/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:44:15,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:15,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:15,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:15,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:15,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:15,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:15,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:15,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:15,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:15,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:15,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:15,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:15,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:15,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:15,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:15,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:15,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:15,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:15,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:15,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:15,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:15,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:15,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:15,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:15,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:15,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:15,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:15,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:15,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:15,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:15,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:15,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:15,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:15,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:15,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:15,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:15,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:15,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:15,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:15,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:15,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:44:15,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:15,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:15,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:15,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:15,539 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:15,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:15,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:15,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:15,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:15,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:15,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:15,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:15,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:15,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:15,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:15,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:15,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:15,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:15,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:15,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:15,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:15,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:15,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:15,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:15,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:15,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:15,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:15,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:15,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:15,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:44:16,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:16,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:16,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:16,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:16,065 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:16,066 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-24 23:44:16,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/082003037/512e3d8196e8467f8304094911d4aada/FLAG142a43c6d [2020-09-24 23:44:16,762 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:16,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-24 23:44:16,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/082003037/512e3d8196e8467f8304094911d4aada/FLAG142a43c6d [2020-09-24 23:44:17,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/082003037/512e3d8196e8467f8304094911d4aada [2020-09-24 23:44:17,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:17,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:17,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:17,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:17,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:17,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569e4624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17, skipping insertion in model container [2020-09-24 23:44:17,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:17,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:17,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:17,486 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:17,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:17,634 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:17,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17 WrapperNode [2020-09-24 23:44:17,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:17,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:17,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:17,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:17,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... [2020-09-24 23:44:17,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:17,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:17,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:17,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:17,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 23:44:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-09-24 23:44:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 23:44:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-09-24 23:44:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:18,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:18,495 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-09-24 23:44:18,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:18 BoogieIcfgContainer [2020-09-24 23:44:18,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:18,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:18,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:18,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:18,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:17" (1/3) ... [2020-09-24 23:44:18,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7e60f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:18, skipping insertion in model container [2020-09-24 23:44:18,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:17" (2/3) ... [2020-09-24 23:44:18,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7e60f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:18, skipping insertion in model container [2020-09-24 23:44:18,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:18" (3/3) ... [2020-09-24 23:44:18,512 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-09-24 23:44:18,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:18,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:18,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:18,598 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:18,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:18,598 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:18,598 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:18,599 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:18,599 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:18,599 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:18,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-09-24 23:44:18,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 23:44:18,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:18,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:44:18,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:18,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1596885088, now seen corresponding path program 1 times [2020-09-24 23:44:18,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:18,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750687189] [2020-09-24 23:44:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:19,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:19,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 23:44:19,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:44:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-24 23:44:19,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 23:44:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:44:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:19,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:19,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:44:19,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:44:19,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:19,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:44:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:19,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:19,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:19,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 23:44:19,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:44:19,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:44:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:44:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:19,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:19,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:44:19,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:44:19,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:44:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:44:19,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750687189] [2020-09-24 23:44:19,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:19,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:19,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178152581] [2020-09-24 23:44:19,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:19,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:19,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:19,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:19,385 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-09-24 23:44:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:19,871 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2020-09-24 23:44:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:19,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-24 23:44:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:19,890 INFO L225 Difference]: With dead ends: 352 [2020-09-24 23:44:19,890 INFO L226 Difference]: Without dead ends: 172 [2020-09-24 23:44:19,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:44:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-24 23:44:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-24 23:44:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-24 23:44:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 178 transitions. [2020-09-24 23:44:20,017 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 178 transitions. Word has length 42 [2020-09-24 23:44:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:20,018 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 178 transitions. [2020-09-24 23:44:20,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 178 transitions. [2020-09-24 23:44:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 23:44:20,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:20,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:44:20,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:20,023 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:20,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1781987569, now seen corresponding path program 1 times [2020-09-24 23:44:20,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:20,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429748059] [2020-09-24 23:44:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:20,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 23:44:20,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 23:44:20,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:44:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 23:44:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 23:44:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:20,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:20,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:44:20,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:20,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:44:20,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:44:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:20,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:20,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 23:44:20,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 23:44:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:20,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:20,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 23:44:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:20,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:44:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:44:20,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:44:20,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429748059] [2020-09-24 23:44:20,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:20,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:44:20,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934382966] [2020-09-24 23:44:20,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:44:20,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:20,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:44:20,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:44:20,476 INFO L87 Difference]: Start difference. First operand 172 states and 178 transitions. Second operand 5 states. [2020-09-24 23:44:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:20,914 INFO L93 Difference]: Finished difference Result 179 states and 184 transitions. [2020-09-24 23:44:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:44:20,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-24 23:44:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:20,919 INFO L225 Difference]: With dead ends: 179 [2020-09-24 23:44:20,919 INFO L226 Difference]: Without dead ends: 172 [2020-09-24 23:44:20,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-24 23:44:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-24 23:44:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-24 23:44:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 177 transitions. [2020-09-24 23:44:20,954 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 177 transitions. Word has length 64 [2020-09-24 23:44:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:20,958 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 177 transitions. [2020-09-24 23:44:20,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:44:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 177 transitions. [2020-09-24 23:44:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 23:44:20,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:20,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:44:20,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:20,971 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:20,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1985524025, now seen corresponding path program 1 times [2020-09-24 23:44:20,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:20,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150471161] [2020-09-24 23:44:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:21,035 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:21,036 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:21,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:44:21,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:21 BoogieIcfgContainer [2020-09-24 23:44:21,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:21,079 INFO L168 Benchmark]: Toolchain (without parser) took 3965.93 ms. Allocated memory was 108.5 MB in the beginning and 217.1 MB in the end (delta: 108.5 MB). Free memory was 73.2 MB in the beginning and 169.4 MB in the end (delta: -96.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:21,080 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 108.5 MB. Free memory was 91.2 MB in the beginning and 91.1 MB in the end (delta: 105.2 kB). Peak memory consumption was 105.2 kB. Max. memory is 7.1 GB. [2020-09-24 23:44:21,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.09 ms. Allocated memory was 108.5 MB in the beginning and 159.9 MB in the end (delta: 51.4 MB). Free memory was 72.7 MB in the beginning and 144.0 MB in the end (delta: -71.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:21,083 INFO L168 Benchmark]: Boogie Preprocessor took 67.69 ms. Allocated memory is still 159.9 MB. Free memory was 144.0 MB in the beginning and 141.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:21,084 INFO L168 Benchmark]: RCFGBuilder took 798.26 ms. Allocated memory is still 159.9 MB. Free memory was 141.2 MB in the beginning and 99.4 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:21,086 INFO L168 Benchmark]: TraceAbstraction took 2570.76 ms. Allocated memory was 159.9 MB in the beginning and 217.1 MB in the end (delta: 57.1 MB). Free memory was 98.9 MB in the beginning and 169.4 MB in the end (delta: -70.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:44:21,095 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 108.5 MB. Free memory was 91.2 MB in the beginning and 91.1 MB in the end (delta: 105.2 kB). Peak memory consumption was 105.2 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 517.09 ms. Allocated memory was 108.5 MB in the beginning and 159.9 MB in the end (delta: 51.4 MB). Free memory was 72.7 MB in the beginning and 144.0 MB in the end (delta: -71.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.69 ms. Allocated memory is still 159.9 MB. Free memory was 144.0 MB in the beginning and 141.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 798.26 ms. Allocated memory is still 159.9 MB. Free memory was 141.2 MB in the beginning and 99.4 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2570.76 ms. Allocated memory was 159.9 MB in the beginning and 217.1 MB in the end (delta: 57.1 MB). Free memory was 98.9 MB in the beginning and 169.4 MB in the end (delta: -70.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 186 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 361 SDtfs, 42 SDslu, 354 SDs, 0 SdLazy, 501 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 8209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...