/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:05:41,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:05:41,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:05:41,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:05:41,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:05:41,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:05:41,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:05:41,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:05:41,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:05:41,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:05:41,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:05:41,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:05:41,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:05:41,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:05:41,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:05:41,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:05:41,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:05:41,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:05:41,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:05:41,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:05:41,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:05:41,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:05:41,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:05:41,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:05:41,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 12:05:41,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:05:41,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:05:41,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:05:41,143 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 12:05:41,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:05:41,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:05:41,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:05:41,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:05:41,165 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:05:41,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:05:41,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:05:41,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:05:41,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:05:41,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:05:41,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:05:41,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:05:41,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:05:41,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:05:41,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:05:41,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:05:41,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:05:41,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:05:41,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:05:41,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:05:41,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:05:41,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:05:41,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:05:41,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:05:41,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:05:41,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:05:41,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:05:41,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:05:41,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:05:41,170 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:05:41,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:05:41,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:05:41,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:05:41,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:05:41,527 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:05:41,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 12:05:41,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1249a005/c37291fcda0b41a3a1363891ed0171c3/FLAG0a6719ddf [2020-08-18 12:05:42,093 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:05:42,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 12:05:42,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1249a005/c37291fcda0b41a3a1363891ed0171c3/FLAG0a6719ddf [2020-08-18 12:05:42,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1249a005/c37291fcda0b41a3a1363891ed0171c3 [2020-08-18 12:05:42,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:05:42,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:05:42,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:05:42,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:05:42,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:05:42,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:42,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172792f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42, skipping insertion in model container [2020-08-18 12:05:42,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:42,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:05:42,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:05:42,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:05:42,739 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:05:42,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:05:42,933 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:05:42,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42 WrapperNode [2020-08-18 12:05:42,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:05:42,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:05:42,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:05:42,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:05:42,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:42,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:42,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:42,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:42,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:42,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:43,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (1/1) ... [2020-08-18 12:05:43,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:05:43,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:05:43,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:05:43,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:05:43,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (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 12:05:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:05:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:05:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 12:05:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 12:05:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 12:05:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:05:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:05:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 12:05:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 12:05:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 12:05:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:05:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 12:05:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:05:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:05:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 12:05:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:05:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 12:05:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:05:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:05:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 12:05:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:05:43,694 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:05:43,694 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 12:05:43,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:05:43 BoogieIcfgContainer [2020-08-18 12:05:43,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:05:43,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:05:43,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:05:43,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:05:43,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:05:42" (1/3) ... [2020-08-18 12:05:43,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6057ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:05:43, skipping insertion in model container [2020-08-18 12:05:43,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:42" (2/3) ... [2020-08-18 12:05:43,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6057ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:05:43, skipping insertion in model container [2020-08-18 12:05:43,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:05:43" (3/3) ... [2020-08-18 12:05:43,716 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-18 12:05:43,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:05:43,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:05:43,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:05:43,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:05:43,774 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:05:43,774 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:05:43,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:05:43,775 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:05:43,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:05:43,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:05:43,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:05:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-18 12:05:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 12:05:43,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:05:43,807 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 12:05:43,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:05:43,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:05:43,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-18 12:05:43,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:05:43,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141125070] [2020-08-18 12:05:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:05:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:05:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:05:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:05:44,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:05:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:05:44,086 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 12:05:44,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141125070] [2020-08-18 12:05:44,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:05:44,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:05:44,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480696061] [2020-08-18 12:05:44,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:05:44,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:05:44,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:05:44,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:05:44,114 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-18 12:05:44,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:05:44,492 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-18 12:05:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 12:05:44,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 12:05:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:05:44,505 INFO L225 Difference]: With dead ends: 142 [2020-08-18 12:05:44,506 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 12:05:44,510 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 12:05:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 12:05:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-18 12:05:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 12:05:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-18 12:05:44,561 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-18 12:05:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:05:44,562 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-18 12:05:44,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:05:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-18 12:05:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 12:05:44,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:05:44,564 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] [2020-08-18 12:05:44,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:05:44,564 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:05:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:05:44,565 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-18 12:05:44,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:05:44,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894231517] [2020-08-18 12:05:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:05:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:05:44,651 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:05:44,652 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:05:44,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:05:44,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:05:44 BoogieIcfgContainer [2020-08-18 12:05:44,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:05:44,683 INFO L168 Benchmark]: Toolchain (without parser) took 2242.72 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.8 MB in the beginning and 194.3 MB in the end (delta: -91.5 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:44,684 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 12:05:44,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.35 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 177.6 MB in the end (delta: -75.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:44,686 INFO L168 Benchmark]: Boogie Preprocessor took 74.32 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:44,687 INFO L168 Benchmark]: RCFGBuilder took 694.32 ms. Allocated memory is still 202.4 MB. Free memory was 174.8 MB in the beginning and 138.6 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:44,688 INFO L168 Benchmark]: TraceAbstraction took 974.82 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.0 MB in the beginning and 194.3 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 12:05:44,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 494.35 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 177.6 MB in the end (delta: -75.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.32 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 694.32 ms. Allocated memory is still 202.4 MB. Free memory was 174.8 MB in the beginning and 138.6 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 974.82 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.0 MB in the beginning and 194.3 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=74occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...