/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 00:33:11,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:33:11,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:33:11,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:33:11,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:33:11,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:33:11,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:33:11,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:33:11,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:33:11,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:33:11,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:33:11,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:33:11,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:33:11,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:33:11,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:33:11,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:33:11,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:33:11,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:33:11,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:33:11,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:33:11,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:33:11,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:33:11,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:33:11,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:33:11,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:33:11,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:33:11,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:33:11,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:33:11,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:33:11,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:33:11,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:33:11,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:33:11,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:33:11,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:33:11,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:33:11,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:33:11,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:33:11,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:33:11,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:33:11,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:33:11,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:33:11,627 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 00:33:11,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:33:11,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:33:11,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:33:11,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:33:11,669 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:33:11,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:33:11,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:33:11,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:33:11,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:33:11,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:33:11,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:33:11,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:33:11,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:33:11,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:33:11,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:33:11,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:33:11,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:33:11,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:33:11,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:33:11,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:33:11,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:33:11,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:33:11,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:33:11,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:33:11,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:33:11,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:33:11,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:33:11,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:33:11,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:33:11,677 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:33:12,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:33:12,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:33:12,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:33:12,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:33:12,031 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:33:12,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 00:33:12,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d052d627/0ed9a480c6274594820d1be94f1a17ff/FLAGffee97c06 [2020-08-22 00:33:12,652 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:33:12,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 00:33:12,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d052d627/0ed9a480c6274594820d1be94f1a17ff/FLAGffee97c06 [2020-08-22 00:33:12,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d052d627/0ed9a480c6274594820d1be94f1a17ff [2020-08-22 00:33:12,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:33:12,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:33:12,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:12,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:33:12,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:33:12,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:12" (1/1) ... [2020-08-22 00:33:12,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe831a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:12, skipping insertion in model container [2020-08-22 00:33:12,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:12" (1/1) ... [2020-08-22 00:33:13,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:33:13,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:33:13,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:13,402 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:33:13,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:13,481 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:33:13,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13 WrapperNode [2020-08-22 00:33:13,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:13,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:33:13,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:33:13,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:33:13,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (1/1) ... [2020-08-22 00:33:13,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:33:13,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:33:13,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:33:13,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:33:13,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (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 00:33:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:33:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:33:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 00:33:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 00:33:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:33:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:33:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 00:33:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 00:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 00:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 00:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:33:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 00:33:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:33:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:33:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 00:33:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:33:14,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:33:14,211 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 00:33:14,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:14 BoogieIcfgContainer [2020-08-22 00:33:14,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:33:14,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:33:14,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:33:14,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:33:14,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:33:12" (1/3) ... [2020-08-22 00:33:14,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eeb8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:14, skipping insertion in model container [2020-08-22 00:33:14,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:13" (2/3) ... [2020-08-22 00:33:14,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eeb8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:14, skipping insertion in model container [2020-08-22 00:33:14,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:14" (3/3) ... [2020-08-22 00:33:14,226 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-22 00:33:14,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:33:14,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:33:14,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:33:14,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:33:14,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:33:14,286 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:33:14,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:33:14,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:33:14,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:33:14,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:33:14,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:33:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 00:33:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 00:33:14,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:14,316 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 00:33:14,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-22 00:33:14,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:14,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660055086] [2020-08-22 00:33:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:33:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:14,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:33:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:33:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:14,559 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 00:33:14,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660055086] [2020-08-22 00:33:14,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:33:14,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:33:14,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603271300] [2020-08-22 00:33:14,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:33:14,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:33:14,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:33:14,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:33:14,590 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-22 00:33:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:33:14,902 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-22 00:33:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:33:14,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 00:33:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:33:14,916 INFO L225 Difference]: With dead ends: 138 [2020-08-22 00:33:14,916 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 00:33:14,921 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 00:33:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 00:33:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 00:33:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 00:33:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-22 00:33:14,988 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-22 00:33:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:33:14,988 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-22 00:33:14,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:33:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-22 00:33:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 00:33:14,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:14,990 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 00:33:14,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:33:14,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-22 00:33:14,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:14,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33468760] [2020-08-22 00:33:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:33:15,121 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:33:15,121 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:33:15,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:33:15,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:33:15 BoogieIcfgContainer [2020-08-22 00:33:15,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:33:15,174 INFO L168 Benchmark]: Toolchain (without parser) took 2190.35 ms. Allocated memory was 137.9 MB in the beginning and 230.2 MB in the end (delta: 92.3 MB). Free memory was 100.0 MB in the beginning and 188.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,177 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:33:15,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.86 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.8 MB in the beginning and 173.9 MB in the end (delta: -74.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,180 INFO L168 Benchmark]: Boogie Preprocessor took 65.36 ms. Allocated memory is still 199.8 MB. Free memory was 173.9 MB in the beginning and 171.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,181 INFO L168 Benchmark]: RCFGBuilder took 668.21 ms. Allocated memory is still 199.8 MB. Free memory was 171.1 MB in the beginning and 135.4 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:15,183 INFO L168 Benchmark]: TraceAbstraction took 952.33 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 135.4 MB in the beginning and 188.9 MB in the end (delta: -53.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:33:15,188 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 497.86 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 99.8 MB in the beginning and 173.9 MB in the end (delta: -74.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.36 ms. Allocated memory is still 199.8 MB. Free memory was 173.9 MB in the beginning and 171.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 668.21 ms. Allocated memory is still 199.8 MB. Free memory was 171.1 MB in the beginning and 135.4 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 952.33 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 135.4 MB in the beginning and 188.9 MB in the end (delta: -53.5 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: 0.8s, 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...