/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:50:20,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:50:20,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:50:20,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:50:20,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:50:20,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:50:20,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:50:20,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:50:20,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:50:20,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:50:20,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:50:20,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:50:20,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:50:20,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:50:20,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:50:20,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:50:20,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:50:20,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:50:20,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:50:20,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:50:20,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:50:20,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:50:20,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:50:20,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:50:20,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:50:20,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:50:20,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:50:20,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:50:20,342 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 17:50:20,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:50:20,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:50:20,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:50:20,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:50:20,390 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:50:20,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:50:20,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:50:20,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:50:20,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:50:20,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:50:20,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:50:20,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:50:20,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:50:20,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:50:20,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:50:20,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:50:20,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:50:20,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:50:20,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:50:20,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:50:20,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:50:20,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:50:20,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:50:20,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:50:20,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:50:20,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:50:20,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:50:20,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:50:20,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:50:20,397 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 17:50:20,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:50:20,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:50:20,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:50:20,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:50:20,704 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:50:20,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-18 17:50:20,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc7c577d2/3ec4d58fee98437087a966d5f3d6e394/FLAG0a212ffd1 [2020-08-18 17:50:21,261 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:50:21,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-18 17:50:21,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc7c577d2/3ec4d58fee98437087a966d5f3d6e394/FLAG0a212ffd1 [2020-08-18 17:50:21,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc7c577d2/3ec4d58fee98437087a966d5f3d6e394 [2020-08-18 17:50:21,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:50:21,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:50:21,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:21,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:50:21,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:50:21,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:21" (1/1) ... [2020-08-18 17:50:21,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:21, skipping insertion in model container [2020-08-18 17:50:21,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:21" (1/1) ... [2020-08-18 17:50:21,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:50:21,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:50:21,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:21,842 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:50:21,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:22,002 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:50:22,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22 WrapperNode [2020-08-18 17:50:22,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:22,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:50:22,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:50:22,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:50:22,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (1/1) ... [2020-08-18 17:50:22,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (1/1) ... [2020-08-18 17:50:22,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (1/1) ... [2020-08-18 17:50:22,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (1/1) ... [2020-08-18 17:50:22,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (1/1) ... [2020-08-18 17:50:22,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (1/1) ... [2020-08-18 17:50:22,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (1/1) ... [2020-08-18 17:50:22,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:50:22,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:50:22,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:50:22,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:50:22,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (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 17:50:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:50:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:50:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 17:50:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 17:50:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:50:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:50:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 17:50:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 17:50:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:50:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:50:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:50:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:50:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:50:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:50:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:50:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:50:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:50:22,528 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:50:22,529 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 17:50:22,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:22 BoogieIcfgContainer [2020-08-18 17:50:22,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:50:22,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:50:22,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:50:22,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:50:22,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:50:21" (1/3) ... [2020-08-18 17:50:22,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@948f774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:22, skipping insertion in model container [2020-08-18 17:50:22,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:22" (2/3) ... [2020-08-18 17:50:22,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@948f774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:22, skipping insertion in model container [2020-08-18 17:50:22,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:22" (3/3) ... [2020-08-18 17:50:22,541 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-18 17:50:22,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:50:22,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:50:22,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:50:22,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:50:22,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:50:22,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:50:22,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:50:22,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:50:22,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:50:22,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:50:22,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:50:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-18 17:50:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 17:50:22,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:22,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:50:22,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:22,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:22,630 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-18 17:50:22,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:22,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461279266] [2020-08-18 17:50:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:50:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:50:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:22,848 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 17:50:22,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461279266] [2020-08-18 17:50:22,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:50:22,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:50:22,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501805734] [2020-08-18 17:50:22,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:50:22,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:50:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:50:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:50:22,877 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-18 17:50:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:50:23,092 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-18 17:50:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:50:23,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-18 17:50:23,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:50:23,105 INFO L225 Difference]: With dead ends: 76 [2020-08-18 17:50:23,105 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 17:50:23,109 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 17:50:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 17:50:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 17:50:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 17:50:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-18 17:50:23,152 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-18 17:50:23,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:50:23,152 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-18 17:50:23,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:50:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-18 17:50:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 17:50:23,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:23,154 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 17:50:23,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:50:23,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:23,155 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-18 17:50:23,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:23,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865142961] [2020-08-18 17:50:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:50:23,202 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:50:23,202 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:50:23,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:50:23,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:50:23 BoogieIcfgContainer [2020-08-18 17:50:23,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:50:23,231 INFO L168 Benchmark]: Toolchain (without parser) took 1626.73 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 104.1 MB in the beginning and 113.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:23,232 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 17:50:23,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.23 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 103.9 MB in the beginning and 184.1 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:23,234 INFO L168 Benchmark]: Boogie Preprocessor took 48.73 ms. Allocated memory is still 206.0 MB. Free memory was 184.1 MB in the beginning and 181.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:23,235 INFO L168 Benchmark]: RCFGBuilder took 479.24 ms. Allocated memory is still 206.0 MB. Free memory was 181.5 MB in the beginning and 159.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:23,236 INFO L168 Benchmark]: TraceAbstraction took 693.76 ms. Allocated memory is still 206.0 MB. Free memory was 159.1 MB in the beginning and 113.8 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:23,240 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.23 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 103.9 MB in the beginning and 184.1 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.73 ms. Allocated memory is still 206.0 MB. Free memory was 184.1 MB in the beginning and 181.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.24 ms. Allocated memory is still 206.0 MB. Free memory was 181.5 MB in the beginning and 159.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 693.76 ms. Allocated memory is still 206.0 MB. Free memory was 159.1 MB in the beginning and 113.8 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: 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 someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] 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; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 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: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...