/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=DEEPEST --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/eca-rers2012/Problem04_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:58:47,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:58:47,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:58:47,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:58:47,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:58:47,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:58:47,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:58:47,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:58:47,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:58:47,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:58:47,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:58:47,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:58:47,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:58:47,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:58:47,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:58:47,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:58:47,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:58:47,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:58:47,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:58:47,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:58:47,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:58:47,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:58:47,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:58:47,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:58:47,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:58:47,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:58:47,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:58:47,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:58:47,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:58:47,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:58:47,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:58:47,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:58:47,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:58:47,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:58:47,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:58:47,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:58:47,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:58:47,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:58:47,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:58:47,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:58:47,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:58:47,875 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 15:58:47,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:58:47,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:58:47,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:58:47,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:58:47,916 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:58:47,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:58:47,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:58:47,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:58:47,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:58:47,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:58:47,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:58:47,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:58:47,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:58:47,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:58:47,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:58:47,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:58:47,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:58:47,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:58:47,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:58:47,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:58:47,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:58:47,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:58:47,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:58:47,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:58:47,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:58:47,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:58:47,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:58:47,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:58:47,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:58:47,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:58:48,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:58:48,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:58:48,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:58:48,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:58:48,327 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:58:48,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label30.c [2020-10-27 15:58:48,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/043aa36f1/7ed0cd4944d1438a87dd8d7f2f4cf3e3/FLAGd561f437e [2020-10-27 15:58:49,464 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:58:49,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label30.c [2020-10-27 15:58:49,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/043aa36f1/7ed0cd4944d1438a87dd8d7f2f4cf3e3/FLAGd561f437e [2020-10-27 15:58:49,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/043aa36f1/7ed0cd4944d1438a87dd8d7f2f4cf3e3 [2020-10-27 15:58:49,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:58:49,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:58:49,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:58:49,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:58:49,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:58:49,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:58:49" (1/1) ... [2020-10-27 15:58:49,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b4610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:49, skipping insertion in model container [2020-10-27 15:58:49,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:58:49" (1/1) ... [2020-10-27 15:58:49,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:58:50,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:58:51,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:58:51,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:58:52,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:58:52,263 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:58:52,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52 WrapperNode [2020-10-27 15:58:52,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:58:52,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:58:52,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:58:52,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:58:52,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (1/1) ... [2020-10-27 15:58:52,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (1/1) ... [2020-10-27 15:58:52,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (1/1) ... [2020-10-27 15:58:52,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (1/1) ... [2020-10-27 15:58:52,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (1/1) ... [2020-10-27 15:58:52,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (1/1) ... [2020-10-27 15:58:52,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (1/1) ... [2020-10-27 15:58:52,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:58:52,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:58:52,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:58:52,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:58:52,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (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 15:58:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:58:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:58:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:58:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:58:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 15:58:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 15:58:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 15:58:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:58:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:58:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 15:58:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 15:58:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 15:58:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:58:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:58:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:58:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:58:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:58:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:58:57,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:58:57,935 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:58:57,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:58:57 BoogieIcfgContainer [2020-10-27 15:58:57,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:58:57,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:58:57,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:58:57,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:58:57,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:58:49" (1/3) ... [2020-10-27 15:58:57,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56822bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:58:57, skipping insertion in model container [2020-10-27 15:58:57,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:52" (2/3) ... [2020-10-27 15:58:57,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56822bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:58:57, skipping insertion in model container [2020-10-27 15:58:57,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:58:57" (3/3) ... [2020-10-27 15:58:57,953 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label30.c [2020-10-27 15:58:57,965 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:58:57,972 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:58:57,986 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:58:58,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:58:58,033 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:58:58,034 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:58:58,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:58:58,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:58:58,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:58:58,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:58:58,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:58:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 15:58:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-27 15:58:58,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:58:58,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:58,181 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:58:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:58:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash 525808188, now seen corresponding path program 1 times [2020-10-27 15:58:58,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:58:58,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596770627] [2020-10-27 15:58:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:58:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 810 [2020-10-27 15:59:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 15:59:03,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:59:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:59:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 801 [2020-10-27 15:59:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:59:05,024 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:59:05,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:59:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:05,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:05,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:59:05,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 15:59:05,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:59:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:59:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:59:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:59:06,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596770627] [2020-10-27 15:59:06,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:59:06,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:59:06,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756602406] [2020-10-27 15:59:06,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:59:06,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:59:06,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:59:06,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:59:06,156 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-27 15:59:06,375 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:59:06,753 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 15:59:23,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:59:23,975 INFO L93 Difference]: Finished difference Result 3526 states and 6828 transitions. [2020-10-27 15:59:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:59:23,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 794 [2020-10-27 15:59:23,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:59:24,030 INFO L225 Difference]: With dead ends: 3526 [2020-10-27 15:59:24,031 INFO L226 Difference]: Without dead ends: 2548 [2020-10-27 15:59:24,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:59:24,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-27 15:59:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2535. [2020-10-27 15:59:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-10-27 15:59:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 4299 transitions. [2020-10-27 15:59:24,233 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 4299 transitions. Word has length 794 [2020-10-27 15:59:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:59:24,238 INFO L481 AbstractCegarLoop]: Abstraction has 2535 states and 4299 transitions. [2020-10-27 15:59:24,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:59:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 4299 transitions. [2020-10-27 15:59:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-27 15:59:24,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:59:24,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:24,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:59:24,270 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:59:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:59:24,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1226671912, now seen corresponding path program 1 times [2020-10-27 15:59:24,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:59:24,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975808381] [2020-10-27 15:59:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:59:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:29,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:29,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-27 15:59:29,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:59:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 15:59:29,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:59:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 15:59:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:59:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 15:59:29,769 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:59:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:59:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:29,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:29,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:59:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:59:29,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:59:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:59:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:59:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:59:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:29,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:29,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:59:29,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:29,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:59:29,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:29,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:59:29,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:29,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 15:59:29,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:29,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 15:59:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:29,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:29,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 15:59:29,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 15:59:29,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:59:29,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:59:29,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:59:30,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975808381] [2020-10-27 15:59:30,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:59:30,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:59:30,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173852863] [2020-10-27 15:59:30,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:59:30,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:59:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:59:30,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:59:30,450 INFO L87 Difference]: Start difference. First operand 2535 states and 4299 transitions. Second operand 7 states. [2020-10-27 15:59:30,748 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:59:31,202 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:59:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:59:51,127 INFO L93 Difference]: Finished difference Result 10284 states and 17803 transitions. [2020-10-27 15:59:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:59:51,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 822 [2020-10-27 15:59:51,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:59:51,177 INFO L225 Difference]: With dead ends: 10284 [2020-10-27 15:59:51,177 INFO L226 Difference]: Without dead ends: 7755 [2020-10-27 15:59:51,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:59:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7755 states. [2020-10-27 15:59:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7755 to 7730. [2020-10-27 15:59:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7730 states. [2020-10-27 15:59:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 11295 transitions. [2020-10-27 15:59:51,438 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 11295 transitions. Word has length 822 [2020-10-27 15:59:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:59:51,438 INFO L481 AbstractCegarLoop]: Abstraction has 7730 states and 11295 transitions. [2020-10-27 15:59:51,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:59:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 11295 transitions. [2020-10-27 15:59:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-27 15:59:51,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:59:51,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:51,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:59:51,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:59:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:59:51,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1719078015, now seen corresponding path program 1 times [2020-10-27 15:59:51,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:59:51,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942081193] [2020-10-27 15:59:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:59:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:56,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-27 15:59:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:59:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 15:59:56,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:59:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 15:59:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-27 15:59:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:59:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:57,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:57,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:59:57,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:59:57,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:59:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:59:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:57,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:59:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:57,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:57,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 15:59:57,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:57,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:59:57,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:59:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:59:57,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:57,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 15:59:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:57,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 15:59:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 15:59:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:59:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:59:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 16:00:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 16:00:02,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942081193] [2020-10-27 16:00:02,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:02,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:00:02,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502699895] [2020-10-27 16:00:02,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:00:02,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:02,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:00:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:00:02,065 INFO L87 Difference]: Start difference. First operand 7730 states and 11295 transitions. Second operand 5 states. [2020-10-27 16:00:02,562 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 16:00:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:00:15,223 INFO L93 Difference]: Finished difference Result 16197 states and 24152 transitions. [2020-10-27 16:00:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:00:15,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 829 [2020-10-27 16:00:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:00:15,262 INFO L225 Difference]: With dead ends: 16197 [2020-10-27 16:00:15,262 INFO L226 Difference]: Without dead ends: 6907 [2020-10-27 16:00:15,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:00:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6907 states. [2020-10-27 16:00:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6907 to 6892. [2020-10-27 16:00:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6892 states. [2020-10-27 16:00:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6892 states to 6892 states and 10093 transitions. [2020-10-27 16:00:15,531 INFO L78 Accepts]: Start accepts. Automaton has 6892 states and 10093 transitions. Word has length 829 [2020-10-27 16:00:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:00:15,532 INFO L481 AbstractCegarLoop]: Abstraction has 6892 states and 10093 transitions. [2020-10-27 16:00:15,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:00:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6892 states and 10093 transitions. [2020-10-27 16:00:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-27 16:00:15,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:15,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:15,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:00:15,564 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:15,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:15,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2118371588, now seen corresponding path program 1 times [2020-10-27 16:00:15,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:15,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774929305] [2020-10-27 16:00:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:20,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:20,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-27 16:00:20,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:00:20,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 16:00:20,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:00:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 16:00:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 16:00:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:21,068 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:00:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:21,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:21,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:21,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 16:00:21,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:00:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:21,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:21,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:00:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:00:21,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 16:00:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 16:00:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:21,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:21,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:21,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 16:00:21,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:21,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 16:00:21,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:00:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:00:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 16:00:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:00:22,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774929305] [2020-10-27 16:00:22,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:22,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:00:22,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566375958] [2020-10-27 16:00:22,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:00:22,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:22,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:00:22,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:00:22,055 INFO L87 Difference]: Start difference. First operand 6892 states and 10093 transitions. Second operand 7 states. [2020-10-27 16:00:30,518 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:00:41,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:00:41,939 INFO L93 Difference]: Finished difference Result 17481 states and 26388 transitions. [2020-10-27 16:00:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 16:00:41,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 860 [2020-10-27 16:00:41,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:00:41,994 INFO L225 Difference]: With dead ends: 17481 [2020-10-27 16:00:41,995 INFO L226 Difference]: Without dead ends: 10595 [2020-10-27 16:00:42,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:00:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10595 states. [2020-10-27 16:00:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10595 to 10524. [2020-10-27 16:00:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10524 states. [2020-10-27 16:00:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 13829 transitions. [2020-10-27 16:00:42,328 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 13829 transitions. Word has length 860 [2020-10-27 16:00:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:00:42,329 INFO L481 AbstractCegarLoop]: Abstraction has 10524 states and 13829 transitions. [2020-10-27 16:00:42,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:00:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 13829 transitions. [2020-10-27 16:00:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2020-10-27 16:00:42,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:42,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:42,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:00:42,371 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:42,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2045444109, now seen corresponding path program 1 times [2020-10-27 16:00:42,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:42,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162944102] [2020-10-27 16:00:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:42,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:47,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:47,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-27 16:00:47,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:00:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 16:00:47,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:00:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 16:00:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 775 [2020-10-27 16:00:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:48,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:00:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:00:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:48,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 16:00:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:00:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:48,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 16:00:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 16:00:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 16:00:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 16:00:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 16:00:52,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162944102] [2020-10-27 16:00:52,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:52,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:00:52,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804856626] [2020-10-27 16:00:52,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:00:52,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:52,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:00:52,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:00:52,571 INFO L87 Difference]: Start difference. First operand 10524 states and 13829 transitions. Second operand 5 states. [2020-10-27 16:00:53,448 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:01:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:04,088 INFO L93 Difference]: Finished difference Result 20977 states and 27378 transitions. [2020-10-27 16:01:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:01:04,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 883 [2020-10-27 16:01:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:04,126 INFO L225 Difference]: With dead ends: 20977 [2020-10-27 16:01:04,127 INFO L226 Difference]: Without dead ends: 10531 [2020-10-27 16:01:04,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:01:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10531 states. [2020-10-27 16:01:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10531 to 10524. [2020-10-27 16:01:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10524 states. [2020-10-27 16:01:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 13825 transitions. [2020-10-27 16:01:04,404 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 13825 transitions. Word has length 883 [2020-10-27 16:01:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:04,404 INFO L481 AbstractCegarLoop]: Abstraction has 10524 states and 13825 transitions. [2020-10-27 16:01:04,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:01:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 13825 transitions. [2020-10-27 16:01:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2020-10-27 16:01:04,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:04,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:04,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:01:04,449 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash 873570488, now seen corresponding path program 1 times [2020-10-27 16:01:04,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:04,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843693400] [2020-10-27 16:01:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:04,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:07,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-27 16:01:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:01:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 16:01:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:01:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 16:01:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-27 16:01:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:10,149 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:01:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:10,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:10,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:01:10,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:01:10,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 16:01:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 16:01:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:10,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:10,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 16:01:10,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 16:01:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 16:01:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 16:01:12,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843693400] [2020-10-27 16:01:12,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:01:12,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:01:12,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860798177] [2020-10-27 16:01:12,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:01:12,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:12,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:01:12,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:01:12,065 INFO L87 Difference]: Start difference. First operand 10524 states and 13825 transitions. Second operand 5 states. [2020-10-27 16:01:12,304 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:01:25,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:25,733 INFO L93 Difference]: Finished difference Result 29623 states and 39546 transitions. [2020-10-27 16:01:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:01:25,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 942 [2020-10-27 16:01:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:25,822 INFO L225 Difference]: With dead ends: 29623 [2020-10-27 16:01:25,822 INFO L226 Difference]: Without dead ends: 19935 [2020-10-27 16:01:25,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:01:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19935 states. [2020-10-27 16:01:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19935 to 17411. [2020-10-27 16:01:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17411 states. [2020-10-27 16:01:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17411 states to 17411 states and 22756 transitions. [2020-10-27 16:01:26,356 INFO L78 Accepts]: Start accepts. Automaton has 17411 states and 22756 transitions. Word has length 942 [2020-10-27 16:01:26,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:26,358 INFO L481 AbstractCegarLoop]: Abstraction has 17411 states and 22756 transitions. [2020-10-27 16:01:26,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:01:26,358 INFO L276 IsEmpty]: Start isEmpty. Operand 17411 states and 22756 transitions. [2020-10-27 16:01:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2020-10-27 16:01:26,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:26,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:26,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 16:01:26,436 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1047738890, now seen corresponding path program 1 times [2020-10-27 16:01:26,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:26,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068675416] [2020-10-27 16:01:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:31,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:31,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1452 [2020-10-27 16:01:31,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:01:31,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-27 16:01:31,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:31,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 16:01:31,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 16:01:31,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 587 [2020-10-27 16:01:31,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:32,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:32,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:32,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:01:32,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:32,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:32,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 16:01:32,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 16:01:32,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 16:01:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 16:01:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:37,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-27 16:01:37,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:01:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 16:01:37,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 16:01:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:01:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 591 [2020-10-27 16:01:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:37,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:01:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:38,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:38,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-27 16:01:38,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-27 16:01:38,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 16:01:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 362 [2020-10-27 16:01:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:01:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:39,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:39,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 16:01:39,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 16:01:39,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 16:01:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 16:01:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 667 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:01:44,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068675416] [2020-10-27 16:01:44,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:01:44,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 16:01:44,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492364192] [2020-10-27 16:01:44,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 16:01:44,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:44,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 16:01:44,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:01:44,542 INFO L87 Difference]: Start difference. First operand 17411 states and 22756 transitions. Second operand 11 states. [2020-10-27 16:01:45,194 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:01:45,626 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 16:01:46,732 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-10-27 16:01:48,543 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 16:01:51,620 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:01:52,252 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 16:01:53,640 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:01:58,625 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:02:00,182 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:02:02,010 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 16:02:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:02:18,334 INFO L93 Difference]: Finished difference Result 34942 states and 46352 transitions. [2020-10-27 16:02:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 16:02:18,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1428 [2020-10-27 16:02:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:02:18,394 INFO L225 Difference]: With dead ends: 34942 [2020-10-27 16:02:18,395 INFO L226 Difference]: Without dead ends: 18387 [2020-10-27 16:02:18,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-10-27 16:02:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18387 states. [2020-10-27 16:02:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18387 to 17461. [2020-10-27 16:02:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2020-10-27 16:02:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 22648 transitions. [2020-10-27 16:02:18,870 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 22648 transitions. Word has length 1428 [2020-10-27 16:02:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:02:18,872 INFO L481 AbstractCegarLoop]: Abstraction has 17461 states and 22648 transitions. [2020-10-27 16:02:18,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 16:02:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 22648 transitions. [2020-10-27 16:02:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2020-10-27 16:02:18,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:02:18,929 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:18,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 16:02:18,930 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:02:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:02:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash 527259775, now seen corresponding path program 1 times [2020-10-27 16:02:18,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:02:18,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382855199] [2020-10-27 16:02:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:02:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:19,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:19,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:24,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:24,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1487 [2020-10-27 16:02:24,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:02:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 16:02:24,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 16:02:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 16:02:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 587 [2020-10-27 16:02:24,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:24,545 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:02:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:02:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:24,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:24,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:02:24,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:02:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:02:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:24,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:24,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:02:24,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:02:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 16:02:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:24,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:24,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 16:02:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 16:02:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:02:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 16:02:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 16:02:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:26,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:26,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-27 16:02:26,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-27 16:02:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 16:02:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:02:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 591 [2020-10-27 16:02:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:02:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking...