/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:04,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:04,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:04,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:04,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:04,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:04,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:04,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:04,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:04,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:04,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:04,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:04,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:04,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:04,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:04,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:04,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:04,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:04,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:04,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:04,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:04,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:04,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:04,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:04,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:04,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:04,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:04,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:04,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:04,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:04,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:04,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:04,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:04,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:04,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:04,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:04,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:04,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:04,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:04,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:04,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:04,951 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 [2020-09-21 11:19:05,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:05,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:05,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:05,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:05,022 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:05,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:05,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:05,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:05,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:05,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:05,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:05,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:05,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:05,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:05,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:05,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:05,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:05,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:05,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:05,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:05,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:05,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:05,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:05,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:05,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:05,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:05,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:05,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:05,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:05,027 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:05,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:05,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:05,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:05,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:05,599 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:05,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-21 11:19:05,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82958e97f/a8863adf11de43549605780e82492eda/FLAG0163ee902 [2020-09-21 11:19:06,271 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:06,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-21 11:19:06,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82958e97f/a8863adf11de43549605780e82492eda/FLAG0163ee902 [2020-09-21 11:19:06,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82958e97f/a8863adf11de43549605780e82492eda [2020-09-21 11:19:06,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:06,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:06,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:06,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:06,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:06,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:06" (1/1) ... [2020-09-21 11:19:06,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:06, skipping insertion in model container [2020-09-21 11:19:06,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:06" (1/1) ... [2020-09-21 11:19:06,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:06,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:06,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:06,980 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:07,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:07,160 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:07,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07 WrapperNode [2020-09-21 11:19:07,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:07,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:07,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:07,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:07,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:07,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:07,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:07,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:07,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (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 [2020-09-21 11:19:07,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-21 11:19:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-21 11:19:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-21 11:19:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-21 11:19:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:19:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:19:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:19:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:19:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:19:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:19:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-21 11:19:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 11:19:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:07,841 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:07,841 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-21 11:19:07,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:07 BoogieIcfgContainer [2020-09-21 11:19:07,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:07,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:07,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:07,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:07,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:06" (1/3) ... [2020-09-21 11:19:07,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6222eb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:07, skipping insertion in model container [2020-09-21 11:19:07,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (2/3) ... [2020-09-21 11:19:07,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6222eb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:07, skipping insertion in model container [2020-09-21 11:19:07,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:07" (3/3) ... [2020-09-21 11:19:07,856 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-21 11:19:07,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:07,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:07,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:07,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:07,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:07,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:07,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:07,933 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:07,933 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:07,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:07,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-21 11:19:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:19:07,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:07,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:07,970 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-09-21 11:19:07,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:07,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478109105] [2020-09-21 11:19:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:08,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:08,143 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:08,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:08,144 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:08,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:19:08,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:08,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:19:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:08,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:08,303 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:08,303 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:08,304 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:19:08,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:08,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:08,347 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:08,348 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:08,348 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:08,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:08,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:19:08,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:08,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:08,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:19:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:08,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478109105] [2020-09-21 11:19:08,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:08,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:19:08,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893985535] [2020-09-21 11:19:08,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:19:08,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:08,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:19:08,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:19:08,391 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-09-21 11:19:08,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:08,668 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-09-21 11:19:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:19:08,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 11:19:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:08,685 INFO L225 Difference]: With dead ends: 116 [2020-09-21 11:19:08,685 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 11:19:08,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 11:19:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-21 11:19:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:19:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-09-21 11:19:08,751 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-09-21 11:19:08,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:08,751 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-09-21 11:19:08,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:19:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-09-21 11:19:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:19:08,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:08,754 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] [2020-09-21 11:19:08,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:08,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-09-21 11:19:08,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:08,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065111763] [2020-09-21 11:19:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:19:08,870 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:19:08,872 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:19:08,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:08,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:19:08 BoogieIcfgContainer [2020-09-21 11:19:08,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:19:08,931 INFO L168 Benchmark]: Toolchain (without parser) took 2299.86 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.7 MB in the beginning and 86.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:08,932 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 137.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:19:08,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.89 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.0 MB in the beginning and 176.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:08,936 INFO L168 Benchmark]: Boogie Preprocessor took 64.40 ms. Allocated memory is still 199.8 MB. Free memory was 176.0 MB in the beginning and 173.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:08,937 INFO L168 Benchmark]: RCFGBuilder took 619.58 ms. Allocated memory is still 199.8 MB. Free memory was 173.9 MB in the beginning and 145.3 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:08,938 INFO L168 Benchmark]: TraceAbstraction took 1076.63 ms. Allocated memory is still 199.8 MB. Free memory was 144.6 MB in the beginning and 86.0 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:08,949 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 137.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 524.89 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.0 MB in the beginning and 176.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.40 ms. Allocated memory is still 199.8 MB. Free memory was 176.0 MB in the beginning and 173.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 619.58 ms. Allocated memory is still 199.8 MB. Free memory was 173.9 MB in the beginning and 145.3 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1076.63 ms. Allocated memory is still 199.8 MB. Free memory was 144.6 MB in the beginning and 86.0 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 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 bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [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] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.2s 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...