/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:09:07,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:09:07,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:09:07,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:09:07,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:09:07,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:09:07,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:09:07,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:09:07,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:09:07,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:09:07,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:09:07,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:09:07,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:09:07,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:09:07,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:09:07,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:09:07,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:09:07,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:09:07,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:09:07,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:09:07,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:09:07,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:09:07,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:09:07,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:09:07,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:09:07,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:09:07,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:09:07,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:09:07,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:09:07,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:09:07,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:09:07,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:09:07,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:09:07,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:09:07,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:09:07,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:09:07,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:09:07,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:09:07,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:09:07,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:09:07,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:09:07,742 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 [2020-10-29 09:09:07,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:09:07,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:09:07,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:09:07,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:09:07,770 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:09:07,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:09:07,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:09:07,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:09:07,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:09:07,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:09:07,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:09:07,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:09:07,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:09:07,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:09:07,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:09:07,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:09:07,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:09:07,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:09:07,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:09:07,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:09:07,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:09:07,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:09:07,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:09:07,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:09:07,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:09:07,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:09:07,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:09:07,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:09:07,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:09:07,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:09:08,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:09:08,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:09:08,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:09:08,215 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:09:08,216 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:09:08,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-10-29 09:09:08,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841571462/9dc2f7932e6643cdb3d2c08a4b3ef870/FLAGc2fc69176 [2020-10-29 09:09:09,015 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:09,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-10-29 09:09:09,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841571462/9dc2f7932e6643cdb3d2c08a4b3ef870/FLAGc2fc69176 [2020-10-29 09:09:09,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841571462/9dc2f7932e6643cdb3d2c08a4b3ef870 [2020-10-29 09:09:09,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:09,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:09,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:09,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:09,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:09,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc2d2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09, skipping insertion in model container [2020-10-29 09:09:09,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:09,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:09,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:09,612 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:09,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:09,666 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:09,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09 WrapperNode [2020-10-29 09:09:09,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:09,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:09,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:09,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:09,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (1/1) ... [2020-10-29 09:09:09,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:09,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:09,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:09,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:09,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (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 [2020-10-29 09:09:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-29 09:09:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-10-29 09:09:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:09:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-29 09:09:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:09:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-10-29 09:09:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:09:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:09:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:10,401 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:10,402 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:09:10,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:10 BoogieIcfgContainer [2020-10-29 09:09:10,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:10,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:10,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:10,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:10,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:09" (1/3) ... [2020-10-29 09:09:10,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27405000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:10, skipping insertion in model container [2020-10-29 09:09:10,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:09" (2/3) ... [2020-10-29 09:09:10,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27405000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:10, skipping insertion in model container [2020-10-29 09:09:10,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:10" (3/3) ... [2020-10-29 09:09:10,418 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-10-29 09:09:10,430 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:10,435 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:10,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:10,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:10,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:10,495 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:10,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:10,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:10,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:10,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:10,496 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-29 09:09:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:09:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:10,538 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] [2020-10-29 09:09:10,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:10,547 INFO L82 PathProgramCache]: Analyzing trace with hash -836905228, now seen corresponding path program 1 times [2020-10-29 09:09:10,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:10,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263354703] [2020-10-29 09:09:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:11,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:09:11,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:11,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-29 09:09:11,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:11,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 09:09:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:09:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:11,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:11,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:09:11,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:11,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:09:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:09:11,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:11,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 09:09:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:09:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:11,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:09:11,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:11,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:09:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:11,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:09:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:09:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:11,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:11,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:09:11,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:11,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:09:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:09:11,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263354703] [2020-10-29 09:09:11,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:11,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:09:11,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99598974] [2020-10-29 09:09:11,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:09:11,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:11,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:09:11,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:09:11,427 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-10-29 09:09:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:11,682 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2020-10-29 09:09:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:09:11,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-29 09:09:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:11,694 INFO L225 Difference]: With dead ends: 80 [2020-10-29 09:09:11,695 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 09:09:11,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:09:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 09:09:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 09:09:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 09:09:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-29 09:09:11,771 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 27 [2020-10-29 09:09:11,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:11,772 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-29 09:09:11,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:09:11,772 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-29 09:09:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:09:11,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:11,777 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] [2020-10-29 09:09:11,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:11,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:11,780 INFO L82 PathProgramCache]: Analyzing trace with hash -988525967, now seen corresponding path program 1 times [2020-10-29 09:09:11,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:11,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589563879] [2020-10-29 09:09:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:11,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:09:11,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 09:09:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:11,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:09:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:12,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:12,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:09:12,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:09:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 09:09:12,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 09:09:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:09:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:09:12,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:09:12,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:09:12,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:12,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 09:09:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:09:12,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:09:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:09:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:09:12,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589563879] [2020-10-29 09:09:12,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:12,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:09:12,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854945980] [2020-10-29 09:09:12,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:09:12,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:12,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:09:12,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:09:12,223 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-29 09:09:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:12,425 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-10-29 09:09:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:09:12,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-29 09:09:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:12,427 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:09:12,428 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 09:09:12,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:09:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 09:09:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-29 09:09:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 09:09:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-29 09:09:12,441 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 29 [2020-10-29 09:09:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:12,441 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-29 09:09:12,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:09:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-29 09:09:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:09:12,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:12,443 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] [2020-10-29 09:09:12,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:12,444 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash -64227367, now seen corresponding path program 1 times [2020-10-29 09:09:12,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:12,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356066530] [2020-10-29 09:09:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:09:12,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 09:09:12,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 09:09:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:12,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:09:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:12,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:09:12,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 09:09:12,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:09:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:12,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:09:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:09:12,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 09:09:12,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:09:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:09:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:09:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:13,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:13,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:13,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:09:13,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:13,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:09:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:09:13,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356066530] [2020-10-29 09:09:13,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:13,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:09:13,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937027479] [2020-10-29 09:09:13,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:09:13,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:13,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:09:13,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:09:13,043 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-29 09:09:13,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:13,252 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-29 09:09:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:09:13,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 09:09:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:13,254 INFO L225 Difference]: With dead ends: 61 [2020-10-29 09:09:13,254 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 09:09:13,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:09:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 09:09:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2020-10-29 09:09:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 09:09:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-29 09:09:13,265 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 30 [2020-10-29 09:09:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:13,266 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-29 09:09:13,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:09:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-29 09:09:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:09:13,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:13,267 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] [2020-10-29 09:09:13,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:09:13,268 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:13,268 INFO L82 PathProgramCache]: Analyzing trace with hash 266554572, now seen corresponding path program 1 times [2020-10-29 09:09:13,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:13,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264900913] [2020-10-29 09:09:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:13,286 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:13,287 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:13,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:09:13,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:13 BoogieIcfgContainer [2020-10-29 09:09:13,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:13,310 INFO L168 Benchmark]: Toolchain (without parser) took 3943.61 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 130.4 MB in the beginning and 107.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,311 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 155.2 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:13,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.20 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 119.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,313 INFO L168 Benchmark]: Boogie Preprocessor took 44.28 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 118.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,313 INFO L168 Benchmark]: RCFGBuilder took 691.03 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 134.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,314 INFO L168 Benchmark]: TraceAbstraction took 2898.79 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 133.5 MB in the beginning and 107.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 155.2 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.20 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 119.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.28 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 118.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 691.03 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 134.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2898.79 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 133.5 MB in the beginning and 107.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 59.2 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 someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L64] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] RET, EXPR __fpclassify_float(x) [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] RET, EXPR fmax_float(x, y) [L64] float res = fmax_float(x, y); [L66] CALL, EXPR isnan_float(res) [L56] return x != x; [L66] RET, EXPR isnan_float(res) [L66] COND TRUE !isnan_float(res) [L67] CALL reach_error() [L3] __assert_fail("0", "float_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: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 36 SDslu, 300 SDs, 0 SdLazy, 208 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 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, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 7447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...