/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:24:52,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:24:52,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:24:52,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:24:52,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:24:52,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:24:52,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:24:52,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:24:52,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:24:52,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:24:52,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:24:52,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:24:52,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:24:52,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:24:52,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:24:52,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:24:52,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:24:52,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:24:52,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:24:52,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:24:52,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:24:52,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:24:52,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:24:52,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:24:52,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:24:52,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:24:52,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:24:52,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:24:52,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:24:52,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:24:52,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:24:52,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:24:52,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:24:52,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:24:52,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:24:52,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:24:52,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:24:52,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:24:52,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:24:52,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:24:52,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:24:52,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:24:52,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:24:52,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:24:52,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:24:52,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:24:52,962 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:24:52,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:24:52,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:24:52,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:24:52,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:24:52,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:24:52,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:24:52,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:24:52,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:24:52,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:24:52,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:24:52,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:24:52,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:24:52,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:24:52,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:24:52,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:24:52,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:24:52,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:24:52,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:24:52,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:24:52,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:24:52,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:24:52,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:24:52,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:24:52,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:24:52,972 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 05:24:53,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:24:53,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:24:53,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:24:53,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:24:53,542 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:24:53,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-25 05:24:53,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94de17c3f/ea9bbfded31249e29edf14a375cf1c2c/FLAG51ff31831 [2020-09-25 05:24:54,238 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:24:54,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-25 05:24:54,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94de17c3f/ea9bbfded31249e29edf14a375cf1c2c/FLAG51ff31831 [2020-09-25 05:24:54,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94de17c3f/ea9bbfded31249e29edf14a375cf1c2c [2020-09-25 05:24:54,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:24:54,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:24:54,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:54,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:24:54,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:24:54,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:54" (1/1) ... [2020-09-25 05:24:54,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c09893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:54, skipping insertion in model container [2020-09-25 05:24:54,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:54" (1/1) ... [2020-09-25 05:24:54,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:24:54,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:24:54,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:54,891 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:24:55,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:55,047 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:24:55,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55 WrapperNode [2020-09-25 05:24:55,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:55,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:24:55,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:24:55,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:24:55,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... [2020-09-25 05:24:55,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... [2020-09-25 05:24:55,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... [2020-09-25 05:24:55,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... [2020-09-25 05:24:55,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... [2020-09-25 05:24:55,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... [2020-09-25 05:24:55,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... [2020-09-25 05:24:55,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:24:55,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:24:55,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:24:55,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:24:55,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:24:55,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:24:55,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:24:55,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 05:24:55,198 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-09-25 05:24:55,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:24:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:24:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 05:24:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-09-25 05:24:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:24:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 05:24:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:24:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:24:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:24:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 05:24:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:24:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:24:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:24:55,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:24:55,806 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-09-25 05:24:55,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:55 BoogieIcfgContainer [2020-09-25 05:24:55,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:24:55,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:24:55,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:24:55,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:24:55,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:24:54" (1/3) ... [2020-09-25 05:24:55,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b75f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:55, skipping insertion in model container [2020-09-25 05:24:55,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:55" (2/3) ... [2020-09-25 05:24:55,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b75f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:55, skipping insertion in model container [2020-09-25 05:24:55,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:55" (3/3) ... [2020-09-25 05:24:55,823 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-09-25 05:24:55,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:24:55,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:24:55,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:24:55,893 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:24:55,893 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:24:55,893 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:24:55,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:24:55,893 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:24:55,893 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:24:55,894 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:24:55,894 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:24:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-09-25 05:24:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 05:24:55,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:55,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:24:55,933 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:55,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1596885088, now seen corresponding path program 1 times [2020-09-25 05:24:55,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:55,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107945439] [2020-09-25 05:24:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:56,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 05:24:56,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:24:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-25 05:24:56,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:56,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 05:24:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:24:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:24:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:56,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:56,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:24:56,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:24:56,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:56,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:24:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:56,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:24:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:24:56,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:24:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:24:56,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:56,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:24:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:56,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:24:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:56,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:56,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:24:56,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:24:56,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:56,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:24:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:56,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:24:56,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107945439] [2020-09-25 05:24:56,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:24:56,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:24:56,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667016942] [2020-09-25 05:24:56,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:24:56,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:24:56,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:24:56,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:24:56,669 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-09-25 05:24:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:24:57,279 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2020-09-25 05:24:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:24:57,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-25 05:24:57,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:24:57,305 INFO L225 Difference]: With dead ends: 352 [2020-09-25 05:24:57,305 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 05:24:57,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:24:57,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 05:24:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-25 05:24:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 05:24:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 178 transitions. [2020-09-25 05:24:57,420 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 178 transitions. Word has length 42 [2020-09-25 05:24:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:24:57,421 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 178 transitions. [2020-09-25 05:24:57,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:24:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 178 transitions. [2020-09-25 05:24:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 05:24:57,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:57,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:24:57,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:24:57,435 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:57,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1781987569, now seen corresponding path program 1 times [2020-09-25 05:24:57,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:57,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326054313] [2020-09-25 05:24:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:57,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:57,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:24:57,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:57,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 05:24:57,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:57,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:57,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:24:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 05:24:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:24:57,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:24:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:57,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:57,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:24:57,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:24:57,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:57,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:24:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:24:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:57,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:57,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 05:24:57,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 05:24:57,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:57,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:24:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:57,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:24:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:57,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:57,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:24:57,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:57,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:24:57,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:57,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:57,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:57,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:24:57,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:24:57,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326054313] [2020-09-25 05:24:57,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:24:57,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:24:57,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141903236] [2020-09-25 05:24:57,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:24:57,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:24:57,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:24:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:24:57,940 INFO L87 Difference]: Start difference. First operand 172 states and 178 transitions. Second operand 5 states. [2020-09-25 05:24:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:24:58,389 INFO L93 Difference]: Finished difference Result 179 states and 184 transitions. [2020-09-25 05:24:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:24:58,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-25 05:24:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:24:58,393 INFO L225 Difference]: With dead ends: 179 [2020-09-25 05:24:58,394 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 05:24:58,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:24:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 05:24:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-25 05:24:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 05:24:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 177 transitions. [2020-09-25 05:24:58,420 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 177 transitions. Word has length 64 [2020-09-25 05:24:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:24:58,423 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 177 transitions. [2020-09-25 05:24:58,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:24:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 177 transitions. [2020-09-25 05:24:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 05:24:58,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:58,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:24:58,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:24:58,432 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:58,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:58,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1985524025, now seen corresponding path program 1 times [2020-09-25 05:24:58,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:58,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040141194] [2020-09-25 05:24:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:24:58,497 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:24:58,497 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:24:58,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:24:58,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:24:58 BoogieIcfgContainer [2020-09-25 05:24:58,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:24:58,539 INFO L168 Benchmark]: Toolchain (without parser) took 4006.19 ms. Allocated memory was 141.0 MB in the beginning and 248.0 MB in the end (delta: 107.0 MB). Free memory was 102.3 MB in the beginning and 190.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:58,541 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 05:24:58,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.94 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 101.7 MB in the beginning and 179.0 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:58,544 INFO L168 Benchmark]: Boogie Preprocessor took 72.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 176.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:58,545 INFO L168 Benchmark]: RCFGBuilder took 692.29 ms. Allocated memory is still 201.3 MB. Free memory was 176.3 MB in the beginning and 133.4 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:58,547 INFO L168 Benchmark]: TraceAbstraction took 2719.58 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 132.8 MB in the beginning and 190.4 MB in the end (delta: -57.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:24:58,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 511.94 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 101.7 MB in the beginning and 179.0 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 176.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 692.29 ms. Allocated memory is still 201.3 MB. Free memory was 176.3 MB in the beginning and 133.4 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2719.58 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 132.8 MB in the beginning and 190.4 MB in the end (delta: -57.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 186 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 361 SDtfs, 42 SDslu, 354 SDs, 0 SdLazy, 501 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 8209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...