/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=0.3 --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:36:40,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:36:40,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:36:40,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:36:40,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:36:40,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:36:40,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:36:40,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:36:40,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:36:40,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:36:40,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:36:40,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:36:40,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:36:40,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:36:40,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:36:40,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:36:40,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:36:40,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:36:40,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:36:40,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:36:40,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:36:40,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:36:40,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:36:40,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:36:40,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:36:40,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:36:40,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:36:40,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:36:40,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:36:40,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:36:40,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:36:40,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:36:40,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:36:40,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:36:40,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:36:40,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:36:40,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:36:40,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:36:40,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:36:40,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:36:40,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:36:40,813 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 04:36:40,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:36:40,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:36:40,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:36:40,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:36:40,837 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:36:40,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:36:40,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:36:40,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:36:40,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:36:40,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:36:40,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:36:40,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:36:40,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:36:40,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:36:40,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:36:40,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:36:40,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:36:40,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:36:40,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:36:40,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:36:40,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:36:40,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:36:40,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:36:40,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:36:40,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:36:40,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:36:40,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:36:40,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:36:40,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:36:40,843 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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-08-22 04:36:41,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:36:41,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:36:41,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:36:41,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:36:41,175 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:36:41,176 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 04:36:41,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93dd58a65/bf8b80ee88ea41a5ac595a15796d0d18/FLAG5e66f5c79 [2020-08-22 04:36:41,732 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:36:41,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 04:36:41,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93dd58a65/bf8b80ee88ea41a5ac595a15796d0d18/FLAG5e66f5c79 [2020-08-22 04:36:42,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93dd58a65/bf8b80ee88ea41a5ac595a15796d0d18 [2020-08-22 04:36:42,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:36:42,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:36:42,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:42,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:36:42,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:36:42,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42, skipping insertion in model container [2020-08-22 04:36:42,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:36:42,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:36:42,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:42,298 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:36:42,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:42,485 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:36:42,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42 WrapperNode [2020-08-22 04:36:42,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:42,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:36:42,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:36:42,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:36:42,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (1/1) ... [2020-08-22 04:36:42,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:36:42,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:36:42,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:36:42,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:36:42,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (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 04:36:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:36:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:36:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 04:36:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 04:36:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:36:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:36:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 04:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 04:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 04:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 04:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 04:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 04:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:36:43,190 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:36:43,190 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 04:36:43,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:43 BoogieIcfgContainer [2020-08-22 04:36:43,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:36:43,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:36:43,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:36:43,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:36:43,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:36:42" (1/3) ... [2020-08-22 04:36:43,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1c75c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:43, skipping insertion in model container [2020-08-22 04:36:43,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:42" (2/3) ... [2020-08-22 04:36:43,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1c75c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:43, skipping insertion in model container [2020-08-22 04:36:43,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:43" (3/3) ... [2020-08-22 04:36:43,204 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-22 04:36:43,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:36:43,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:36:43,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:36:43,251 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:36:43,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:36:43,252 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:36:43,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:36:43,252 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:36:43,252 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:36:43,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:36:43,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:36:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 04:36:43,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 04:36:43,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:36:43,280 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 04:36:43,280 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:36:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:36:43,285 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-22 04:36:43,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:36:43,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949458976] [2020-08-22 04:36:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:36:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:36:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:36:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:36:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:43,548 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 04:36:43,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949458976] [2020-08-22 04:36:43,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:36:43,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:36:43,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975432084] [2020-08-22 04:36:43,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:36:43,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:36:43,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:36:43,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:36:43,574 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-22 04:36:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:36:43,887 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-22 04:36:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:36:43,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 04:36:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:36:43,898 INFO L225 Difference]: With dead ends: 138 [2020-08-22 04:36:43,898 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 04:36:43,902 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 04:36:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 04:36:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 04:36:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 04:36:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-22 04:36:43,943 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-22 04:36:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:36:43,943 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-22 04:36:43,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:36:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-22 04:36:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 04:36:43,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:36:43,945 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 04:36:43,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:36:43,946 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:36:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:36:43,946 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-22 04:36:43,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:36:43,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298810824] [2020-08-22 04:36:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:36:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:36:44,040 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:36:44,041 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:36:44,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:36:44,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:36:44 BoogieIcfgContainer [2020-08-22 04:36:44,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:36:44,067 INFO L168 Benchmark]: Toolchain (without parser) took 2021.30 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.6 MB in the beginning and 191.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:44,068 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:36:44,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.10 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 178.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:44,070 INFO L168 Benchmark]: Boogie Preprocessor took 71.52 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 176.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:44,071 INFO L168 Benchmark]: RCFGBuilder took 637.50 ms. Allocated memory is still 203.4 MB. Free memory was 176.0 MB in the beginning and 140.3 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:44,072 INFO L168 Benchmark]: TraceAbstraction took 867.40 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 139.6 MB in the beginning and 191.4 MB in the end (delta: -51.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:36:44,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 440.10 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 178.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.52 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 176.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 637.50 ms. Allocated memory is still 203.4 MB. Free memory was 176.0 MB in the beginning and 140.3 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 867.40 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 139.6 MB in the beginning and 191.4 MB in the end (delta: -51.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, 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...