,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 14:04:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:20,053 INFO L225 Difference]: With dead ends: 86 [2020-08-21 14:04:20,053 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 14:04:20,058 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 14:04:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 14:04:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 14:04:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 14:04:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 14:04:20,105 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 14:04:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:20,106 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 14:04:20,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:04:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 14:04:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 14:04:20,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:20,108 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 14:04:20,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:04:20,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-21 14:04:20,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:20,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492172334] [2020-08-21 14:04:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:04:20,186 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:04:20,188 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:04:20,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:04:20,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:04:20 BoogieIcfgContainer [2020-08-21 14:04:20,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:04:20,219 INFO L168 Benchmark]: Toolchain (without parser) took 1725.29 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 105.3 MB in the beginning and 109.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:20,220 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:04:20,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.29 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 105.1 MB in the beginning and 182.1 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:20,222 INFO L168 Benchmark]: Boogie Preprocessor took 45.02 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 180.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:20,222 INFO L168 Benchmark]: RCFGBuilder took 416.79 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 157.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:20,223 INFO L168 Benchmark]: TraceAbstraction took 881.31 ms. Allocated memory is still 203.9 MB. Free memory was 157.3 MB in the beginning and 109.7 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:20,227 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 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.29 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 105.1 MB in the beginning and 182.1 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.02 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 180.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.79 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 157.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 881.31 ms. Allocated memory is still 203.9 MB. Free memory was 157.3 MB in the beginning and 109.7 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __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...