/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:03:41,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:03:41,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:03:41,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 21:03:41,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:03:41,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:03:41,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:03:41,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:03:41,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:03:41,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:03:41,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:03:41,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:03:41,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:03:41,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:03:41,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:03:41,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:03:41,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:03:41,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:03:41,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:03:41,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:03:41,773 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 21:03:41,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:03:41,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:03:41,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:03:41,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:03:41,831 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:03:41,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:03:41,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:03:41,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:03:41,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:03:41,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:03:41,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:03:41,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:03:41,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:03:41,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:03:41,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:03:41,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:03:41,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:03:41,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:03:41,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:03:41,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:03:41,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:03:41,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:03:41,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:03:41,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:03:41,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:03:41,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:03:41,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:03:41,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:03:41,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:03:41,838 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 21:03:42,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:03:42,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:03:42,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:03:42,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:03:42,212 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:03:42,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 21:03:42,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c819445ca/6ecb1665e468445a9e3c9f5eca02f3bd/FLAGa5390e44e [2020-08-18 21:03:42,812 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:03:42,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 21:03:42,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c819445ca/6ecb1665e468445a9e3c9f5eca02f3bd/FLAGa5390e44e [2020-08-18 21:03:43,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c819445ca/6ecb1665e468445a9e3c9f5eca02f3bd [2020-08-18 21:03:43,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:03:43,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:03:43,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:03:43,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:03:43,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:03:43,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697fd79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43, skipping insertion in model container [2020-08-18 21:03:43,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:03:43,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:03:43,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:03:43,557 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:03:43,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:03:43,631 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:03:43,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43 WrapperNode [2020-08-18 21:03:43,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:03:43,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:03:43,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:03:43,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:03:43,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (1/1) ... [2020-08-18 21:03:43,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:03:43,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:03:43,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:03:43,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:03:43,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (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 21:03:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:03:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:03:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 21:03:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 21:03:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:03:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:03:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 21:03:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 21:03:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:03:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 21:03:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:03:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:03:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 21:03:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:03:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 21:03:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:03:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:03:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 21:03:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:03:44,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:03:44,360 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 21:03:44,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:03:44 BoogieIcfgContainer [2020-08-18 21:03:44,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:03:44,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:03:44,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:03:44,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:03:44,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:03:43" (1/3) ... [2020-08-18 21:03:44,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f56cf01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:03:44, skipping insertion in model container [2020-08-18 21:03:44,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:43" (2/3) ... [2020-08-18 21:03:44,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f56cf01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:03:44, skipping insertion in model container [2020-08-18 21:03:44,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:03:44" (3/3) ... [2020-08-18 21:03:44,373 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-18 21:03:44,385 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:03:44,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:03:44,409 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:03:44,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:03:44,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:03:44,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:03:44,437 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:03:44,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:03:44,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:03:44,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:03:44,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:03:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 21:03:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 21:03:44,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:44,469 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, 1] [2020-08-18 21:03:44,470 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-18 21:03:44,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:44,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651137704] [2020-08-18 21:03:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:44,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:03:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:03:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:44,739 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 21:03:44,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651137704] [2020-08-18 21:03:44,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:03:44,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:03:44,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148473746] [2020-08-18 21:03:44,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:03:44,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:03:44,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:03:44,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:03:44,772 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 21:03:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:03:45,121 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 21:03:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:03:45,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 21:03:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:03:45,150 INFO L225 Difference]: With dead ends: 138 [2020-08-18 21:03:45,150 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 21:03:45,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 21:03:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 21:03:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 21:03:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 21:03:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 21:03:45,205 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 21:03:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:03:45,206 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 21:03:45,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:03:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 21:03:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:03:45,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:45,208 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, 1, 1, 1, 1] [2020-08-18 21:03:45,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:03:45,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-18 21:03:45,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:45,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471736168] [2020-08-18 21:03:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:03:45,346 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:03:45,346 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:03:45,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:03:45,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:03:45 BoogieIcfgContainer [2020-08-18 21:03:45,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:03:45,400 INFO L168 Benchmark]: Toolchain (without parser) took 2217.94 ms. Allocated memory was 146.3 MB in the beginning and 232.8 MB in the end (delta: 86.5 MB). Free memory was 100.4 MB in the beginning and 191.9 MB in the end (delta: -91.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:03:45,401 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 21:03:45,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.50 ms. Allocated memory was 146.3 MB in the beginning and 200.8 MB in the end (delta: 54.5 MB). Free memory was 99.9 MB in the beginning and 175.1 MB in the end (delta: -75.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:45,405 INFO L168 Benchmark]: Boogie Preprocessor took 61.32 ms. Allocated memory is still 200.8 MB. Free memory was 175.1 MB in the beginning and 172.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:45,406 INFO L168 Benchmark]: RCFGBuilder took 670.89 ms. Allocated memory is still 200.8 MB. Free memory was 172.5 MB in the beginning and 137.6 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:45,407 INFO L168 Benchmark]: TraceAbstraction took 1029.77 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 136.9 MB in the beginning and 191.9 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:03:45,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.50 ms. Allocated memory was 146.3 MB in the beginning and 200.8 MB in the end (delta: 54.5 MB). Free memory was 99.9 MB in the beginning and 175.1 MB in the end (delta: -75.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.32 ms. Allocated memory is still 200.8 MB. Free memory was 175.1 MB in the beginning and 172.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 670.89 ms. Allocated memory is still 200.8 MB. Free memory was 172.5 MB in the beginning and 137.6 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1029.77 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 136.9 MB in the beginning and 191.9 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...