/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=NARROWEST --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/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:01,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:01,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:01,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:01,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:01,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:01,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:01,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:01,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:01,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:01,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:01,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:01,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:01,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:01,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:01,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:01,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:01,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:01,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:01,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:01,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:01,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:01,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:01,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:01,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:01,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:01,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:01,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:01,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:01,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:01,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:01,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:01,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:01,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:01,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:01,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:01,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:01,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:01,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:01,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:01,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:01,844 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 [2020-10-13 10:19:01,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:01,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:01,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:01,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:01,888 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:01,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:01,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:01,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:01,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:01,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:01,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:01,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:01,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:01,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:01,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:01,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:01,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:01,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:01,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:01,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:01,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:01,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:01,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:01,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:01,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:01,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:01,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:01,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:01,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:01,897 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:19:02,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:02,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:02,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:02,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:02,242 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:02,243 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-10-13 10:19:02,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbaa8a0a9/a5c197382f97478c9aab2b1e37b334c5/FLAGfce2807c0 [2020-10-13 10:19:02,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:02,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-10-13 10:19:02,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbaa8a0a9/a5c197382f97478c9aab2b1e37b334c5/FLAGfce2807c0 [2020-10-13 10:19:03,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbaa8a0a9/a5c197382f97478c9aab2b1e37b334c5 [2020-10-13 10:19:03,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:03,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:03,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:03,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:03,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:03,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03, skipping insertion in model container [2020-10-13 10:19:03,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:03,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:03,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:03,508 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:03,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:03,644 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:03,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03 WrapperNode [2020-10-13 10:19:03,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:03,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:03,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:03,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:03,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (1/1) ... [2020-10-13 10:19:03,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:03,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:03,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:03,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:03,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (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 [2020-10-13 10:19:03,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-13 10:19:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-10-13 10:19:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-13 10:19:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-10-13 10:19:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:04,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:04,278 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-13 10:19:04,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:04 BoogieIcfgContainer [2020-10-13 10:19:04,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:04,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:04,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:04,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:04,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:03" (1/3) ... [2020-10-13 10:19:04,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f502ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:04, skipping insertion in model container [2020-10-13 10:19:04,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:03" (2/3) ... [2020-10-13 10:19:04,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f502ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:04, skipping insertion in model container [2020-10-13 10:19:04,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:04" (3/3) ... [2020-10-13 10:19:04,295 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-10-13 10:19:04,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:04,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:04,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:04,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:04,349 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:04,349 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:04,349 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:04,350 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:04,350 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:04,350 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:04,350 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-13 10:19:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:19:04,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:04,378 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] [2020-10-13 10:19:04,378 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-10-13 10:19:04,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:04,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302030977] [2020-10-13 10:19:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:04,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:04,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:19:04,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:19:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 10:19:04,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:04,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:19:04,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:04,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:19:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:04,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:04,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:04,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:19:04,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:04,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:04,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:19:04,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:19:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:19:04,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:04,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:19:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:04,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:04,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:19:04,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:04,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:19:04,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:04,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:04,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302030977] [2020-10-13 10:19:04,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:04,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:04,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968413698] [2020-10-13 10:19:04,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:04,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:04,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:04,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:04,939 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-13 10:19:05,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:05,276 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-10-13 10:19:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:19:05,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 10:19:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:05,291 INFO L225 Difference]: With dead ends: 108 [2020-10-13 10:19:05,292 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:19:05,297 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 [2020-10-13 10:19:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:19:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-13 10:19:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:19:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-13 10:19:05,381 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-10-13 10:19:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:05,381 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-13 10:19:05,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-13 10:19:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:19:05,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:05,384 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] [2020-10-13 10:19:05,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:05,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:05,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:05,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-10-13 10:19:05,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:05,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712403147] [2020-10-13 10:19:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:05,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:05,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:19:05,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 10:19:05,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:19:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 10:19:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:19:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:05,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:05,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:05,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:19:05,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:05,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:05,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:19:05,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:19:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:19:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:05,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:05,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:05,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:19:05,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:05,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712403147] [2020-10-13 10:19:05,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:05,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:19:05,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608519008] [2020-10-13 10:19:05,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:19:05,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:05,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:19:05,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:19:05,734 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-10-13 10:19:05,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:05,941 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 10:19:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:19:05,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-13 10:19:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:05,944 INFO L225 Difference]: With dead ends: 57 [2020-10-13 10:19:05,944 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:19:05,945 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 [2020-10-13 10:19:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:19:05,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-13 10:19:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:19:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-13 10:19:05,955 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-10-13 10:19:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:05,957 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-13 10:19:05,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:19:05,957 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-13 10:19:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:19:05,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:05,959 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:19:05,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:05,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:05,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-10-13 10:19:05,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:05,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955332842] [2020-10-13 10:19:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:05,982 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:05,982 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:05,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:19:06,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:06 BoogieIcfgContainer [2020-10-13 10:19:06,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:06,007 INFO L168 Benchmark]: Toolchain (without parser) took 2781.18 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 104.0 MB in the beginning and 127.4 MB in the end (delta: -23.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:06,008 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:19:06,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.69 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 180.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:06,010 INFO L168 Benchmark]: Boogie Preprocessor took 70.43 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 178.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:06,011 INFO L168 Benchmark]: RCFGBuilder took 567.27 ms. Allocated memory is still 203.4 MB. Free memory was 178.3 MB in the beginning and 146.6 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:06,012 INFO L168 Benchmark]: TraceAbstraction took 1719.60 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 145.9 MB in the beginning and 127.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:06,015 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 418.69 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 180.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.43 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 178.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 567.27 ms. Allocated memory is still 203.4 MB. Free memory was 178.3 MB in the beginning and 146.6 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1719.60 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 145.9 MB in the beginning and 127.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 50.0 MB. 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, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=58occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 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...