/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/Problem06_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:26:41,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:26:41,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:26:41,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:26:41,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:26:41,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:26:41,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:26:41,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:26:41,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:26:41,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:26:41,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:26:41,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:26:41,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:26:41,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:26:41,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:26:41,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:26:41,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:26:41,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:26:41,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:26:41,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:26:41,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:26:41,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:26:41,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:26:41,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:26:41,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:26:41,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:26:41,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:26:41,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:26:41,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:26:41,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:26:41,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:26:41,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:26:41,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:26:41,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:26:41,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:26:41,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:26:41,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:26:41,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:26:41,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:26:41,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:26:41,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:26:41,886 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 16:26:41,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:26:41,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:26:41,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:26:41,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:26:41,929 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:26:41,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:26:41,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:26:41,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:26:41,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:26:41,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:26:41,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:26:41,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:26:41,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:26:41,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:26:41,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:26:41,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:26:41,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:26:41,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:26:41,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:26:41,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:26:41,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:26:41,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:26:41,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:26:41,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:26:41,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:26:41,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:26:41,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:26:41,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:26:41,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:26:41,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:26:42,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:26:42,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:26:42,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:26:42,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:26:42,345 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:26:42,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label15.c [2020-10-27 16:26:42,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/803ece62b/1ef335d3effe4f219bfcdbe7e920df4f/FLAG386a04bdd [2020-10-27 16:26:43,717 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:26:43,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label15.c [2020-10-27 16:26:43,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/803ece62b/1ef335d3effe4f219bfcdbe7e920df4f/FLAG386a04bdd [2020-10-27 16:26:43,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/803ece62b/1ef335d3effe4f219bfcdbe7e920df4f [2020-10-27 16:26:43,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:26:44,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:26:44,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:26:44,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:26:44,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:26:44,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:26:43" (1/1) ... [2020-10-27 16:26:44,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78262a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:44, skipping insertion in model container [2020-10-27 16:26:44,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:26:43" (1/1) ... [2020-10-27 16:26:44,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:26:44,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:26:46,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:26:46,271 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:26:47,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:26:47,402 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:26:47,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47 WrapperNode [2020-10-27 16:26:47,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:26:47,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:26:47,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:26:47,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:26:47,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (1/1) ... [2020-10-27 16:26:47,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (1/1) ... [2020-10-27 16:26:47,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (1/1) ... [2020-10-27 16:26:47,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (1/1) ... [2020-10-27 16:26:47,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (1/1) ... [2020-10-27 16:26:47,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (1/1) ... [2020-10-27 16:26:47,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (1/1) ... [2020-10-27 16:26:47,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:26:47,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:26:47,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:26:47,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:26:47,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (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 16:26:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:26:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:26:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:26:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:26:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:26:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:26:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:26:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:26:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:26:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:26:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:26:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:26:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:26:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:26:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:26:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:26:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:26:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:26:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:26:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:26:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:26:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:26:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:26:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:26:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:26:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:26:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:26:56,167 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:26:56,168 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:26:56,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:26:56 BoogieIcfgContainer [2020-10-27 16:26:56,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:26:56,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:26:56,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:26:56,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:26:56,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:26:43" (1/3) ... [2020-10-27 16:26:56,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@894810e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:26:56, skipping insertion in model container [2020-10-27 16:26:56,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:26:47" (2/3) ... [2020-10-27 16:26:56,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@894810e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:26:56, skipping insertion in model container [2020-10-27 16:26:56,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:26:56" (3/3) ... [2020-10-27 16:26:56,181 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label15.c [2020-10-27 16:26:56,193 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:26:56,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:26:56,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:26:56,246 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:26:56,246 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:26:56,246 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:26:56,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:26:56,246 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:26:56,247 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:26:56,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:26:56,247 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:26:56,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:26:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-27 16:26:56,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:26:56,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:56,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:26:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:26:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1013859436, now seen corresponding path program 1 times [2020-10-27 16:26:56,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:26:56,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440083933] [2020-10-27 16:26:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:26:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:26:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:26:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:02,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:02,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 979 [2020-10-27 16:27:02,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:27:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-27 16:27:02,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:27:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:27:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:27:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:27:05,998 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-27 16:27:06,419 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:27:06,775 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:27:07,095 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:27:07,362 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-27 16:27:07,639 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-27 16:27:07,911 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-27 16:27:08,165 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-27 16:27:08,392 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-27 16:27:08,618 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-27 16:27:08,837 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-27 16:27:08,991 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-27 16:27:09,285 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-27 16:27:09,659 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:27:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:27:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:27:09,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:27:09,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:27:09,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:27:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:27:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 16:27:09,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:27:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:27:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:27:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:27:09,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:27:22,380 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 16:27:22,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440083933] [2020-10-27 16:27:22,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:27:22,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:27:22,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223924647] [2020-10-27 16:27:22,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:27:22,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:27:22,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:27:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:27:22,408 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:27:22,957 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 16:27:23,952 WARN L193 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 196 [2020-10-27 16:27:24,980 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 196 [2020-10-27 16:27:26,056 WARN L193 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 204 [2020-10-27 16:27:30,463 WARN L193 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 203 [2020-10-27 16:27:34,475 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 215 DAG size of output: 202 [2020-10-27 16:27:37,387 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-10-27 16:27:38,451 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 199 [2020-10-27 16:27:39,773 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 198 [2020-10-27 16:27:50,104 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-10-27 16:27:51,133 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2020-10-27 16:27:54,448 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 195 [2020-10-27 16:28:02,442 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-27 16:28:03,468 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-10-27 16:28:06,325 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 192 [2020-10-27 16:28:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:28:19,415 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:28:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:28:19,419 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 961 [2020-10-27 16:28:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:28:19,475 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:28:19,476 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:28:19,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:28:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:28:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:28:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:28:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:28:19,686 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 961 [2020-10-27 16:28:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:28:19,689 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:28:19,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:28:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:28:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-10-27 16:28:19,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:28:19,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:28:19,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:28:19,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:28:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:28:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash 772385219, now seen corresponding path program 1 times [2020-10-27 16:28:19,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:28:19,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092918351] [2020-10-27 16:28:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:28:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:25,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:25,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1051 [2020-10-27 16:28:25,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:28:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5221 [2020-10-27 16:28:25,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:28:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:28:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 967 [2020-10-27 16:28:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:26,113 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:28:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:28:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:26,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:26,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:28:26,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:26,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:28:26,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:26,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:28:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:26,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:28:26,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 16:28:26,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:28:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:28:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:28:27,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092918351] [2020-10-27 16:28:27,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:28:27,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:28:27,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245524090] [2020-10-27 16:28:27,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:28:27,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:28:27,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:28:27,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:28:27,992 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 6 states. [2020-10-27 16:28:28,678 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:28:47,142 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:28:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:28:47,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1031 [2020-10-27 16:28:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:28:47,163 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:28:47,163 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:28:47,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:28:47,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:28:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:28:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:28:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:28:47,261 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1031 [2020-10-27 16:28:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:28:47,264 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:28:47,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:28:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:28:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-27 16:28:47,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:28:47,305 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:28:47,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:28:47,305 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:28:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:28:47,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1172534683, now seen corresponding path program 1 times [2020-10-27 16:28:47,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:28:47,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752717382] [2020-10-27 16:28:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:28:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:52,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:52,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-27 16:28:52,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:28:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-27 16:28:52,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:28:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:28:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:53,078 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:28:53,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:28:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:53,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:53,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:28:53,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 16:28:53,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:28:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:28:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:28:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:53,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:53,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:53,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:28:53,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:53,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 16:28:53,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:53,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:28:53,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:28:53,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:28:53,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:53,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:28:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:28:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:28:53,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:28:53,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:28:53,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:28:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 16:28:53,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:28:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:28:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:28:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:28:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:28:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:28:54,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752717382] [2020-10-27 16:28:54,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:28:54,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:28:54,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790473654] [2020-10-27 16:28:54,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:28:54,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:28:54,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:28:54,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:28:54,070 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 7 states. [2020-10-27 16:28:54,709 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:28:55,767 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:29:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:29:27,327 INFO L93 Difference]: Finished difference Result 9821 states and 15807 transitions. [2020-10-27 16:29:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:29:27,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1040 [2020-10-27 16:29:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:29:27,369 INFO L225 Difference]: With dead ends: 9821 [2020-10-27 16:29:27,369 INFO L226 Difference]: Without dead ends: 7493 [2020-10-27 16:29:27,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:29:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2020-10-27 16:29:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7435. [2020-10-27 16:29:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2020-10-27 16:29:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 10376 transitions. [2020-10-27 16:29:27,599 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 10376 transitions. Word has length 1040 [2020-10-27 16:29:27,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:29:27,599 INFO L481 AbstractCegarLoop]: Abstraction has 7435 states and 10376 transitions. [2020-10-27 16:29:27,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:29:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 10376 transitions. [2020-10-27 16:29:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2020-10-27 16:29:27,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:29:27,628 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:29:27,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:29:27,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:29:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:29:27,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1391261085, now seen corresponding path program 1 times [2020-10-27 16:29:27,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:29:27,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892976587] [2020-10-27 16:29:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:29:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:27,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:33,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:33,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1066 [2020-10-27 16:29:33,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:29:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5247 [2020-10-27 16:29:33,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:29:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:29:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:29:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:33,561 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:29:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:29:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:33,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:33,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:29:33,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:29:33,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:29:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:33,689 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:29:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:29:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:33,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:33,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:29:33,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 16:29:33,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:29:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:29:33,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:29:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:33,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:33,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:29:33,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 16:29:33,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:29:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:29:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:29:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:29:34,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892976587] [2020-10-27 16:29:34,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:29:34,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:29:34,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771280026] [2020-10-27 16:29:34,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:29:34,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:29:34,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:29:34,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:29:34,720 INFO L87 Difference]: Start difference. First operand 7435 states and 10376 transitions. Second operand 8 states. [2020-10-27 16:29:35,450 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:29:36,299 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 16:29:37,434 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 16:30:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:30:10,030 INFO L93 Difference]: Finished difference Result 24296 states and 35706 transitions. [2020-10-27 16:30:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 16:30:10,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1044 [2020-10-27 16:30:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:30:10,118 INFO L225 Difference]: With dead ends: 24296 [2020-10-27 16:30:10,118 INFO L226 Difference]: Without dead ends: 17621 [2020-10-27 16:30:10,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 16:30:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17621 states. [2020-10-27 16:30:10,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17621 to 17497. [2020-10-27 16:30:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17497 states. [2020-10-27 16:30:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17497 states to 17497 states and 24246 transitions. [2020-10-27 16:30:10,691 INFO L78 Accepts]: Start accepts. Automaton has 17497 states and 24246 transitions. Word has length 1044 [2020-10-27 16:30:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:30:10,692 INFO L481 AbstractCegarLoop]: Abstraction has 17497 states and 24246 transitions. [2020-10-27 16:30:10,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:30:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17497 states and 24246 transitions. [2020-10-27 16:30:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-27 16:30:10,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:30:10,760 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:10,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:30:10,762 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:30:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:30:10,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1554038002, now seen corresponding path program 1 times [2020-10-27 16:30:10,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:30:10,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924042305] [2020-10-27 16:30:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:30:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:12,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:15,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:15,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-27 16:30:15,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:30:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 16:30:15,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:30:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 16:30:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 968 [2020-10-27 16:30:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:16,796 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:30:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:30:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:30:16,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:30:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:30:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:30:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:30:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:16,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:16,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:30:16,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 16:30:16,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:30:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:30:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:16,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:30:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:30:16,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 16:30:16,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:30:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:30:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 16:30:18,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924042305] [2020-10-27 16:30:18,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:30:18,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:30:18,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342005065] [2020-10-27 16:30:18,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:30:18,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:30:18,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:30:18,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:30:18,098 INFO L87 Difference]: Start difference. First operand 17497 states and 24246 transitions. Second operand 5 states. [2020-10-27 16:30:18,769 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159