/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 0.1.25-5644d1e-m [2020-08-19 01:06:16,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:06:16,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:06:16,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:06:16,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:06:16,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:06:16,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:06:16,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:06:16,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:06:16,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:06:16,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:06:16,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:06:16,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:06:16,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:06:16,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:06:16,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:06:16,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:06:16,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:06:16,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:06:16,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:06:16,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:06:16,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:06:16,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:06:16,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:06:16,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:06:16,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:06:16,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:06:16,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:06:16,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:06:16,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:06:16,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:06:16,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:06:16,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:06:16,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:06:16,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:06:16,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:06:16,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:06:16,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:06:16,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:06:16,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:06:16,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:06:16,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:06:16,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:06:16,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:06:16,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:06:16,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:06:16,249 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:06:16,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:06:16,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:06:16,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:06:16,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:06:16,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:06:16,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:06:16,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:06:16,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:06:16,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:06:16,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:06:16,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:06:16,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:06:16,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:06:16,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:06:16,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:06:16,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:06:16,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:06:16,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:06:16,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:06:16,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:06:16,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:06:16,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:06:16,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:06:16,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:06:16,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:06:16,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:06:16,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:06:16,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:06:16,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:06:16,563 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:06:16,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-19 01:06:16,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb0658c7c/9e25799001cc4b9fa62ec07a34c49e80/FLAG6c41707a2 [2020-08-19 01:06:17,122 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:06:17,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-19 01:06:17,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb0658c7c/9e25799001cc4b9fa62ec07a34c49e80/FLAG6c41707a2 [2020-08-19 01:06:17,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb0658c7c/9e25799001cc4b9fa62ec07a34c49e80 [2020-08-19 01:06:17,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:06:17,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:06:17,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:06:17,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:06:17,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:06:17,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:17,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392a9196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17, skipping insertion in model container [2020-08-19 01:06:17,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:17,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:06:17,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:06:17,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:06:17,837 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:06:17,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:06:17,981 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:06:17,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17 WrapperNode [2020-08-19 01:06:17,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:06:17,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:06:17,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:06:17,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:06:17,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:17,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:18,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:18,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:18,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:18,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:18,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:18,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:06:18,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:06:18,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:06:18,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:06:18,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:06:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:06:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:06:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 01:06:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-19 01:06:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:06:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:06:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 01:06:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 01:06:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:06:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:06:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:06:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:06:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:06:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:06:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-19 01:06:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:06:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:06:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 01:06:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:06:18,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:06:18,628 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 01:06:18,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:06:18 BoogieIcfgContainer [2020-08-19 01:06:18,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:06:18,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:06:18,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:06:18,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:06:18,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:06:17" (1/3) ... [2020-08-19 01:06:18,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9df7f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:06:18, skipping insertion in model container [2020-08-19 01:06:18,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17" (2/3) ... [2020-08-19 01:06:18,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9df7f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:06:18, skipping insertion in model container [2020-08-19 01:06:18,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:06:18" (3/3) ... [2020-08-19 01:06:18,641 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-19 01:06:18,651 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:06:18,660 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:06:18,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:06:18,700 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:06:18,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:06:18,700 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:06:18,701 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:06:18,701 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:06:18,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:06:18,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:06:18,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:06:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-19 01:06:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:06:18,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:18,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:18,728 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:18,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:18,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-19 01:06:18,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:18,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237498117] [2020-08-19 01:06:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:18,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:06:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:06:19,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237498117] [2020-08-19 01:06:19,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:06:19,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:06:19,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881312474] [2020-08-19 01:06:19,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:06:19,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:19,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:06:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:06:19,028 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-19 01:06:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:19,327 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-19 01:06:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:06:19,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 01:06:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:19,341 INFO L225 Difference]: With dead ends: 116 [2020-08-19 01:06:19,342 INFO L226 Difference]: Without dead ends: 56 [2020-08-19 01:06:19,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:06:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-19 01:06:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-19 01:06:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 01:06:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-19 01:06:19,401 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-19 01:06:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:19,401 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-19 01:06:19,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:06:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-19 01:06:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:06:19,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:19,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:06:19,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:06:19,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:19,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-19 01:06:19,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:19,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944694120] [2020-08-19 01:06:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:06:19,517 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:06:19,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:06:19,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:06:19,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:06:19 BoogieIcfgContainer [2020-08-19 01:06:19,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:06:19,545 INFO L168 Benchmark]: Toolchain (without parser) took 2120.23 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 93.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,546 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.15 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 177.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,548 INFO L168 Benchmark]: Boogie Preprocessor took 61.88 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 174.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,549 INFO L168 Benchmark]: RCFGBuilder took 587.81 ms. Allocated memory is still 201.3 MB. Free memory was 174.7 MB in the beginning and 146.6 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,549 INFO L168 Benchmark]: TraceAbstraction took 908.68 ms. Allocated memory is still 201.3 MB. Free memory was 146.6 MB in the beginning and 93.5 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,555 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 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 554.15 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 177.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.88 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 174.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 587.81 ms. Allocated memory is still 201.3 MB. Free memory was 174.7 MB in the beginning and 146.6 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 908.68 ms. Allocated memory is still 201.3 MB. Free memory was 146.6 MB in the beginning and 93.5 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of 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: 0.8s, 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, 0.0s 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, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...