/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:55:06,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:55:06,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:55:06,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:55:06,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:55:06,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:55:06,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:55:06,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:55:06,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:55:06,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:55:06,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:55:06,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:55:06,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:55:06,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:55:06,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:55:06,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:55:06,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:55:06,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:55:06,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:55:06,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:55:06,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:55:06,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:55:06,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:55:06,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:55:06,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:55:06,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:55:06,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:55:06,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:55:06,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:55:06,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 01:55:06,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:55:06,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:55:06,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:55:06,956 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 [2020-08-19 01:55:06,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:55:06,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:55:06,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:55:06,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:55:06,999 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:55:06,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:55:07,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:55:07,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:55:07,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:55:07,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:55:07,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:55:07,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:55:07,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:55:07,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:55:07,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:55:07,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:55:07,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:55:07,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:55:07,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:55:07,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:55:07,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:55:07,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:55:07,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:55:07,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:55:07,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:55:07,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:55:07,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:55:07,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:55:07,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:55:07,005 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:55:07,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:55:07,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:55:07,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:55:07,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:55:07,330 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:55:07,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 01:55:07,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e41d34e/c3869a7cc62b49a3bda93d4831852b8e/FLAG9401c3eb3 [2020-08-19 01:55:07,875 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:55:07,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 01:55:07,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e41d34e/c3869a7cc62b49a3bda93d4831852b8e/FLAG9401c3eb3 [2020-08-19 01:55:08,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e41d34e/c3869a7cc62b49a3bda93d4831852b8e [2020-08-19 01:55:08,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:55:08,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:55:08,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:55:08,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:55:08,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:55:08,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b1442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08, skipping insertion in model container [2020-08-19 01:55:08,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:55:08,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:55:08,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:55:08,517 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:55:08,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:55:08,655 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:55:08,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08 WrapperNode [2020-08-19 01:55:08,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:55:08,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:55:08,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:55:08,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:55:08,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (1/1) ... [2020-08-19 01:55:08,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:55:08,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:55:08,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:55:08,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:55:08,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (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 [2020-08-19 01:55:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:55:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:55:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 01:55:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-19 01:55:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:55:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:55:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 01:55:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 01:55:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:55:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:55:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:55:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:55:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:55:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:55:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-19 01:55:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:55:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:55:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 01:55:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:55:09,235 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:55:09,235 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 01:55:09,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:55:09 BoogieIcfgContainer [2020-08-19 01:55:09,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:55:09,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:55:09,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:55:09,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:55:09,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:55:08" (1/3) ... [2020-08-19 01:55:09,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66425aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:55:09, skipping insertion in model container [2020-08-19 01:55:09,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:55:08" (2/3) ... [2020-08-19 01:55:09,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66425aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:55:09, skipping insertion in model container [2020-08-19 01:55:09,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:55:09" (3/3) ... [2020-08-19 01:55:09,249 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-19 01:55:09,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:55:09,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:55:09,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:55:09,299 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:55:09,299 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:55:09,300 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:55:09,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:55:09,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:55:09,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:55:09,301 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:55:09,301 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:55:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-19 01:55:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 01:55:09,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:55:09,330 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] [2020-08-19 01:55:09,331 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:55:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:55:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-19 01:55:09,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:55:09,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805195442] [2020-08-19 01:55:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:55:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:55:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:55:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:55:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:55:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:55:09,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805195442] [2020-08-19 01:55:09,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:55:09,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:55:09,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667700291] [2020-08-19 01:55:09,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:55:09,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:55:09,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:55:09,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:55:09,668 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-19 01:55:09,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:55:09,921 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-19 01:55:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:55:09,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 01:55:09,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:55:09,936 INFO L225 Difference]: With dead ends: 112 [2020-08-19 01:55:09,936 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 01:55:09,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:55:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 01:55:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-19 01:55:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 01:55:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-19 01:55:09,994 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-19 01:55:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:55:09,995 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-19 01:55:09,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:55:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-19 01:55:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 01:55:09,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:55:09,997 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] [2020-08-19 01:55:09,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:55:09,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:55:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:55:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-19 01:55:09,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:55:09,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549517429] [2020-08-19 01:55:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:55:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:55:10,115 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:55:10,115 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:55:10,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:55:10,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:55:10 BoogieIcfgContainer [2020-08-19 01:55:10,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:55:10,148 INFO L168 Benchmark]: Toolchain (without parser) took 1908.84 ms. Allocated memory was 142.6 MB in the beginning and 232.3 MB in the end (delta: 89.7 MB). Free memory was 104.5 MB in the beginning and 199.3 MB in the end (delta: -94.8 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:10,149 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:55:10,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.09 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 104.3 MB in the beginning and 180.1 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:10,151 INFO L168 Benchmark]: Boogie Preprocessor took 52.69 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 177.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:10,152 INFO L168 Benchmark]: RCFGBuilder took 530.34 ms. Allocated memory is still 203.9 MB. Free memory was 177.6 MB in the beginning and 150.2 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:10,153 INFO L168 Benchmark]: TraceAbstraction took 903.99 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 149.5 MB in the beginning and 199.3 MB in the end (delta: -49.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:55:10,157 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 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.09 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 104.3 MB in the beginning and 180.1 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.69 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 177.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 530.34 ms. Allocated memory is still 203.9 MB. Free memory was 177.6 MB in the beginning and 150.2 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 903.99 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 149.5 MB in the beginning and 199.3 MB in the end (delta: -49.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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...