/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=SHALLOWEST --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_1231.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:09,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:09,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:09,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:09,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:09,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:09,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:09,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:09,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:09,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:09,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:09,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:09,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:09,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:09,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:09,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:09,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:09,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:09,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:09,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:09,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:09,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:09,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:09,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:09,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:09,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:09,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:09,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:09,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:09,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:09,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:09,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:09,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:09,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:09,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:09,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:09,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:09,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:09,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:09,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:09,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:09,938 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 [2020-10-27 01:04:09,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:09,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:09,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:09,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:09,992 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:09,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:09,993 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:09,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:09,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:09,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:09,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:09,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:09,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:09,995 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:09,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:09,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:09,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:09,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:09,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:09,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:09,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:09,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:09,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:09,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:09,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:09,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:10,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:10,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:10,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:10,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:10,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:10,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:10,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:10,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:10,409 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:10,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2020-10-27 01:04:10,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4968be69f/2f914fafb6c24b16a5221b431eb1f9cf/FLAG583f535f2 [2020-10-27 01:04:11,001 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:11,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2020-10-27 01:04:11,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4968be69f/2f914fafb6c24b16a5221b431eb1f9cf/FLAG583f535f2 [2020-10-27 01:04:11,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4968be69f/2f914fafb6c24b16a5221b431eb1f9cf [2020-10-27 01:04:11,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:11,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:11,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:11,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:11,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:11,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ffe4bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11, skipping insertion in model container [2020-10-27 01:04:11,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:11,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:11,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:11,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:11,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:11,750 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:11,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11 WrapperNode [2020-10-27 01:04:11,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:11,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:11,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:11,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:11,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (1/1) ... [2020-10-27 01:04:11,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:11,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:11,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:11,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:11,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (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 [2020-10-27 01:04:11,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-27 01:04:11,889 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-10-27 01:04:11,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:04:11,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 01:04:11,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-27 01:04:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-10-27 01:04:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:04:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 01:04:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:12,562 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:12,563 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 01:04:12,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:12 BoogieIcfgContainer [2020-10-27 01:04:12,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:12,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:12,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:12,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:12,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:11" (1/3) ... [2020-10-27 01:04:12,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fffc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:12, skipping insertion in model container [2020-10-27 01:04:12,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:11" (2/3) ... [2020-10-27 01:04:12,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fffc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:12, skipping insertion in model container [2020-10-27 01:04:12,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:12" (3/3) ... [2020-10-27 01:04:12,577 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-10-27 01:04:12,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:12,600 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:12,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:12,659 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:12,660 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:12,660 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:12,660 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:12,661 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:12,661 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:12,661 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:12,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:12,686 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-27 01:04:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 01:04:12,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:12,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:12,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:12,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:12,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1609132544, now seen corresponding path program 1 times [2020-10-27 01:04:12,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:12,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174967830] [2020-10-27 01:04:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:13,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 01:04:14,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:04:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1189 [2020-10-27 01:04:14,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:14,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 01:04:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:04:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:04:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:14,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:14,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:14,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:04:14,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:14,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:14,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:14,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:14,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:04:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:14,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:04:14,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:04:14,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:04:14,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:04:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:14,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:04:14,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:04:14,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:14,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:14,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:04:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:14,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:14,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:04:14,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174967830] [2020-10-27 01:04:14,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:14,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:14,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610672024] [2020-10-27 01:04:14,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:14,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:14,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:14,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:14,397 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 6 states. [2020-10-27 01:04:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:15,327 INFO L93 Difference]: Finished difference Result 129 states and 181 transitions. [2020-10-27 01:04:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:04:15,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-27 01:04:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:15,351 INFO L225 Difference]: With dead ends: 129 [2020-10-27 01:04:15,354 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 01:04:15,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:04:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 01:04:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-10-27 01:04:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-27 01:04:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2020-10-27 01:04:15,449 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 37 [2020-10-27 01:04:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:15,450 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2020-10-27 01:04:15,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2020-10-27 01:04:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 01:04:15,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:15,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:15,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:15,456 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:15,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1237790463, now seen corresponding path program 1 times [2020-10-27 01:04:15,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:15,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864040508] [2020-10-27 01:04:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:04:15,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-27 01:04:15,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 01:04:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:15,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:04:15,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:15,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:15,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:04:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 01:04:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:15,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:15,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:04:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:04:15,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:04:15,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:04:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:15,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:04:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:04:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:04:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 01:04:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:15,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:15,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:04:15,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864040508] [2020-10-27 01:04:15,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:15,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:15,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385355234] [2020-10-27 01:04:15,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:15,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:15,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:15,990 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand 6 states. [2020-10-27 01:04:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:16,527 INFO L93 Difference]: Finished difference Result 89 states and 116 transitions. [2020-10-27 01:04:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:16,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-27 01:04:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:16,536 INFO L225 Difference]: With dead ends: 89 [2020-10-27 01:04:16,536 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 01:04:16,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:04:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 01:04:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-27 01:04:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 01:04:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-10-27 01:04:16,562 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 43 [2020-10-27 01:04:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:16,562 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-10-27 01:04:16,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-10-27 01:04:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 01:04:16,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:16,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:16,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:16,568 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1512796237, now seen corresponding path program 1 times [2020-10-27 01:04:16,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:16,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213889589] [2020-10-27 01:04:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:04:16,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:16,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-27 01:04:16,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 01:04:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:16,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:04:16,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:16,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:16,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:04:16,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 01:04:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:16,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:04:16,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:04:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:04:17,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:04:17,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 01:04:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 01:04:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:04:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:04:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:17,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:17,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:04:17,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213889589] [2020-10-27 01:04:17,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:17,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:17,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941890708] [2020-10-27 01:04:17,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:17,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:17,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:17,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:17,124 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 6 states. [2020-10-27 01:04:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:17,668 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-10-27 01:04:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:17,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-27 01:04:17,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:17,673 INFO L225 Difference]: With dead ends: 93 [2020-10-27 01:04:17,673 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 01:04:17,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:04:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 01:04:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-27 01:04:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 01:04:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-10-27 01:04:17,686 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 44 [2020-10-27 01:04:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:17,686 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-10-27 01:04:17,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-10-27 01:04:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 01:04:17,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:17,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:17,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:04:17,689 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1999909509, now seen corresponding path program 1 times [2020-10-27 01:04:17,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:17,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275944329] [2020-10-27 01:04:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 01:04:17,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 01:04:17,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 01:04:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:17,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:04:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:17,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 01:04:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:17,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:17,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:17,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:04:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:04:17,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:04:17,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:04:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:04:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:18,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:18,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:04:18,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 01:04:18,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:04:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:18,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:04:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:18,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:18,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:18,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:18,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:18,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:18,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:04:18,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275944329] [2020-10-27 01:04:18,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:18,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:18,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133384436] [2020-10-27 01:04:18,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:18,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:18,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:18,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:18,103 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 6 states. [2020-10-27 01:04:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:18,659 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2020-10-27 01:04:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:18,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-27 01:04:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:18,663 INFO L225 Difference]: With dead ends: 97 [2020-10-27 01:04:18,663 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 01:04:18,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:04:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 01:04:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-10-27 01:04:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 01:04:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-10-27 01:04:18,675 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 45 [2020-10-27 01:04:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:18,676 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-10-27 01:04:18,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-10-27 01:04:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:04:18,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:18,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:18,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:04:18,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:18,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1038823249, now seen corresponding path program 1 times [2020-10-27 01:04:18,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:18,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673992639] [2020-10-27 01:04:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:18,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:18,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 01:04:18,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 01:04:18,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 01:04:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:18,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:18,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:18,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:18,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:18,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:04:18,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-27 01:04:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:19,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:19,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 01:04:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:19,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:04:19,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:04:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:04:19,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 01:04:19,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:04:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:04:19,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:04:19,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:04:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:04:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:19,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:04:19,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:04:19,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673992639] [2020-10-27 01:04:19,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:19,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:19,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49491001] [2020-10-27 01:04:19,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:19,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:19,177 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 6 states. [2020-10-27 01:04:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:19,650 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-10-27 01:04:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:19,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 01:04:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:19,656 INFO L225 Difference]: With dead ends: 93 [2020-10-27 01:04:19,656 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 01:04:19,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:04:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 01:04:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-27 01:04:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 01:04:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-10-27 01:04:19,671 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 46 [2020-10-27 01:04:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:19,671 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-10-27 01:04:19,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-10-27 01:04:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:04:19,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:19,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:19,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:04:19,674 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:19,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1902834350, now seen corresponding path program 1 times [2020-10-27 01:04:19,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:19,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077481999] [2020-10-27 01:04:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 01:04:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 01:04:19,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:04:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 01:04:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:04:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:19,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:04:19,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:19,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:04:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 01:04:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:04:19,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:04:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:04:19,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:04:19,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:04:19,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:04:19,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:04:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:04:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:04:19,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077481999] [2020-10-27 01:04:19,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:19,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:04:19,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032917350] [2020-10-27 01:04:19,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:04:19,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:19,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:04:19,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:04:19,915 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 5 states. [2020-10-27 01:04:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:20,356 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-10-27 01:04:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:04:20,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-27 01:04:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:20,359 INFO L225 Difference]: With dead ends: 71 [2020-10-27 01:04:20,360 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 01:04:20,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 01:04:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-27 01:04:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 01:04:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2020-10-27 01:04:20,381 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 46 [2020-10-27 01:04:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:20,382 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2020-10-27 01:04:20,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:04:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2020-10-27 01:04:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 01:04:20,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:20,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:20,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:04:20,384 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:20,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1207218559, now seen corresponding path program 1 times [2020-10-27 01:04:20,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:20,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374986659] [2020-10-27 01:04:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:20,413 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:20,414 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:20,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:04:20,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:20 BoogieIcfgContainer [2020-10-27 01:04:20,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:20,452 INFO L168 Benchmark]: Toolchain (without parser) took 9033.14 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 132.7 MB in the beginning and 174.9 MB in the end (delta: -42.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:20,453 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:20,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.18 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 120.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:20,457 INFO L168 Benchmark]: Boogie Preprocessor took 52.14 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:20,458 INFO L168 Benchmark]: RCFGBuilder took 761.60 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 129.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:20,460 INFO L168 Benchmark]: TraceAbstraction took 7878.03 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 129.0 MB in the beginning and 174.9 MB in the end (delta: -45.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:20,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.18 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 120.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.14 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 761.60 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 129.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7878.03 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 129.0 MB in the beginning and 174.9 MB in the end (delta: -45.9 MB). Peak memory consumption was 23.7 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 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L70] CALL, EXPR isnan_float(x) [L59] return x != x; [L70] RET, EXPR isnan_float(x) [L70] EXPR isnan_float(x) && !isnan_float(y) [L70] CALL, EXPR isnan_float(y) [L59] return x != x; [L70] RET, EXPR isnan_float(y) [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L73] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] RET, EXPR fmin_float(x, y) [L73] float res = fmin_float(x, y); [L76] CALL, EXPR isnan_float(x) [L59] return x != x; [L76] RET, EXPR isnan_float(x) [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] CALL, EXPR isnan_float(y) [L59] return x != x; [L76] RET, EXPR isnan_float(y) [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1231.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.7s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 268 SDslu, 827 SDs, 0 SdLazy, 688 SolverSat, 228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 26554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 48/48 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...