/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:03:38,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:03:38,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:03:38,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:03:38,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:03:38,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:03:38,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:03:38,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:03:38,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:03:38,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:03:38,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:03:38,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:03:38,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:03:38,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:03:38,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:03:38,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:03:38,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:03:38,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:03:38,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:03:38,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:03:38,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:03:38,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:03:38,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:03:38,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:03:38,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:03:38,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:03:38,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:03:38,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:03:38,305 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 21:03:38,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:03:38,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:03:38,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:03:38,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:03:38,351 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:03:38,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:03:38,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:03:38,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:03:38,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:03:38,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:03:38,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:03:38,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:03:38,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:03:38,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:03:38,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:03:38,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:03:38,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:03:38,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:03:38,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:03:38,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:03:38,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:03:38,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:03:38,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:03:38,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:03:38,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:03:38,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:03:38,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:03:38,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:03:38,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:03:38,359 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:03:38,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:03:38,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:03:38,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:03:38,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:03:38,663 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:03:38,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 21:03:38,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/695d7ca1d/cb0258a7f25147179989bc3a4b6c49c0/FLAGac6002819 [2020-08-18 21:03:39,209 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:03:39,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 21:03:39,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/695d7ca1d/cb0258a7f25147179989bc3a4b6c49c0/FLAGac6002819 [2020-08-18 21:03:39,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/695d7ca1d/cb0258a7f25147179989bc3a4b6c49c0 [2020-08-18 21:03:39,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:03:39,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:03:39,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:03:39,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:03:39,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:03:39,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea71ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39, skipping insertion in model container [2020-08-18 21:03:39,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:03:39,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:03:39,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:03:39,808 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:03:39,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:03:39,961 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:03:39,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39 WrapperNode [2020-08-18 21:03:39,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:03:39,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:03:39,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:03:39,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:03:39,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:40,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:40,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:40,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:40,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:03:40,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:03:40,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:03:40,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:03:40,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (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 21:03:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:03:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:03:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 21:03:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 21:03:40,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:03:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:03:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 21:03:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 21:03:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:03:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 21:03:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:03:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:03:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:03:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 21:03:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:03:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:03:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:03:40,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:03:40,544 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 21:03:40,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:03:40 BoogieIcfgContainer [2020-08-18 21:03:40,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:03:40,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:03:40,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:03:40,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:03:40,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:03:39" (1/3) ... [2020-08-18 21:03:40,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c111294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:03:40, skipping insertion in model container [2020-08-18 21:03:40,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (2/3) ... [2020-08-18 21:03:40,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c111294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:03:40, skipping insertion in model container [2020-08-18 21:03:40,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:03:40" (3/3) ... [2020-08-18 21:03:40,558 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-18 21:03:40,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:03:40,576 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:03:40,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:03:40,612 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:03:40,612 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:03:40,612 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:03:40,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:03:40,613 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:03:40,613 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:03:40,613 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:03:40,613 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:03:40,632 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 21:03:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 21:03:40,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:40,640 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] [2020-08-18 21:03:40,641 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:40,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:40,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-18 21:03:40,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:40,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341698278] [2020-08-18 21:03:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:03:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,924 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 21:03:40,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341698278] [2020-08-18 21:03:40,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:03:40,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:03:40,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635513301] [2020-08-18 21:03:40,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:03:40,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:03:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:03:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:03:40,956 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 21:03:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:03:41,188 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 21:03:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:03:41,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 21:03:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:03:41,203 INFO L225 Difference]: With dead ends: 86 [2020-08-18 21:03:41,203 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 21:03:41,207 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 [2020-08-18 21:03:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 21:03:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 21:03:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 21:03:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 21:03:41,255 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 21:03:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:03:41,256 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 21:03:41,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:03:41,256 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 21:03:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 21:03:41,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:41,258 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] [2020-08-18 21:03:41,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:03:41,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:41,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-18 21:03:41,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:41,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603829055] [2020-08-18 21:03:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:03:41,334 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:03:41,335 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:03:41,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:03:41,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:03:41 BoogieIcfgContainer [2020-08-18 21:03:41,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:03:41,363 INFO L168 Benchmark]: Toolchain (without parser) took 1754.15 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 110.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:41,364 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:03:41,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.85 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 182.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:41,366 INFO L168 Benchmark]: Boogie Preprocessor took 51.85 ms. Allocated memory is still 205.0 MB. Free memory was 182.4 MB in the beginning and 179.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:41,367 INFO L168 Benchmark]: RCFGBuilder took 532.64 ms. Allocated memory is still 205.0 MB. Free memory was 179.8 MB in the beginning and 158.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:41,368 INFO L168 Benchmark]: TraceAbstraction took 810.13 ms. Allocated memory is still 205.0 MB. Free memory was 157.4 MB in the beginning and 110.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:41,376 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.85 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 182.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.85 ms. Allocated memory is still 205.0 MB. Free memory was 182.4 MB in the beginning and 179.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.64 ms. Allocated memory is still 205.0 MB. Free memory was 179.8 MB in the beginning and 158.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 810.13 ms. Allocated memory is still 205.0 MB. Free memory was 157.4 MB in the beginning and 110.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...