/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:50:18,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:50:18,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:50:18,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:50:18,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:50:18,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:50:18,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:50:18,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:50:18,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:50:18,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:50:18,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:50:18,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:50:18,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:50:18,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:50:18,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:50:18,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:50:18,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:50:18,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:50:18,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:50:18,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:50:18,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:50:18,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:50:18,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:50:18,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:50:18,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:50:18,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:50:18,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:50:18,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:50:18,486 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 [2020-08-18 17:50:18,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:50:18,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:50:18,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:50:18,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:50:18,532 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:50:18,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:50:18,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:50:18,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:50:18,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:50:18,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:50:18,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:50:18,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:50:18,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:50:18,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:50:18,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:50:18,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:50:18,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:50:18,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:50:18,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:50:18,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:50:18,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:50:18,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:50:18,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:50:18,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:50:18,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:50:18,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:50:18,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:50:18,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:50:18,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:50:18,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:50:18,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:50:18,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:50:18,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:50:18,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:50:18,931 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:50:18,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 17:50:18,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ed9056df/de3474ea35474bcb97639272a80f5fca/FLAG2ee726c2f [2020-08-18 17:50:19,485 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:50:19,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 17:50:19,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ed9056df/de3474ea35474bcb97639272a80f5fca/FLAG2ee726c2f [2020-08-18 17:50:19,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ed9056df/de3474ea35474bcb97639272a80f5fca [2020-08-18 17:50:19,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:50:19,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:50:19,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:19,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:50:19,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:50:19,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:19" (1/1) ... [2020-08-18 17:50:19,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514343ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:19, skipping insertion in model container [2020-08-18 17:50:19,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:19" (1/1) ... [2020-08-18 17:50:19,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:50:19,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:50:20,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:20,105 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:50:20,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:20,155 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:50:20,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20 WrapperNode [2020-08-18 17:50:20,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:20,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:50:20,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:50:20,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:50:20,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (1/1) ... [2020-08-18 17:50:20,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (1/1) ... [2020-08-18 17:50:20,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (1/1) ... [2020-08-18 17:50:20,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (1/1) ... [2020-08-18 17:50:20,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (1/1) ... [2020-08-18 17:50:20,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (1/1) ... [2020-08-18 17:50:20,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (1/1) ... [2020-08-18 17:50:20,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:50:20,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:50:20,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:50:20,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:50:20,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (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 [2020-08-18 17:50:20,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:50:20,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:50:20,384 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 17:50:20,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 17:50:20,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:50:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:50:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 17:50:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:50:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:50:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:50:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:50:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:50:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:50:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 17:50:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:50:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:50:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:50:20,819 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:50:20,819 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 17:50:20,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:20 BoogieIcfgContainer [2020-08-18 17:50:20,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:50:20,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:50:20,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:50:20,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:50:20,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:50:19" (1/3) ... [2020-08-18 17:50:20,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a346d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:20, skipping insertion in model container [2020-08-18 17:50:20,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:20" (2/3) ... [2020-08-18 17:50:20,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a346d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:20, skipping insertion in model container [2020-08-18 17:50:20,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:20" (3/3) ... [2020-08-18 17:50:20,832 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-18 17:50:20,843 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:50:20,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:50:20,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:50:20,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:50:20,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:50:20,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:50:20,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:50:20,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:50:20,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:50:20,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:50:20,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:50:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-18 17:50:20,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 17:50:20,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:20,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:50:20,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-18 17:50:20,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:20,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750417244] [2020-08-18 17:50:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:50:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:50:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:50:21,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750417244] [2020-08-18 17:50:21,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:50:21,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:50:21,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063297171] [2020-08-18 17:50:21,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:50:21,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:50:21,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:50:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:50:21,171 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-18 17:50:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:50:21,430 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-18 17:50:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:50:21,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 17:50:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:50:21,442 INFO L225 Difference]: With dead ends: 94 [2020-08-18 17:50:21,443 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 17:50:21,446 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 [2020-08-18 17:50:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 17:50:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-18 17:50:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 17:50:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-18 17:50:21,495 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-18 17:50:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:50:21,496 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-18 17:50:21,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:50:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-18 17:50:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 17:50:21,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:21,498 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] [2020-08-18 17:50:21,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:50:21,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-18 17:50:21,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:21,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389355869] [2020-08-18 17:50:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:50:21,568 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:50:21,569 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:50:21,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:50:21,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:50:21 BoogieIcfgContainer [2020-08-18 17:50:21,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:50:21,619 INFO L168 Benchmark]: Toolchain (without parser) took 1783.47 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 102.1 MB in the beginning and 104.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:21,620 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-18 17:50:21,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.59 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 90.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:21,622 INFO L168 Benchmark]: Boogie Preprocessor took 147.16 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 90.0 MB in the beginning and 176.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:21,623 INFO L168 Benchmark]: RCFGBuilder took 518.62 ms. Allocated memory is still 200.3 MB. Free memory was 176.5 MB in the beginning and 153.1 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:21,624 INFO L168 Benchmark]: TraceAbstraction took 788.19 ms. Allocated memory is still 200.3 MB. Free memory was 152.2 MB in the beginning and 104.2 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:21,628 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.59 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 90.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.16 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 90.0 MB in the beginning and 176.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 518.62 ms. Allocated memory is still 200.3 MB. Free memory was 176.5 MB in the beginning and 153.1 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 788.19 ms. Allocated memory is still 200.3 MB. Free memory was 152.2 MB in the beginning and 104.2 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: 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 someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] 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; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 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=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...