/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:49,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:49,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:49,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:49,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:49,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:49,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:49,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:49,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:49,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:49,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:50,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:50,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:50,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:50,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:50,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:50,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:50,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:50,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:50,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:50,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:50,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:50,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:50,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:50,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:50,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:50,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:50,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:50,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:50,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:50,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:50,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:50,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:50,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:50,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:50,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:50,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:50,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:50,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:50,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:50,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:50,061 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 [2020-10-14 04:47:50,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:50,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:50,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:50,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:50,101 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:50,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:50,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:50,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:50,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:50,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:50,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:50,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:50,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:50,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:50,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:50,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:50,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:50,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:50,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:50,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:50,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:50,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:50,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:50,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:50,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:50,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:50,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:50,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:50,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:50,107 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:47:50,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:50,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:50,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:50,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:50,430 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:50,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-14 04:47:50,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e3bc675/de8f65a3a933426cb6b525688c4a2d2d/FLAG41b7443c1 [2020-10-14 04:47:51,006 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:51,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-14 04:47:51,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e3bc675/de8f65a3a933426cb6b525688c4a2d2d/FLAG41b7443c1 [2020-10-14 04:47:51,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21e3bc675/de8f65a3a933426cb6b525688c4a2d2d [2020-10-14 04:47:51,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:51,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:51,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:51,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:51,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:51,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4122bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51, skipping insertion in model container [2020-10-14 04:47:51,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:51,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:51,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:51,633 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:51,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:51,805 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:51,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51 WrapperNode [2020-10-14 04:47:51,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:51,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:51,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:51,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:51,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... [2020-10-14 04:47:51,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:51,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:51,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:51,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:51,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-14 04:47:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-14 04:47:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-14 04:47:51,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:47:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-14 04:47:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-14 04:47:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-14 04:47:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:47:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:52,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:52,576 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 04:47:52,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:52 BoogieIcfgContainer [2020-10-14 04:47:52,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:52,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:52,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:52,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:52,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:51" (1/3) ... [2020-10-14 04:47:52,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7bafd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:52, skipping insertion in model container [2020-10-14 04:47:52,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51" (2/3) ... [2020-10-14 04:47:52,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7bafd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:52, skipping insertion in model container [2020-10-14 04:47:52,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:52" (3/3) ... [2020-10-14 04:47:52,590 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0660a.c [2020-10-14 04:47:52,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:52,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:52,619 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:52,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:52,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:52,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:52,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:52,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:52,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:52,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:52,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-14 04:47:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:47:52,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:52,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:47:52,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1526168591, now seen corresponding path program 1 times [2020-10-14 04:47:52,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:52,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045138862] [2020-10-14 04:47:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:53,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:53,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:47:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 04:47:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:53,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 04:47:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:53,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:47:53,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:53,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:53,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:53,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:53,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:47:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:53,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:53,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:47:53,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:47:53,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:53,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:47:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:47:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:47:53,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045138862] [2020-10-14 04:47:53,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:53,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:53,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116558327] [2020-10-14 04:47:53,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:53,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:53,384 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-14 04:47:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:53,895 INFO L93 Difference]: Finished difference Result 196 states and 309 transitions. [2020-10-14 04:47:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:47:53,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 04:47:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:53,912 INFO L225 Difference]: With dead ends: 196 [2020-10-14 04:47:53,913 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 04:47:53,918 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 [2020-10-14 04:47:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 04:47:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-14 04:47:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 04:47:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-14 04:47:53,978 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-14 04:47:53,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:53,978 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-14 04:47:53,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:47:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-14 04:47:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:47:53,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:53,980 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] [2020-10-14 04:47:53,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:47:53,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:53,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:53,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1732400538, now seen corresponding path program 1 times [2020-10-14 04:47:53,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:53,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304361597] [2020-10-14 04:47:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:47:54,035 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:47:54,036 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:47:54,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:47:54,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:47:54 BoogieIcfgContainer [2020-10-14 04:47:54,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:47:54,063 INFO L168 Benchmark]: Toolchain (without parser) took 2747.09 ms. Allocated memory was 138.4 MB in the beginning and 233.3 MB in the end (delta: 94.9 MB). Free memory was 101.4 MB in the beginning and 135.8 MB in the end (delta: -34.4 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:54,064 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-14 04:47:54,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.13 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.2 MB in the beginning and 176.1 MB in the end (delta: -74.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:54,069 INFO L168 Benchmark]: Boogie Preprocessor took 69.61 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 172.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:54,070 INFO L168 Benchmark]: RCFGBuilder took 704.52 ms. Allocated memory is still 201.3 MB. Free memory was 172.6 MB in the beginning and 132.9 MB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:54,071 INFO L168 Benchmark]: TraceAbstraction took 1478.09 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 132.2 MB in the beginning and 135.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:54,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 490.13 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.2 MB in the beginning and 176.1 MB in the end (delta: -74.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.61 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 172.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 704.52 ms. Allocated memory is still 201.3 MB. Free memory was 172.6 MB in the beginning and 132.9 MB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1478.09 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 132.2 MB in the beginning and 135.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 230]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 229, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 133, overapproximation of someUnaryFLOAToperation at line 217, overapproximation of someBinaryArithmeticFLOAToperation at line 135. Possible FailurePath: [L27-L32] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L34-L39] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L41-L45] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L47-L49] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L115-L116] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L216] float x = __VERIFIER_nondet_float(); [L217] float y = -0.0f; [L224] COND TRUE x < 0.0f && y == -0.0f [L226] CALL, EXPR __ieee754_atan2f(y, x) [L119] float z; [L120] __int32_t k, m, hx, hy, ix, iy; [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff [L129] ieee_float_shape_type gf_u; [L130] gf_u.value = (y) [L131] EXPR gf_u.word [L131] (hy) = gf_u.word [L133] iy = hy & 0x7fffffff [L134] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L135] return x + y; [L226] RET, EXPR __ieee754_atan2f(y, x) [L226] float res = __ieee754_atan2f(y, x); [L229] COND TRUE res != -pi [L230] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 16 SDslu, 124 SDs, 0 SdLazy, 136 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=101occurred 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, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 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...