/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:13,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:13,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:13,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:13,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:13,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:13,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:13,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:13,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:13,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:13,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:13,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:13,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:13,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:13,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:13,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:13,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:13,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:13,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:13,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:13,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:13,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:13,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:13,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:13,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:13,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:13,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:13,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:13,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:13,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:13,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:13,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:13,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:13,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:13,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:13,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:13,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:13,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:13,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:13,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:13,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:13,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:27:13,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:13,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:13,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:13,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:13,727 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:13,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:13,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:13,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:13,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:13,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:13,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:13,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:13,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:13,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:13,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:13,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:13,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:13,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:13,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:13,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:13,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:13,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:13,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:13,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:13,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:13,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:13,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:13,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:13,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:13,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:14,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:14,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:14,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:14,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:14,155 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:14,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-10-28 14:27:14,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c1a8351/4ad0f2f206114112ab1664b31e31a851/FLAG0758aa6d1 [2020-10-28 14:27:14,973 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:14,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-10-28 14:27:14,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c1a8351/4ad0f2f206114112ab1664b31e31a851/FLAG0758aa6d1 [2020-10-28 14:27:15,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c1a8351/4ad0f2f206114112ab1664b31e31a851 [2020-10-28 14:27:15,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:15,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:15,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:15,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:15,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:15,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137875e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15, skipping insertion in model container [2020-10-28 14:27:15,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:15,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:15,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:15,651 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:15,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:15,703 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:15,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15 WrapperNode [2020-10-28 14:27:15,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:15,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:15,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:15,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:15,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... [2020-10-28 14:27:15,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:15,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:15,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:15,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:15,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-28 14:27:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-28 14:27:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-28 14:27:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:27:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-28 14:27:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-28 14:27:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-28 14:27:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:16,478 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:16,479 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 14:27:16,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:16 BoogieIcfgContainer [2020-10-28 14:27:16,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:16,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:16,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:16,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:16,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:15" (1/3) ... [2020-10-28 14:27:16,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648f99c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:16, skipping insertion in model container [2020-10-28 14:27:16,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:15" (2/3) ... [2020-10-28 14:27:16,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648f99c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:16, skipping insertion in model container [2020-10-28 14:27:16,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:16" (3/3) ... [2020-10-28 14:27:16,496 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-10-28 14:27:16,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:16,516 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:16,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:16,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:16,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:16,577 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:16,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:16,578 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:16,578 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:16,578 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:16,578 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:16,601 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-28 14:27:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:27:16,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:16,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:16,619 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash -720338700, now seen corresponding path program 1 times [2020-10-28 14:27:16,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:16,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761585297] [2020-10-28 14:27:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:17,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:27:17,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-28 14:27:17,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:17,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 14:27:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 14:27:17,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:17,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:17,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:17,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:27:17,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:17,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:27:17,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:17,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:27:17,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 14:27:17,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:17,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:27:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:27:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:27:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:17,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:17,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:27:17,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:27:17,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:17,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:27:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:27:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:27:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:17,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:17,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:17,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:17,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:27:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:17,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:17,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761585297] [2020-10-28 14:27:17,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:17,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:17,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536276714] [2020-10-28 14:27:17,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:17,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:17,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:17,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:17,603 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-28 14:27:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:17,808 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-28 14:27:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:17,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 14:27:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:17,820 INFO L225 Difference]: With dead ends: 76 [2020-10-28 14:27:17,821 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 14:27:17,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:27:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 14:27:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-28 14:27:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 14:27:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-10-28 14:27:17,880 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-10-28 14:27:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:17,880 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-10-28 14:27:17,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-10-28 14:27:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:27:17,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:17,883 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] [2020-10-28 14:27:17,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:17,884 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2051024786, now seen corresponding path program 1 times [2020-10-28 14:27:17,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:17,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181001462] [2020-10-28 14:27:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:17,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:27:18,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 14:27:18,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:27:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:18,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:27:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:27:18,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 14:27:18,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:27:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:27:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:27:18,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 14:27:18,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:27:18,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:27:18,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:27:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:18,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:27:18,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:18,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181001462] [2020-10-28 14:27:18,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:18,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:27:18,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960650421] [2020-10-28 14:27:18,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:27:18,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:18,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:27:18,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:27:18,482 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2020-10-28 14:27:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:18,639 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-10-28 14:27:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:27:18,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-28 14:27:18,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:18,643 INFO L225 Difference]: With dead ends: 53 [2020-10-28 14:27:18,643 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 14:27:18,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:27:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 14:27:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-28 14:27:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:27:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-28 14:27:18,657 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-10-28 14:27:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:18,658 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-28 14:27:18,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:27:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-28 14:27:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:27:18,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:18,660 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] [2020-10-28 14:27:18,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:18,660 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:18,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:18,661 INFO L82 PathProgramCache]: Analyzing trace with hash -426185967, now seen corresponding path program 1 times [2020-10-28 14:27:18,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:18,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093958057] [2020-10-28 14:27:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:27:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 14:27:18,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:27:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:18,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:27:18,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:27:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:27:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 14:27:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:27:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:27:18,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:27:18,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:27:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 14:27:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:18,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:27:18,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:18,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:18,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093958057] [2020-10-28 14:27:18,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:18,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:27:18,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949899204] [2020-10-28 14:27:18,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:27:18,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:27:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:27:18,960 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-28 14:27:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:19,121 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-10-28 14:27:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:27:19,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-28 14:27:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:19,123 INFO L225 Difference]: With dead ends: 57 [2020-10-28 14:27:19,124 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:27:19,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:27:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:27:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-28 14:27:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:27:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-28 14:27:19,135 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 29 [2020-10-28 14:27:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:19,135 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-28 14:27:19,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:27:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-28 14:27:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:27:19,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:19,137 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] [2020-10-28 14:27:19,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:27:19,137 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:19,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1952444690, now seen corresponding path program 1 times [2020-10-28 14:27:19,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:19,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56280244] [2020-10-28 14:27:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:27:19,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 14:27:19,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 14:27:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:19,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:19,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:27:19,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:27:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:27:19,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:27:19,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:19,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:27:19,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:19,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:27:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:27:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:27:19,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:27:19,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:27:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:19,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:27:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:19,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:27:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:19,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56280244] [2020-10-28 14:27:19,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:19,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:27:19,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630899257] [2020-10-28 14:27:19,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:27:19,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:19,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:27:19,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:27:19,526 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-28 14:27:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:19,732 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-28 14:27:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:27:19,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-28 14:27:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:19,734 INFO L225 Difference]: With dead ends: 61 [2020-10-28 14:27:19,734 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 14:27:19,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:27:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 14:27:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2020-10-28 14:27:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:27:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-28 14:27:19,744 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 30 [2020-10-28 14:27:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:19,745 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-28 14:27:19,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:27:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-28 14:27:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:27:19,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:19,747 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] [2020-10-28 14:27:19,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:27:19,747 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash 231005741, now seen corresponding path program 1 times [2020-10-28 14:27:19,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:19,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851651406] [2020-10-28 14:27:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:27:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 14:27:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 14:27:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:27:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:19,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:19,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:27:19,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:27:19,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:19,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:27:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:19,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:27:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:19,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:20,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:20,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:27:20,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:27:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:20,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:27:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:20,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 14:27:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:20,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:20,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:27:20,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:20,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:20,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851651406] [2020-10-28 14:27:20,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:20,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:27:20,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655418379] [2020-10-28 14:27:20,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:27:20,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:20,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:27:20,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:27:20,051 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-28 14:27:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:20,239 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-10-28 14:27:20,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:27:20,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-28 14:27:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:20,241 INFO L225 Difference]: With dead ends: 57 [2020-10-28 14:27:20,241 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:27:20,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:27:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:27:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-28 14:27:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:27:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-28 14:27:20,250 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-10-28 14:27:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:20,251 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-28 14:27:20,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:27:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-28 14:27:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:27:20,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:20,252 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] [2020-10-28 14:27:20,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:27:20,253 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:20,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:20,253 INFO L82 PathProgramCache]: Analyzing trace with hash -279528436, now seen corresponding path program 1 times [2020-10-28 14:27:20,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:20,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281933848] [2020-10-28 14:27:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:20,270 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:20,270 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:20,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:27:20,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:20 BoogieIcfgContainer [2020-10-28 14:27:20,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:20,296 INFO L168 Benchmark]: Toolchain (without parser) took 4959.03 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 125.6 MB in the beginning and 87.4 MB in the end (delta: 38.1 MB). Peak memory consumption was 82.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:20,297 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:20,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:20,299 INFO L168 Benchmark]: Boogie Preprocessor took 55.83 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:20,300 INFO L168 Benchmark]: RCFGBuilder took 719.42 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 130.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:20,301 INFO L168 Benchmark]: TraceAbstraction took 3807.40 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 129.9 MB in the beginning and 87.4 MB in the end (delta: 42.5 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:20,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 362.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.83 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.42 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 130.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3807.40 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 129.9 MB in the beginning and 87.4 MB in the end (delta: 42.5 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L71] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] RET, EXPR fmax_double(x, y) [L71] double res = fmax_double(x, y); [L73] CALL, EXPR isnan_double(res) [L18] return x != x; [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 60 SDslu, 419 SDs, 0 SdLazy, 315 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 12402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...