/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:59,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:59,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:59,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:59,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:59,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:59,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:59,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:59,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:59,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:59,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:59,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:59,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:59,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:59,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:59,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:59,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:59,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:59,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:59,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:59,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:59,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:59,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:59,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:59,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:59,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:59,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:59,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:59,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:59,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:59,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:59,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:59,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:59,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:59,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:59,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:59,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:59,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:59,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:59,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:59,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:59,112 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 11:18:59,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:59,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:59,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:59,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:59,147 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:59,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:59,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:59,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:59,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:59,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:59,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:59,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:59,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:59,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:59,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:59,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:59,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:59,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:59,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:59,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:59,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:59,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:59,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:59,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:59,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:59,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:59,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:59,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:59,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:59,153 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 11:18:59,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:59,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:59,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:59,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:59,648 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:59,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c [2020-09-21 11:18:59,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bcfee454/a8762aa235c74a93afe005d5e0426695/FLAG1ae9d00be [2020-09-21 11:19:00,310 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:00,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c [2020-09-21 11:19:00,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bcfee454/a8762aa235c74a93afe005d5e0426695/FLAG1ae9d00be [2020-09-21 11:19:00,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bcfee454/a8762aa235c74a93afe005d5e0426695 [2020-09-21 11:19:00,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:00,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:00,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:00,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:00,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:00,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:00" (1/1) ... [2020-09-21 11:19:00,666 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 11:19:00, skipping insertion in model container [2020-09-21 11:19:00,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:00" (1/1) ... [2020-09-21 11:19:00,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:00,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:00,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:00,960 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:00,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:01,019 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:01,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01 WrapperNode [2020-09-21 11:19:01,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:01,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:01,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:01,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:01,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (1/1) ... [2020-09-21 11:19:01,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (1/1) ... [2020-09-21 11:19:01,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (1/1) ... [2020-09-21 11:19:01,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (1/1) ... [2020-09-21 11:19:01,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (1/1) ... [2020-09-21 11:19:01,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (1/1) ... [2020-09-21 11:19:01,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (1/1) ... [2020-09-21 11:19:01,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:01,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:01,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:01,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:01,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (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 11:19:01,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-09-21 11:19:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-21 11:19:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-09-21 11:19:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:19:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:19:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:19:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:19:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:19:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:19:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-21 11:19:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:01,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:01,645 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 11:19:01,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:01 BoogieIcfgContainer [2020-09-21 11:19:01,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:01,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:01,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:01,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:01,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:00" (1/3) ... [2020-09-21 11:19:01,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68809de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:01, skipping insertion in model container [2020-09-21 11:19:01,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:01" (2/3) ... [2020-09-21 11:19:01,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68809de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:01, skipping insertion in model container [2020-09-21 11:19:01,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:01" (3/3) ... [2020-09-21 11:19:01,674 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c.c [2020-09-21 11:19:01,684 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:01,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:01,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:01,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:01,742 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:01,742 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:01,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:01,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:01,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:01,742 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:01,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:01,763 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-21 11:19:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:19:01,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:01,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:01,772 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:01,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2020-09-21 11:19:01,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:01,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660679255] [2020-09-21 11:19:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:01,926 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:01,927 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:01,927 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:01,927 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:01,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:19:01,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:01,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:19:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:02,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:02,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:02,021 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:02,021 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:02,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:02,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:19:02,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:02,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:02,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:02,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:02,060 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:02,060 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:02,060 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:02,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:19:02,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:02,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:19:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:02,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:02,074 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 11:19:02,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660679255] [2020-09-21 11:19:02,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:02,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:19:02,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145424982] [2020-09-21 11:19:02,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:19:02,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:02,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:19:02,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:19:02,109 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-09-21 11:19:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:02,400 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2020-09-21 11:19:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:19:02,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-21 11:19:02,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:02,416 INFO L225 Difference]: With dead ends: 78 [2020-09-21 11:19:02,416 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 11:19:02,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 11:19:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 11:19:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 11:19:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2020-09-21 11:19:02,476 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2020-09-21 11:19:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:02,477 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2020-09-21 11:19:02,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:19:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2020-09-21 11:19:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:19:02,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:02,479 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 11:19:02,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:02,480 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:02,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2020-09-21 11:19:02,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:02,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774936459] [2020-09-21 11:19:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:19:02,560 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:19:02,561 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:19:02,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:02,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:19:02 BoogieIcfgContainer [2020-09-21 11:19:02,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:19:02,597 INFO L168 Benchmark]: Toolchain (without parser) took 1946.68 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.1 MB in the beginning and 106.9 MB in the end (delta: -3.8 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:02,599 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:19:02,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.68 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:02,601 INFO L168 Benchmark]: Boogie Preprocessor took 143.90 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:02,602 INFO L168 Benchmark]: RCFGBuilder took 482.34 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 158.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:02,602 INFO L168 Benchmark]: TraceAbstraction took 932.69 ms. Allocated memory is still 202.4 MB. Free memory was 158.4 MB in the beginning and 106.9 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:02,607 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.68 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.90 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.34 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 158.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 932.69 ms. Allocated memory is still 202.4 MB. Free memory was 158.4 MB in the beginning and 106.9 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; [L75] float x = -0.0f; [L76] CALL, EXPR floor_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L76] RET, EXPR floor_float(x) [L76] float res = floor_float(x); [L79] EXPR res == -0.0f && __signbit_float(res) == 1 [L79] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 41 SDslu, 5 SDs, 0 SdLazy, 51 SolverSat, 11 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...