/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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:55:00,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:55:00,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:55:00,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:55:00,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:55:00,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:55:00,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:55:00,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:55:00,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:55:00,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:55:00,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:55:00,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:55:00,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:55:00,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:55:00,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:55:00,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:55:00,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:55:00,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:55:00,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:55:00,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:55:00,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:55:00,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:55:00,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:55:00,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:55:00,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:55:00,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:55:00,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:55:00,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:55:00,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:55:00,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:55:00,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:55:00,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:55:00,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:55:00,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:55:00,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:55:00,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:55:00,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:55:00,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:55:00,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:55:00,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:55:00,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:55:00,773 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 15:55:00,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:55:00,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:55:00,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:55:00,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:55:00,835 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:55:00,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:55:00,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:55:00,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:55:00,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:55:00,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:55:00,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:55:00,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:55:00,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:55:00,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:55:00,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:55:00,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:55:00,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:55:00,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:55:00,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:55:00,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:55:00,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:55:00,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:55:00,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:55:00,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:55:00,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:55:00,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:55:00,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:55:00,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:55:00,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:55:00,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:55:01,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:55:01,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:55:01,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:55:01,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:55:01,338 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:55:01,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label15.c [2020-10-27 15:55:01,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71f99ce85/1e591d04604f4021a5c4358263ba84fd/FLAGd4f40c472 [2020-10-27 15:55:02,453 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:55:02,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label15.c [2020-10-27 15:55:02,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71f99ce85/1e591d04604f4021a5c4358263ba84fd/FLAGd4f40c472 [2020-10-27 15:55:02,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71f99ce85/1e591d04604f4021a5c4358263ba84fd [2020-10-27 15:55:02,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:55:02,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:55:02,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:55:02,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:55:02,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:55:02,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:55:02" (1/1) ... [2020-10-27 15:55:02,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6184acf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:02, skipping insertion in model container [2020-10-27 15:55:02,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:55:02" (1/1) ... [2020-10-27 15:55:02,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:55:03,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:55:04,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:55:04,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:55:05,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:55:05,342 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:55:05,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05 WrapperNode [2020-10-27 15:55:05,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:55:05,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:55:05,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:55:05,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:55:05,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (1/1) ... [2020-10-27 15:55:05,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (1/1) ... [2020-10-27 15:55:05,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (1/1) ... [2020-10-27 15:55:05,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (1/1) ... [2020-10-27 15:55:05,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (1/1) ... [2020-10-27 15:55:05,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (1/1) ... [2020-10-27 15:55:05,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (1/1) ... [2020-10-27 15:55:05,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:55:05,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:55:05,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:55:05,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:55:05,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (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 15:55:05,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:55:05,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:55:05,806 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:55:05,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:55:05,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 15:55:05,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 15:55:05,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 15:55:05,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:55:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:55:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 15:55:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 15:55:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 15:55:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:55:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:55:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:55:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:55:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:55:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:55:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:55:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:55:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:55:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:55:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:55:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:55:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:55:11,249 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:55:11,250 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:55:11,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:55:11 BoogieIcfgContainer [2020-10-27 15:55:11,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:55:11,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:55:11,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:55:11,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:55:11,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:55:02" (1/3) ... [2020-10-27 15:55:11,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90ccc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:55:11, skipping insertion in model container [2020-10-27 15:55:11,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:55:05" (2/3) ... [2020-10-27 15:55:11,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90ccc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:55:11, skipping insertion in model container [2020-10-27 15:55:11,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:55:11" (3/3) ... [2020-10-27 15:55:11,264 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label15.c [2020-10-27 15:55:11,276 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:55:11,282 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:55:11,296 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:55:11,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:55:11,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:55:11,332 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:55:11,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:55:11,332 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:55:11,332 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:55:11,332 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:55:11,332 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:55:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 15:55:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2020-10-27 15:55:11,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:11,428 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] [2020-10-27 15:55:11,428 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:11,442 INFO L82 PathProgramCache]: Analyzing trace with hash -222829388, now seen corresponding path program 1 times [2020-10-27 15:55:11,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161365079] [2020-10-27 15:55:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:17,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 808 [2020-10-27 15:55:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:55:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-27 15:55:17,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:55:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:55:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 799 [2020-10-27 15:55:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:55:18,314 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:55:18,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:18,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:55:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:55:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:19,259 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 15:55:19,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161365079] [2020-10-27 15:55:19,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:55:19,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:55:19,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490454486] [2020-10-27 15:55:19,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:55:19,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:55:19,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:55:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:55:19,289 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-27 15:55:19,474 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:55:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:55:31,528 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-27 15:55:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:55:31,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 792 [2020-10-27 15:55:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:55:31,598 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 15:55:31,598 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 15:55:31,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:55:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 15:55:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-27 15:55:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-27 15:55:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3016 transitions. [2020-10-27 15:55:31,803 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3016 transitions. Word has length 792 [2020-10-27 15:55:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:55:31,806 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 3016 transitions. [2020-10-27 15:55:31,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:55:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3016 transitions. [2020-10-27 15:55:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-27 15:55:31,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:31,839 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:55:31,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:55:31,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:31,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1175507355, now seen corresponding path program 1 times [2020-10-27 15:55:31,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:31,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131068687] [2020-10-27 15:55:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:37,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-27 15:55:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:55:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 15:55:37,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:55:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:55:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-27 15:55:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:37,636 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:55:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:37,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:37,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:55:37,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:55:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:55:37,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 15:55:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:55:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:37,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:37,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:37,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 15:55:37,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 15:55:37,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 15:55:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:55:38,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131068687] [2020-10-27 15:55:38,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:55:38,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:55:38,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455480642] [2020-10-27 15:55:38,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:55:38,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:55:38,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:55:38,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:55:38,419 INFO L87 Difference]: Start difference. First operand 1688 states and 3016 transitions. Second operand 5 states. [2020-10-27 15:55:38,574 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:55:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:55:49,536 INFO L93 Difference]: Finished difference Result 5075 states and 9133 transitions. [2020-10-27 15:55:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:55:49,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 811 [2020-10-27 15:55:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:55:49,561 INFO L225 Difference]: With dead ends: 5075 [2020-10-27 15:55:49,562 INFO L226 Difference]: Without dead ends: 3393 [2020-10-27 15:55:49,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 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 15:55:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-27 15:55:49,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3378. [2020-10-27 15:55:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3378 states. [2020-10-27 15:55:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 5691 transitions. [2020-10-27 15:55:49,679 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 5691 transitions. Word has length 811 [2020-10-27 15:55:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:55:49,681 INFO L481 AbstractCegarLoop]: Abstraction has 3378 states and 5691 transitions. [2020-10-27 15:55:49,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:55:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 5691 transitions. [2020-10-27 15:55:49,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-27 15:55:49,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:49,698 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:55:49,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:55:49,698 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:49,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:49,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1234453505, now seen corresponding path program 1 times [2020-10-27 15:55:49,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:49,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212605477] [2020-10-27 15:55:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:51,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:51,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-27 15:55:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1415 [2020-10-27 15:55:51,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:55:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:55:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:55:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:51,406 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:55:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:51,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:51,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:51,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:51,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:55:51,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:55:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:55:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:51,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:51,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:51,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:55:51,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 15:55:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:55:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:55:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:55:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:55:51,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212605477] [2020-10-27 15:55:51,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:55:51,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 15:55:51,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373389431] [2020-10-27 15:55:51,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:55:51,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:55:51,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:55:51,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:55:51,831 INFO L87 Difference]: Start difference. First operand 3378 states and 5691 transitions. Second operand 7 states. [2020-10-27 15:55:51,972 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:55:54,894 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:56:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:05,106 INFO L93 Difference]: Finished difference Result 10291 states and 17614 transitions. [2020-10-27 15:56:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:56:05,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 813 [2020-10-27 15:56:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:05,156 INFO L225 Difference]: With dead ends: 10291 [2020-10-27 15:56:05,157 INFO L226 Difference]: Without dead ends: 6919 [2020-10-27 15:56:05,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:56:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2020-10-27 15:56:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6855. [2020-10-27 15:56:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6855 states. [2020-10-27 15:56:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6855 states to 6855 states and 10282 transitions. [2020-10-27 15:56:05,424 INFO L78 Accepts]: Start accepts. Automaton has 6855 states and 10282 transitions. Word has length 813 [2020-10-27 15:56:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:05,424 INFO L481 AbstractCegarLoop]: Abstraction has 6855 states and 10282 transitions. [2020-10-27 15:56:05,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:56:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 6855 states and 10282 transitions. [2020-10-27 15:56:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-27 15:56:05,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:05,484 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:05,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:56:05,485 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2049913421, now seen corresponding path program 1 times [2020-10-27 15:56:05,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:05,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344048582] [2020-10-27 15:56:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:05,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:10,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:10,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-27 15:56:10,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:56:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 15:56:10,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:56:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 15:56:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 15:56:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:11,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:11,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:11,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:56:11,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:11,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 15:56:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:56:11,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:11,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 15:56:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:56:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:11,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 15:56:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 15:56:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 15:56:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:11,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:11,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:56:11,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:11,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 15:56:11,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:56:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:56:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:56:11,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 15:56:11,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344048582] [2020-10-27 15:56:11,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:11,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:56:11,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471788524] [2020-10-27 15:56:11,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:56:11,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:56:11,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:56:11,945 INFO L87 Difference]: Start difference. First operand 6855 states and 10282 transitions. Second operand 8 states. [2020-10-27 15:56:12,165 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:56:12,457 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 15:56:12,706 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 15:56:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:56:37,727 INFO L93 Difference]: Finished difference Result 19995 states and 31131 transitions. [2020-10-27 15:56:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 15:56:37,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 901 [2020-10-27 15:56:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:56:37,808 INFO L225 Difference]: With dead ends: 19995 [2020-10-27 15:56:37,808 INFO L226 Difference]: Without dead ends: 13146 [2020-10-27 15:56:37,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:56:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13146 states. [2020-10-27 15:56:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13146 to 13114. [2020-10-27 15:56:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13114 states. [2020-10-27 15:56:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 18482 transitions. [2020-10-27 15:56:38,221 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 18482 transitions. Word has length 901 [2020-10-27 15:56:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:56:38,222 INFO L481 AbstractCegarLoop]: Abstraction has 13114 states and 18482 transitions. [2020-10-27 15:56:38,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:56:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 18482 transitions. [2020-10-27 15:56:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-27 15:56:38,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:56:38,282 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:56:38,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:56:38,282 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:56:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:56:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1369524333, now seen corresponding path program 1 times [2020-10-27 15:56:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:56:38,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107584397] [2020-10-27 15:56:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:56:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:38,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:43,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:43,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 921 [2020-10-27 15:56:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:56:43,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 15:56:43,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:43,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:56:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 15:56:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 568 [2020-10-27 15:56:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:56:45,994 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 15:56:46,133 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 15:56:46,278 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 15:56:46,460 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-27 15:56:46,661 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-27 15:56:46,841 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-27 15:56:47,014 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-27 15:56:47,208 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-27 15:56:47,407 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-10-27 15:56:47,587 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-27 15:56:47,771 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-10-27 15:56:48,002 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 40 [2020-10-27 15:56:48,228 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:56:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:56:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:48,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:48,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:56:48,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:56:48,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:56:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:56:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:56:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:56:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:56:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:56:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 15:56:48,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:56:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 15:56:48,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:56:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:56:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:56:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 15:56:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:56:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:56:55,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107584397] [2020-10-27 15:56:55,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:56:55,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:56:55,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097751018] [2020-10-27 15:56:55,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:56:55,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:56:55,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:56:55,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:56:55,129 INFO L87 Difference]: Start difference. First operand 13114 states and 18482 transitions. Second operand 17 states. [2020-10-27 15:56:56,112 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 15:56:56,446 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 15:56:57,511 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 15:56:58,282 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 15:57:01,859 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 15:57:02,551 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 15:57:02,816 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-27 15:57:05,718 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 15:57:06,514 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2020-10-27 15:57:08,483 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 15:57:08,723 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 15:57:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:57:13,001 INFO L93 Difference]: Finished difference Result 26805 states and 37782 transitions. [2020-10-27 15:57:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:57:13,002 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 903 [2020-10-27 15:57:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:57:13,071 INFO L225 Difference]: With dead ends: 26805 [2020-10-27 15:57:13,071 INFO L226 Difference]: Without dead ends: 13701 [2020-10-27 15:57:13,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:57:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13701 states. [2020-10-27 15:57:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13701 to 13681. [2020-10-27 15:57:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13681 states. [2020-10-27 15:57:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13681 states to 13681 states and 19075 transitions. [2020-10-27 15:57:13,496 INFO L78 Accepts]: Start accepts. Automaton has 13681 states and 19075 transitions. Word has length 903 [2020-10-27 15:57:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:57:13,497 INFO L481 AbstractCegarLoop]: Abstraction has 13681 states and 19075 transitions. [2020-10-27 15:57:13,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:57:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 13681 states and 19075 transitions. [2020-10-27 15:57:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-10-27 15:57:13,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:57:13,554 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:57:13,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:57:13,554 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:57:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:57:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1170374953, now seen corresponding path program 1 times [2020-10-27 15:57:13,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:57:13,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539243764] [2020-10-27 15:57:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:57:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:18,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-10-27 15:57:18,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:57:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 15:57:18,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:57:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 15:57:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 495 [2020-10-27 15:57:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:20,205 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-27 15:57:20,367 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-27 15:57:20,507 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-27 15:57:20,671 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-27 15:57:20,843 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-27 15:57:21,088 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2020-10-27 15:57:21,334 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2020-10-27 15:57:21,583 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 43 [2020-10-27 15:57:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:57:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:21,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:21,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:57:21,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:57:21,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:21,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:57:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:21,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:21,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:21,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 15:57:21,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:57:21,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 15:57:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:22,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 15:57:22,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 15:57:22,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:57:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 15:57:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-27 15:57:27,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539243764] [2020-10-27 15:57:27,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:57:27,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:57:27,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701158448] [2020-10-27 15:57:27,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:57:27,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:57:27,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:57:27,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:57:27,827 INFO L87 Difference]: Start difference. First operand 13681 states and 19075 transitions. Second operand 17 states. [2020-10-27 15:57:28,970 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 15:57:29,257 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-27 15:57:31,655 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 15:57:34,385 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 15:57:34,656 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 15:57:35,533 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 130 [2020-10-27 15:57:36,192 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2020-10-27 15:57:40,509 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 128 [2020-10-27 15:57:41,118 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 121 [2020-10-27 15:57:41,650 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 15:57:41,844 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 15:57:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:57:44,947 INFO L93 Difference]: Finished difference Result 27860 states and 38858 transitions. [2020-10-27 15:57:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:57:44,949 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 925 [2020-10-27 15:57:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:57:45,016 INFO L225 Difference]: With dead ends: 27860 [2020-10-27 15:57:45,016 INFO L226 Difference]: Without dead ends: 14189 [2020-10-27 15:57:45,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:57:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14189 states. [2020-10-27 15:57:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14189 to 14173. [2020-10-27 15:57:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14173 states. [2020-10-27 15:57:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14173 states to 14173 states and 19584 transitions. [2020-10-27 15:57:45,469 INFO L78 Accepts]: Start accepts. Automaton has 14173 states and 19584 transitions. Word has length 925 [2020-10-27 15:57:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:57:45,471 INFO L481 AbstractCegarLoop]: Abstraction has 14173 states and 19584 transitions. [2020-10-27 15:57:45,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:57:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 14173 states and 19584 transitions. [2020-10-27 15:57:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2020-10-27 15:57:45,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:57:45,548 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 15:57:45,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:57:45,549 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:57:45,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:57:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1643486221, now seen corresponding path program 1 times [2020-10-27 15:57:45,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:57:45,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195049930] [2020-10-27 15:57:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:57:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:45,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:50,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:50,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 955 [2020-10-27 15:57:50,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:57:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-27 15:57:50,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:57:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 15:57:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 568 [2020-10-27 15:57:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:52,228 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:57:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:57:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:52,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:52,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:57:52,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:52,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:57:52,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:57:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 15:57:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:57:52,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:57:52,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:57:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:57:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 15:57:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:57:52,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:57:52,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:57:52,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 15:57:52,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:57:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 15:57:52,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:57:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:57:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:57:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 15:57:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:57:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 15:57:57,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195049930] [2020-10-27 15:57:57,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:57:57,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:57:57,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272772783] [2020-10-27 15:57:57,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:57:57,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:57:57,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:57:57,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:57:57,149 INFO L87 Difference]: Start difference. First operand 14173 states and 19584 transitions. Second operand 17 states. [2020-10-27 15:57:58,664 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 15:57:58,908 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 15:58:00,159 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 15:58:00,984 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 15:58:04,889 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 15:58:05,535 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 15:58:05,760 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 15:58:09,155 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 15:58:09,791 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 15:58:12,110 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 15:58:12,317 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 15:58:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:58:17,354 INFO L93 Difference]: Finished difference Result 28935 states and 40020 transitions. [2020-10-27 15:58:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 15:58:17,355 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 933 [2020-10-27 15:58:17,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:58:17,405 INFO L225 Difference]: With dead ends: 28935 [2020-10-27 15:58:17,406 INFO L226 Difference]: Without dead ends: 14772 [2020-10-27 15:58:17,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:58:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14772 states. [2020-10-27 15:58:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14772 to 14238. [2020-10-27 15:58:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14238 states. [2020-10-27 15:58:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14238 states to 14238 states and 19686 transitions. [2020-10-27 15:58:17,833 INFO L78 Accepts]: Start accepts. Automaton has 14238 states and 19686 transitions. Word has length 933 [2020-10-27 15:58:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:58:17,835 INFO L481 AbstractCegarLoop]: Abstraction has 14238 states and 19686 transitions. [2020-10-27 15:58:17,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:58:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 14238 states and 19686 transitions. [2020-10-27 15:58:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2020-10-27 15:58:17,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:58:17,878 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:58:17,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:58:17,879 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:58:17,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:58:17,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1517559039, now seen corresponding path program 1 times [2020-10-27 15:58:17,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:58:17,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181447850] [2020-10-27 15:58:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:58:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:23,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 961 [2020-10-27 15:58:23,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:58:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-27 15:58:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:58:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-27 15:58:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-27 15:58:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:23,616 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:58:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:58:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:23,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:23,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:58:23,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:58:23,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:58:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 15:58:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 15:58:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:23,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-27 15:58:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:23,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:23,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:58:23,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:58:23,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:58:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:58:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:58:24,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181447850] [2020-10-27 15:58:24,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:58:24,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:58:24,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340818962] [2020-10-27 15:58:24,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:58:24,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:58:24,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:58:24,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:58:24,629 INFO L87 Difference]: Start difference. First operand 14238 states and 19686 transitions. Second operand 5 states. [2020-10-27 15:58:24,767 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:58:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:58:36,413 INFO L93 Difference]: Finished difference Result 40434 states and 57949 transitions. [2020-10-27 15:58:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:58:36,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 941 [2020-10-27 15:58:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:58:36,499 INFO L225 Difference]: With dead ends: 40434 [2020-10-27 15:58:36,499 INFO L226 Difference]: Without dead ends: 26206 [2020-10-27 15:58:36,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 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 15:58:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26206 states. [2020-10-27 15:58:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26206 to 26198. [2020-10-27 15:58:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26198 states. [2020-10-27 15:58:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26198 states to 26198 states and 34689 transitions. [2020-10-27 15:58:37,325 INFO L78 Accepts]: Start accepts. Automaton has 26198 states and 34689 transitions. Word has length 941 [2020-10-27 15:58:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:58:37,326 INFO L481 AbstractCegarLoop]: Abstraction has 26198 states and 34689 transitions. [2020-10-27 15:58:37,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:58:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 26198 states and 34689 transitions. [2020-10-27 15:58:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-27 15:58:37,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:58:37,398 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:37,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:58:37,399 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:58:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:58:37,400 INFO L82 PathProgramCache]: Analyzing trace with hash -867441320, now seen corresponding path program 1 times [2020-10-27 15:58:37,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:58:37,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593541180] [2020-10-27 15:58:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:58:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:42,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:42,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1006 [2020-10-27 15:58:42,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:58:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 15:58:42,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:58:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-27 15:58:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:58:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0