/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_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:48:36,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:48:36,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:48:36,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:48:36,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:48:36,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:48:36,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:48:36,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:48:36,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:48:36,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:48:36,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:48:36,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:48:36,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:48:36,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:48:36,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:48:36,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:48:36,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:48:36,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:48:36,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:48:36,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:48:36,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:48:36,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:48:36,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:48:36,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:48:36,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:48:36,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:48:36,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:48:36,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:48:36,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:48:36,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:48:36,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:48:36,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:48:36,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:48:36,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:48:36,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:48:36,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:48:36,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:48:36,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:48:36,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:48:36,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:48:36,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:48:36,770 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 04:48:36,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:48:36,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:48:36,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:48:36,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:48:36,795 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:48:36,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:48:36,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:48:36,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:48:36,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:48:36,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:48:36,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:48:36,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:48:36,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:48:36,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:48:36,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:48:36,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:48:36,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:48:36,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:48:36,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:48:36,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:48:36,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:48:36,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:48:36,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:48:36,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:48:36,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:48:36,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:48:36,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:48:36,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:48:36,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:48:36,800 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 04:48:37,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:48:37,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:48:37,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:48:37,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:48:37,147 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:48:37,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-14 04:48:37,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9e9f4405/9d269eda32554109aed21ced6e7a153a/FLAGda771e8f7 [2020-10-14 04:48:37,657 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:48:37,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-14 04:48:37,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9e9f4405/9d269eda32554109aed21ced6e7a153a/FLAGda771e8f7 [2020-10-14 04:48:38,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9e9f4405/9d269eda32554109aed21ced6e7a153a [2020-10-14 04:48:38,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:48:38,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:48:38,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:38,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:48:38,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:48:38,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9763dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38, skipping insertion in model container [2020-10-14 04:48:38,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:48:38,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:48:38,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:38,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:48:38,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:38,467 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:48:38,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38 WrapperNode [2020-10-14 04:48:38,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:38,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:48:38,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:48:38,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:48:38,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:48:38,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:48:38,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:48:38,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:48:38,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (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 04:48:38,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:48:38,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:48:38,581 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-14 04:48:38,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-14 04:48:38,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:48:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:48:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:48:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-14 04:48:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:48:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:48:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:48:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:48:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:48:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:48:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-14 04:48:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:48:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:48:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:48:38,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:48:39,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:48:39,086 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-14 04:48:39,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:39 BoogieIcfgContainer [2020-10-14 04:48:39,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:48:39,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:48:39,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:48:39,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:48:39,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:48:38" (1/3) ... [2020-10-14 04:48:39,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174c2e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:39, skipping insertion in model container [2020-10-14 04:48:39,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (2/3) ... [2020-10-14 04:48:39,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174c2e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:39, skipping insertion in model container [2020-10-14 04:48:39,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:39" (3/3) ... [2020-10-14 04:48:39,099 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2020-10-14 04:48:39,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:48:39,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:48:39,132 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:48:39,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:48:39,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:48:39,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:48:39,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:48:39,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:48:39,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:48:39,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:48:39,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:48:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-14 04:48:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:48:39,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:39,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:39,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:39,198 INFO L82 PathProgramCache]: Analyzing trace with hash 527256461, now seen corresponding path program 1 times [2020-10-14 04:48:39,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:39,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402964053] [2020-10-14 04:48:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:48:39,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 04:48:39,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:48:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:48:39,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:39,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:48:39,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:48:39,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:48:39,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 04:48:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:48:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:39,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:48:39,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,877 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 04:48:39,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402964053] [2020-10-14 04:48:39,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:39,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:48:39,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328628170] [2020-10-14 04:48:39,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:48:39,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:48:39,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:48:39,904 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-14 04:48:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:40,190 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2020-10-14 04:48:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:48:40,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 04:48:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:40,222 INFO L225 Difference]: With dead ends: 102 [2020-10-14 04:48:40,222 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 04:48:40,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:48:40,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 04:48:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-14 04:48:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 04:48:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-14 04:48:40,275 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2020-10-14 04:48:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:40,276 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-14 04:48:40,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-14 04:48:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:48:40,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:40,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:40,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:40,278 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash 847326186, now seen corresponding path program 1 times [2020-10-14 04:48:40,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:40,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505100623] [2020-10-14 04:48:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:40,362 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:40,363 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:40,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:40,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:40 BoogieIcfgContainer [2020-10-14 04:48:40,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:40,403 INFO L168 Benchmark]: Toolchain (without parser) took 2385.68 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 101.5 MB in the beginning and 195.9 MB in the end (delta: -94.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:48:40,405 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:40,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.58 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 101.1 MB in the beginning and 178.2 MB in the end (delta: -77.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:40,408 INFO L168 Benchmark]: Boogie Preprocessor took 52.49 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 176.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:40,408 INFO L168 Benchmark]: RCFGBuilder took 570.07 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 149.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:40,410 INFO L168 Benchmark]: TraceAbstraction took 1306.29 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 149.5 MB in the beginning and 195.9 MB in the end (delta: -46.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:48:40,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.58 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 101.1 MB in the beginning and 178.2 MB in the end (delta: -77.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.49 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 176.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 570.07 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 149.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1306.29 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 149.5 MB in the beginning and 195.9 MB in the end (delta: -46.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 123]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L117] float x = -1.0f / 0.0f; [L118] float y = __VERIFIER_nondet_float(); [L119] 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); [L119] RET, EXPR fmod_float(x, y) [L119] float res = fmod_float(x, y); [L122] CALL, EXPR isnan_float(res) [L108] return x != x; [L122] RET, EXPR isnan_float(res) [L122] COND TRUE !isnan_float(res) [L123] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 71 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...