/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:25:16,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:25:16,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:25:16,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:25:16,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:25:16,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:25:16,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:25:16,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:25:16,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:25:16,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:25:16,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:25:16,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:25:16,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:25:16,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:25:16,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:25:16,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:25:16,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:25:16,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:25:16,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:25:16,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:25:16,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:25:16,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:25:16,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:25:16,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:25:16,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:25:16,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:25:16,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:25:16,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:25:16,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:25:16,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:25:16,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:25:16,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:25:16,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:25:16,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:25:16,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:25:16,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:25:16,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:25:16,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:25:16,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:25:16,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:25:16,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:25:16,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:25:16,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:25:16,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:25:16,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:25:16,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:25:16,841 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:25:16,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:25:16,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:25:16,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:25:16,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:25:16,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:25:16,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:25:16,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:25:16,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:25:16,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:25:16,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:25:16,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:25:16,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:25:16,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:25:16,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:25:16,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:25:16,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:25:16,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:25:16,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:25:16,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:25:16,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:25:16,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:25:16,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:25:16,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:25:16,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:25:16,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:25:17,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:25:17,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:25:17,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:25:17,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:25:17,241 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:25:17,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 05:25:17,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b434b20a0/8c37b17bf24c47cb9024340d47be24f8/FLAG810894a72 [2020-08-22 05:25:17,719 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:25:17,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 05:25:17,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b434b20a0/8c37b17bf24c47cb9024340d47be24f8/FLAG810894a72 [2020-08-22 05:25:18,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b434b20a0/8c37b17bf24c47cb9024340d47be24f8 [2020-08-22 05:25:18,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:25:18,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:25:18,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:18,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:25:18,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:25:18,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18, skipping insertion in model container [2020-08-22 05:25:18,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:25:18,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:25:18,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:18,412 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:25:18,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:18,666 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:25:18,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18 WrapperNode [2020-08-22 05:25:18,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:18,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:25:18,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:25:18,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:25:18,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... [2020-08-22 05:25:18,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:25:18,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:25:18,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:25:18,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:25:18,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:25:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:25:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:25:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 05:25:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 05:25:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 05:25:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:25:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:25:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 05:25:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 05:25:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 05:25:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:25:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 05:25:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:25:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:25:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 05:25:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:25:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 05:25:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:25:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:25:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 05:25:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:25:19,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:25:19,451 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 05:25:19,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:19 BoogieIcfgContainer [2020-08-22 05:25:19,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:25:19,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:25:19,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:25:19,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:25:19,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:25:18" (1/3) ... [2020-08-22 05:25:19,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d248bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:19, skipping insertion in model container [2020-08-22 05:25:19,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:18" (2/3) ... [2020-08-22 05:25:19,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d248bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:19, skipping insertion in model container [2020-08-22 05:25:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:19" (3/3) ... [2020-08-22 05:25:19,470 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-22 05:25:19,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:25:19,491 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:25:19,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:25:19,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:25:19,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:25:19,539 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:25:19,539 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:25:19,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:25:19,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:25:19,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:25:19,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:25:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 05:25:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 05:25:19,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:19,571 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] [2020-08-22 05:25:19,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:19,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-22 05:25:19,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:19,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168812865] [2020-08-22 05:25:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:19,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:25:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:19,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:25:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:19,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:25:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:25:19,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168812865] [2020-08-22 05:25:19,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:25:19,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:25:19,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830560411] [2020-08-22 05:25:19,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:25:19,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:25:19,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:25:19,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:25:19,860 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-22 05:25:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:25:20,179 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-22 05:25:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:25:20,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 05:25:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:25:20,192 INFO L225 Difference]: With dead ends: 138 [2020-08-22 05:25:20,192 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 05:25:20,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:25:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 05:25:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 05:25:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 05:25:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-22 05:25:20,241 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-22 05:25:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:25:20,241 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-22 05:25:20,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:25:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-22 05:25:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 05:25:20,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:20,243 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] [2020-08-22 05:25:20,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:25:20,244 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:20,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:20,245 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-22 05:25:20,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:20,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890690216] [2020-08-22 05:25:20,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:25:20,360 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:25:20,361 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:25:20,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:25:20,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:25:20 BoogieIcfgContainer [2020-08-22 05:25:20,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:25:20,396 INFO L168 Benchmark]: Toolchain (without parser) took 2269.93 ms. Allocated memory was 142.6 MB in the beginning and 230.2 MB in the end (delta: 87.6 MB). Free memory was 103.9 MB in the beginning and 181.8 MB in the end (delta: -77.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:20,397 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:25:20,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.31 ms. Allocated memory was 142.6 MB in the beginning and 206.6 MB in the end (delta: 64.0 MB). Free memory was 103.7 MB in the beginning and 181.5 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:20,401 INFO L168 Benchmark]: Boogie Preprocessor took 83.01 ms. Allocated memory is still 206.6 MB. Free memory was 181.5 MB in the beginning and 178.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:20,402 INFO L168 Benchmark]: RCFGBuilder took 707.24 ms. Allocated memory is still 206.6 MB. Free memory was 178.7 MB in the beginning and 142.8 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:20,404 INFO L168 Benchmark]: TraceAbstraction took 929.30 ms. Allocated memory was 206.6 MB in the beginning and 230.2 MB in the end (delta: 23.6 MB). Free memory was 142.2 MB in the beginning and 181.8 MB in the end (delta: -39.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:25:20,411 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 541.31 ms. Allocated memory was 142.6 MB in the beginning and 206.6 MB in the end (delta: 64.0 MB). Free memory was 103.7 MB in the beginning and 181.5 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.01 ms. Allocated memory is still 206.6 MB. Free memory was 181.5 MB in the beginning and 178.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 707.24 ms. Allocated memory is still 206.6 MB. Free memory was 178.7 MB in the beginning and 142.8 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 929.30 ms. Allocated memory was 206.6 MB in the beginning and 230.2 MB in the end (delta: 23.6 MB). Free memory was 142.2 MB in the beginning and 181.8 MB in the end (delta: -39.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...