/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 17:17:50,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:17:50,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:17:50,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:17:50,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:17:50,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:17:50,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:17:50,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:17:50,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:17:50,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:17:50,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:17:50,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:17:50,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:17:50,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:17:50,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:17:50,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:17:50,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:17:50,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:17:50,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:17:50,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:17:50,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:17:50,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:17:50,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:17:50,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:17:50,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:17:50,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:17:50,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:17:50,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:17:50,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:17:50,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:17:50,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:17:50,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:17:50,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:17:50,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:17:50,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:17:50,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:17:50,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:17:50,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:17:50,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:17:50,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:17:50,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:17:50,103 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 [2020-08-21 17:17:50,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:17:50,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:17:50,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:17:50,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:17:50,153 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:17:50,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:17:50,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:17:50,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:17:50,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:17:50,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:17:50,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:17:50,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:17:50,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:17:50,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:17:50,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:17:50,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:17:50,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:17:50,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:17:50,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:17:50,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:17:50,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:17:50,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:50,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:17:50,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:17:50,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:17:50,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:17:50,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:17:50,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:17:50,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:17:50,160 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:17:50,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:17:50,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:17:50,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:17:50,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:17:50,471 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:17:50,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-21 17:17:50,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe6dd0c3b/7a95652e729d4025b6bee3bd72da8feb/FLAG7436f0bd5 [2020-08-21 17:17:50,964 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:17:50,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-21 17:17:50,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe6dd0c3b/7a95652e729d4025b6bee3bd72da8feb/FLAG7436f0bd5 [2020-08-21 17:17:51,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe6dd0c3b/7a95652e729d4025b6bee3bd72da8feb [2020-08-21 17:17:51,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:17:51,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:17:51,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:51,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:17:51,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:17:51,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700715c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51, skipping insertion in model container [2020-08-21 17:17:51,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:17:51,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:17:51,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:51,695 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:17:51,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:51,860 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:17:51,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51 WrapperNode [2020-08-21 17:17:51,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:51,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:17:51,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:17:51,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:17:51,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (1/1) ... [2020-08-21 17:17:51,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:17:51,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:17:51,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:17:51,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:17:51,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (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 [2020-08-21 17:17:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:17:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:17:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-21 17:17:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-21 17:17:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:17:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:17:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 17:17:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-21 17:17:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:17:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 17:17:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:17:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:17:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 17:17:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:17:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-21 17:17:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:17:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:17:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 17:17:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:17:52,414 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:17:52,414 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-21 17:17:52,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:52 BoogieIcfgContainer [2020-08-21 17:17:52,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:17:52,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:17:52,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:17:52,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:17:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:17:51" (1/3) ... [2020-08-21 17:17:52,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cace0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:52, skipping insertion in model container [2020-08-21 17:17:52,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:51" (2/3) ... [2020-08-21 17:17:52,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cace0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:52, skipping insertion in model container [2020-08-21 17:17:52,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:52" (3/3) ... [2020-08-21 17:17:52,429 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-21 17:17:52,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:17:52,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:17:52,470 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:17:52,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:17:52,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:17:52,510 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:17:52,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:17:52,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:17:52,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:17:52,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:17:52,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:17:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-21 17:17:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 17:17:52,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:52,560 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] [2020-08-21 17:17:52,560 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:52,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:52,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-21 17:17:52,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:52,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085761139] [2020-08-21 17:17:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:17:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:17:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:17:52,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085761139] [2020-08-21 17:17:52,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:17:52,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:17:52,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630773294] [2020-08-21 17:17:52,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:17:52,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:17:52,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:17:52,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:17:52,855 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-21 17:17:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:17:53,113 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-21 17:17:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:17:53,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 17:17:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:17:53,127 INFO L225 Difference]: With dead ends: 112 [2020-08-21 17:17:53,127 INFO L226 Difference]: Without dead ends: 55 [2020-08-21 17:17:53,132 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 [2020-08-21 17:17:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-21 17:17:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-21 17:17:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-21 17:17:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-21 17:17:53,185 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-21 17:17:53,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:17:53,185 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-21 17:17:53,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:17:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-21 17:17:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 17:17:53,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:53,188 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] [2020-08-21 17:17:53,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:17:53,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-21 17:17:53,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:53,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220826558] [2020-08-21 17:17:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:17:53,307 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:17:53,308 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:17:53,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:17:53,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:17:53 BoogieIcfgContainer [2020-08-21 17:17:53,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:17:53,337 INFO L168 Benchmark]: Toolchain (without parser) took 1938.36 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 94.8 MB in the end (delta: 8.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:53,338 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:17:53,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 180.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:53,341 INFO L168 Benchmark]: Boogie Preprocessor took 56.15 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:53,342 INFO L168 Benchmark]: RCFGBuilder took 502.29 ms. Allocated memory is still 203.4 MB. Free memory was 177.3 MB in the beginning and 149.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:53,342 INFO L168 Benchmark]: TraceAbstraction took 912.60 ms. Allocated memory is still 203.4 MB. Free memory was 148.7 MB in the beginning and 94.8 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:53,347 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 461.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 180.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.15 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.29 ms. Allocated memory is still 203.4 MB. Free memory was 177.3 MB in the beginning and 149.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 912.60 ms. Allocated memory is still 203.4 MB. Free memory was 148.7 MB in the beginning and 94.8 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 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, 0.0s 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...