/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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:52:35,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:52:35,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:52:35,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:52:35,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:52:35,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:52:35,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:52:35,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:52:35,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:52:35,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:52:35,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:52:35,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:52:35,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:52:35,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:52:35,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:52:35,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:52:35,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:52:35,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:52:35,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:52:35,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:52:35,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:52:35,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:52:35,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:52:35,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:52:35,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 14:52:35,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:52:35,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:52:35,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:52:35,901 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 14:52:35,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:52:35,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:52:35,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:52:35,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:52:35,952 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:52:35,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:52:35,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:52:35,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:52:35,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:52:35,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:52:35,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:52:35,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:52:35,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:52:35,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:52:35,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:52:35,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:52:35,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:52:35,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:52:35,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:52:35,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:52:35,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:52:35,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:52:35,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:52:35,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:52:35,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:52:35,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:52:35,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:52:35,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:52:35,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:52:35,962 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 14:52:36,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:52:36,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:52:36,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:52:36,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:52:36,317 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:52:36,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-08-21 14:52:36,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87a6d732/b7b5d3e1f50440bf882b68ef24a75f30/FLAG7a872f589 [2020-08-21 14:52:36,861 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:52:36,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-08-21 14:52:36,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87a6d732/b7b5d3e1f50440bf882b68ef24a75f30/FLAG7a872f589 [2020-08-21 14:52:37,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87a6d732/b7b5d3e1f50440bf882b68ef24a75f30 [2020-08-21 14:52:37,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:52:37,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:52:37,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:52:37,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:52:37,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:52:37,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 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 14:52:37,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:52:37" (1/1) ... [2020-08-21 14:52:37,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:52:37,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:52:37,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:52:37,472 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:52:37,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:52:37,610 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:52:37,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:52:37 WrapperNode [2020-08-21 14:52:37,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:52:37,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:52:37,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:52:37,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:52:37,624 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 14:52:37,624 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 14:52:37,635 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 14:52:37,635 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 14:52:37,649 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 14:52:37,656 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 14:52:37,658 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 14:52:37,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:52:37,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:52:37,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:52:37,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:52:37,663 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 14:52:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:52:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:52:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 14:52:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-21 14:52:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 14:52:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:52:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:52:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 14:52:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-21 14:52:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:52:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 14:52:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:52:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:52:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:52:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 14:52:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 14:52:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:52:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:52:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:52:38,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:52:38,102 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-21 14:52:38,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:52:38 BoogieIcfgContainer [2020-08-21 14:52:38,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:52:38,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:52:38,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:52:38,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:52:38,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:52:37" (1/3) ... [2020-08-21 14:52:38,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2206eefc 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 14:52:38,114 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 14:52:38,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2206eefc 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 14:52:38,115 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 14:52:38,117 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072c.c [2020-08-21 14:52:38,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:52:38,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:52:38,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:52:38,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:52:38,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:52:38,188 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:52:38,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:52:38,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:52:38,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:52:38,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:52:38,189 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:52:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-08-21 14:52:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 14:52:38,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:52:38,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:52:38,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:52:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:52:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1730648367, now seen corresponding path program 1 times [2020-08-21 14:52:38,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:52:38,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034764371] [2020-08-21 14:52:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:52:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:52:38,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:52:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:52:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:52:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:52:38,479 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 14:52:38,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034764371] [2020-08-21 14:52:38,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:52:38,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:52:38,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818621843] [2020-08-21 14:52:38,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:52:38,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:52:38,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:52:38,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:52:38,506 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-08-21 14:52:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:52:38,703 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-08-21 14:52:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:52:38,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 14:52:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:52:38,716 INFO L225 Difference]: With dead ends: 74 [2020-08-21 14:52:38,717 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 14:52:38,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 14:52:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 14:52:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 14:52:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 14:52:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-21 14:52:38,767 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 19 [2020-08-21 14:52:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:52:38,767 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-21 14:52:38,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:52:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-21 14:52:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 14:52:38,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:52:38,769 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] [2020-08-21 14:52:38,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:52:38,770 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:52:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:52:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1938753225, now seen corresponding path program 1 times [2020-08-21 14:52:38,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:52:38,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555272537] [2020-08-21 14:52:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:52:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:52:38,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:52:38,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:52:38,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:52:38,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:52:38 BoogieIcfgContainer [2020-08-21 14:52:38,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:52:38,906 INFO L168 Benchmark]: Toolchain (without parser) took 1678.55 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 101.3 MB in the beginning and 108.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:38,907 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:52:38,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.05 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 101.1 MB in the beginning and 177.7 MB in the end (delta: -76.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:38,909 INFO L168 Benchmark]: Boogie Preprocessor took 49.39 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 175.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:38,910 INFO L168 Benchmark]: RCFGBuilder took 446.34 ms. Allocated memory is still 199.8 MB. Free memory was 175.0 MB in the beginning and 151.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:38,911 INFO L168 Benchmark]: TraceAbstraction took 793.40 ms. Allocated memory is still 199.8 MB. Free memory was 150.4 MB in the beginning and 108.0 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:52:38,915 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 384.05 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 101.1 MB in the beginning and 177.7 MB in the end (delta: -76.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.39 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 175.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.34 ms. Allocated memory is still 199.8 MB. Free memory was 175.0 MB in the beginning and 151.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 793.40 ms. Allocated memory is still 199.8 MB. Free memory was 150.4 MB in the beginning and 108.0 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 81, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 85. Possible FailurePath: [L81] double x = -0.0; [L82] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L82] RET, EXPR trunc_double(x) [L82] double res = trunc_double(x); [L85] EXPR res == -0.0 && __signbit_double(res) == 1 [L85] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 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: 37 SDtfs, 32 SDslu, 5 SDs, 0 SdLazy, 46 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 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...