/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:38:18,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:38:18,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:38:18,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:38:18,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:38:18,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:38:18,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:38:18,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:38:18,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:38:18,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:38:18,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:38:18,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:38:18,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:38:18,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:38:18,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:38:18,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:38:18,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:38:18,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:38:18,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:38:18,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:38:18,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:38:18,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:38:18,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:38:18,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:38:18,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:38:18,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:38:18,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:38:18,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:38:18,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:38:18,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:38:18,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:38:18,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:38:18,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:38:18,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:38:18,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:38:18,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:38:18,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:38:18,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:38:18,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:38:18,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:38:18,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:38:18,791 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 [2020-10-26 22:38:18,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:38:18,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:38:18,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:38:18,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:38:18,832 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:38:18,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:38:18,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:38:18,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:38:18,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:38:18,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:38:18,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:38:18,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:38:18,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:38:18,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:38:18,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:38:18,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:38:18,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:38:18,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:38:18,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:38:18,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:38:18,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:38:18,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:38:18,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:38:18,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:38:18,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:38:18,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:38:18,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:38:18,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:38:18,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:38:18,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:38:19,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:38:19,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:38:19,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:38:19,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:38:19,396 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:38:19,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2020-10-26 22:38:19,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b8669e8c/555fb59fd65b4aa7b1e0077932a5532c/FLAGd78f9bf3f [2020-10-26 22:38:20,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:38:20,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2020-10-26 22:38:20,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b8669e8c/555fb59fd65b4aa7b1e0077932a5532c/FLAGd78f9bf3f [2020-10-26 22:38:20,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b8669e8c/555fb59fd65b4aa7b1e0077932a5532c [2020-10-26 22:38:20,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:38:20,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:38:20,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:38:20,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:38:20,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:38:20,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:20" (1/1) ... [2020-10-26 22:38:20,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e92f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:20, skipping insertion in model container [2020-10-26 22:38:20,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:20" (1/1) ... [2020-10-26 22:38:20,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:38:20,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:38:21,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:38:21,295 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:38:21,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:38:21,457 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:38:21,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21 WrapperNode [2020-10-26 22:38:21,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:38:21,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:38:21,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:38:21,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:38:21,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (1/1) ... [2020-10-26 22:38:21,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (1/1) ... [2020-10-26 22:38:21,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (1/1) ... [2020-10-26 22:38:21,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (1/1) ... [2020-10-26 22:38:21,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (1/1) ... [2020-10-26 22:38:21,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (1/1) ... [2020-10-26 22:38:21,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (1/1) ... [2020-10-26 22:38:21,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:38:21,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:38:21,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:38:21,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:38:21,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (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 [2020-10-26 22:38:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:38:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:38:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:38:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:38:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:38:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:38:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:38:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:38:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:38:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:38:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:38:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:38:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:38:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:38:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:38:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:38:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:38:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:38:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:38:23,983 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:38:23,984 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:38:23,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:23 BoogieIcfgContainer [2020-10-26 22:38:23,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:38:23,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:38:23,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:38:23,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:38:23,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:38:20" (1/3) ... [2020-10-26 22:38:23,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1804675c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:23, skipping insertion in model container [2020-10-26 22:38:23,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:21" (2/3) ... [2020-10-26 22:38:23,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1804675c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:23, skipping insertion in model container [2020-10-26 22:38:23,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:23" (3/3) ... [2020-10-26 22:38:23,997 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2020-10-26 22:38:24,013 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:38:24,020 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:38:24,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:38:24,071 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:38:24,071 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:38:24,071 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:38:24,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:38:24,072 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:38:24,072 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:38:24,072 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:38:24,072 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:38:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:38:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-26 22:38:24,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:24,108 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] [2020-10-26 22:38:24,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:24,116 INFO L82 PathProgramCache]: Analyzing trace with hash 802347576, now seen corresponding path program 1 times [2020-10-26 22:38:24,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:24,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206114599] [2020-10-26 22:38:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:24,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:24,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-26 22:38:24,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-26 22:38:24,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 22:38:24,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:38:25,212 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:38:25,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:25,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:25,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:25,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:38:25,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:25,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206114599] [2020-10-26 22:38:25,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:25,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:38:25,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037869020] [2020-10-26 22:38:25,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:38:25,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:25,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:38:25,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:38:25,340 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:38:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:28,711 INFO L93 Difference]: Finished difference Result 811 states and 1410 transitions. [2020-10-26 22:38:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:38:28,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-26 22:38:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:28,732 INFO L225 Difference]: With dead ends: 811 [2020-10-26 22:38:28,732 INFO L226 Difference]: Without dead ends: 435 [2020-10-26 22:38:28,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:38:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-26 22:38:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2020-10-26 22:38:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-26 22:38:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 618 transitions. [2020-10-26 22:38:28,831 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 618 transitions. Word has length 38 [2020-10-26 22:38:28,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:28,831 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 618 transitions. [2020-10-26 22:38:28,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:38:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 618 transitions. [2020-10-26 22:38:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 22:38:28,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:28,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:28,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:38:28,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1473748108, now seen corresponding path program 1 times [2020-10-26 22:38:28,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:28,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712659911] [2020-10-26 22:38:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:29,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:30,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:30,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:38:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-26 22:38:30,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:38:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:38:30,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:30,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:30,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:30,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:38:30,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:30,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:38:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:31,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:31,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:38:31,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 22:38:31,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:38:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:31,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712659911] [2020-10-26 22:38:31,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:31,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:38:31,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858577604] [2020-10-26 22:38:31,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:31,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:31,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:31,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:31,178 INFO L87 Difference]: Start difference. First operand 429 states and 618 transitions. Second operand 7 states. [2020-10-26 22:38:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:34,574 INFO L93 Difference]: Finished difference Result 1278 states and 1890 transitions. [2020-10-26 22:38:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:38:34,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-26 22:38:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:34,584 INFO L225 Difference]: With dead ends: 1278 [2020-10-26 22:38:34,585 INFO L226 Difference]: Without dead ends: 855 [2020-10-26 22:38:34,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:38:34,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-26 22:38:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 820. [2020-10-26 22:38:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-26 22:38:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1135 transitions. [2020-10-26 22:38:34,694 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1135 transitions. Word has length 110 [2020-10-26 22:38:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:34,694 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 1135 transitions. [2020-10-26 22:38:34,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1135 transitions. [2020-10-26 22:38:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 22:38:34,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:34,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:34,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:38:34,698 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:34,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1945044, now seen corresponding path program 1 times [2020-10-26 22:38:34,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:34,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449090384] [2020-10-26 22:38:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:34,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:36,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:36,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 22:38:36,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:36,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1372 [2020-10-26 22:38:36,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:36,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:36,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:38:36,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:36,276 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:38:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:36,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:36,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:36,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:38:36,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:36,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:36,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:38:36,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 22:38:36,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:38:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:36,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449090384] [2020-10-26 22:38:36,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:36,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:38:36,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578823039] [2020-10-26 22:38:36,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:36,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:36,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:36,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:36,663 INFO L87 Difference]: Start difference. First operand 820 states and 1135 transitions. Second operand 7 states. [2020-10-26 22:38:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:40,335 INFO L93 Difference]: Finished difference Result 2252 states and 3145 transitions. [2020-10-26 22:38:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:38:40,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-26 22:38:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:40,346 INFO L225 Difference]: With dead ends: 2252 [2020-10-26 22:38:40,346 INFO L226 Difference]: Without dead ends: 1438 [2020-10-26 22:38:40,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:38:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-10-26 22:38:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1413. [2020-10-26 22:38:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-10-26 22:38:40,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1785 transitions. [2020-10-26 22:38:40,418 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1785 transitions. Word has length 111 [2020-10-26 22:38:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:40,419 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 1785 transitions. [2020-10-26 22:38:40,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1785 transitions. [2020-10-26 22:38:40,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-26 22:38:40,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:40,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:40,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:38:40,423 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash 533739150, now seen corresponding path program 1 times [2020-10-26 22:38:40,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:40,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190096882] [2020-10-26 22:38:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:40,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:40,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:41,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:41,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 22:38:41,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-26 22:38:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:38:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 22:38:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:38:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:41,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 22:38:41,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:41,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:41,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:41,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:38:41,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-26 22:38:41,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:38:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:38:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190096882] [2020-10-26 22:38:42,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:42,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:38:42,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290724294] [2020-10-26 22:38:42,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:38:42,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:42,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:38:42,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:38:42,012 INFO L87 Difference]: Start difference. First operand 1413 states and 1785 transitions. Second operand 6 states. [2020-10-26 22:38:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:45,155 INFO L93 Difference]: Finished difference Result 3249 states and 4268 transitions. [2020-10-26 22:38:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:38:45,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2020-10-26 22:38:45,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:45,168 INFO L225 Difference]: With dead ends: 3249 [2020-10-26 22:38:45,168 INFO L226 Difference]: Without dead ends: 2030 [2020-10-26 22:38:45,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:38:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2020-10-26 22:38:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1815. [2020-10-26 22:38:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2020-10-26 22:38:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2295 transitions. [2020-10-26 22:38:45,241 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2295 transitions. Word has length 154 [2020-10-26 22:38:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:45,242 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2295 transitions. [2020-10-26 22:38:45,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:38:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2295 transitions. [2020-10-26 22:38:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-26 22:38:45,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:45,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:45,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:38:45,246 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:45,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1299721451, now seen corresponding path program 1 times [2020-10-26 22:38:45,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:45,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494085216] [2020-10-26 22:38:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:45,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:45,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-26 22:38:45,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-26 22:38:45,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:38:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 22:38:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:45,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:45,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:45,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:45,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:38:45,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:45,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:45,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:46,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:46,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:38:46,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 22:38:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:38:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:46,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494085216] [2020-10-26 22:38:46,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:46,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:38:46,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642877879] [2020-10-26 22:38:46,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:38:46,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:46,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:38:46,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:38:46,093 INFO L87 Difference]: Start difference. First operand 1815 states and 2295 transitions. Second operand 5 states. [2020-10-26 22:38:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:48,870 INFO L93 Difference]: Finished difference Result 4037 states and 5305 transitions. [2020-10-26 22:38:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:38:48,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-26 22:38:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:48,888 INFO L225 Difference]: With dead ends: 4037 [2020-10-26 22:38:48,888 INFO L226 Difference]: Without dead ends: 2606 [2020-10-26 22:38:48,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:38:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2020-10-26 22:38:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2586. [2020-10-26 22:38:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2020-10-26 22:38:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3227 transitions. [2020-10-26 22:38:49,000 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3227 transitions. Word has length 169 [2020-10-26 22:38:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:49,001 INFO L481 AbstractCegarLoop]: Abstraction has 2586 states and 3227 transitions. [2020-10-26 22:38:49,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:38:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3227 transitions. [2020-10-26 22:38:49,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-26 22:38:49,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:49,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:38:49,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:38:49,009 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:49,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:49,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1606712770, now seen corresponding path program 1 times [2020-10-26 22:38:49,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:49,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380436483] [2020-10-26 22:38:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:53,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:53,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-26 22:38:53,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3882 [2020-10-26 22:38:53,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:38:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:38:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:53,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:53,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:53,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:38:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 22:38:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:38:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:38:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:53,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:53,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:38:53,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 22:38:53,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:38:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:38:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 46 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:38:54,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380436483] [2020-10-26 22:38:54,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:54,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:38:54,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125101480] [2020-10-26 22:38:54,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:38:54,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:38:54,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:38:54,274 INFO L87 Difference]: Start difference. First operand 2586 states and 3227 transitions. Second operand 9 states. [2020-10-26 22:38:55,768 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:38:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:58,512 INFO L93 Difference]: Finished difference Result 5415 states and 7077 transitions. [2020-10-26 22:38:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:38:58,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2020-10-26 22:38:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:58,533 INFO L225 Difference]: With dead ends: 5415 [2020-10-26 22:38:58,533 INFO L226 Difference]: Without dead ends: 3203 [2020-10-26 22:38:58,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:38:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2020-10-26 22:38:58,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 2217. [2020-10-26 22:38:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-26 22:38:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2847 transitions. [2020-10-26 22:38:58,627 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2847 transitions. Word has length 227 [2020-10-26 22:38:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:58,627 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 2847 transitions. [2020-10-26 22:38:58,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:38:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2847 transitions. [2020-10-26 22:38:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 22:38:58,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:58,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:38:58,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:38:58,633 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:58,635 INFO L82 PathProgramCache]: Analyzing trace with hash -613725754, now seen corresponding path program 1 times [2020-10-26 22:38:58,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:58,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881233106] [2020-10-26 22:38:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:00,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:00,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 22:39:00,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2032 [2020-10-26 22:39:00,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:39:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:39:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:00,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:00,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:00,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:00,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:39:00,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:01,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:01,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:01,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:01,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 22:39:01,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:39:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 22:39:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:39:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:01,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881233106] [2020-10-26 22:39:01,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:01,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:01,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105455842] [2020-10-26 22:39:01,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:01,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:01,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:01,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:01,411 INFO L87 Difference]: Start difference. First operand 2217 states and 2847 transitions. Second operand 7 states. [2020-10-26 22:39:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:05,892 INFO L93 Difference]: Finished difference Result 5065 states and 6526 transitions. [2020-10-26 22:39:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:39:05,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-26 22:39:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:05,915 INFO L225 Difference]: With dead ends: 5065 [2020-10-26 22:39:05,915 INFO L226 Difference]: Without dead ends: 2854 [2020-10-26 22:39:05,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:39:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2020-10-26 22:39:06,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2634. [2020-10-26 22:39:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2634 states. [2020-10-26 22:39:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 3335 transitions. [2020-10-26 22:39:06,021 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 3335 transitions. Word has length 228 [2020-10-26 22:39:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:06,021 INFO L481 AbstractCegarLoop]: Abstraction has 2634 states and 3335 transitions. [2020-10-26 22:39:06,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 3335 transitions. [2020-10-26 22:39:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-26 22:39:06,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:06,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:39:06,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:39:06,028 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:06,029 INFO L82 PathProgramCache]: Analyzing trace with hash 57518514, now seen corresponding path program 1 times [2020-10-26 22:39:06,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:06,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176934221] [2020-10-26 22:39:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:07,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-26 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-26 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 22:39:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:07,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:07,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:39:07,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:07,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 22:39:07,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:07,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:07,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:07,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:39:07,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:39:07,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:39:07,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:39:07,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176934221] [2020-10-26 22:39:07,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:07,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:39:07,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125207076] [2020-10-26 22:39:07,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:39:07,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:07,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:39:07,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:39:07,620 INFO L87 Difference]: Start difference. First operand 2634 states and 3335 transitions. Second operand 6 states. [2020-10-26 22:39:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:11,670 INFO L93 Difference]: Finished difference Result 6084 states and 7789 transitions. [2020-10-26 22:39:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:39:11,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-10-26 22:39:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:11,688 INFO L225 Difference]: With dead ends: 6084 [2020-10-26 22:39:11,689 INFO L226 Difference]: Without dead ends: 3456 [2020-10-26 22:39:11,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:39:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2020-10-26 22:39:11,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 3036. [2020-10-26 22:39:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3036 states. [2020-10-26 22:39:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 3893 transitions. [2020-10-26 22:39:11,791 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 3893 transitions. Word has length 238 [2020-10-26 22:39:11,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:11,792 INFO L481 AbstractCegarLoop]: Abstraction has 3036 states and 3893 transitions. [2020-10-26 22:39:11,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:39:11,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 3893 transitions. [2020-10-26 22:39:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-26 22:39:11,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:11,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:39:11,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:39:11,799 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:11,799 INFO L82 PathProgramCache]: Analyzing trace with hash 812871690, now seen corresponding path program 1 times [2020-10-26 22:39:11,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:11,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266712655] [2020-10-26 22:39:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:13,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:13,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-26 22:39:13,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-26 22:39:13,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:39:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-26 22:39:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:13,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:13,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:13,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:13,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:13,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:39:13,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:14,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:14,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:14,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-26 22:39:14,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:39:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:14,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:14,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:14,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:39:14,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:14,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-26 22:39:14,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:39:14,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:14,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:39:14,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:39:14,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266712655] [2020-10-26 22:39:14,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:14,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:39:14,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97687567] [2020-10-26 22:39:14,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:39:14,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:39:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:39:14,902 INFO L87 Difference]: Start difference. First operand 3036 states and 3893 transitions. Second operand 9 states. [2020-10-26 22:39:18,139 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-26 22:39:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:19,973 INFO L93 Difference]: Finished difference Result 8659 states and 11308 transitions. [2020-10-26 22:39:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:39:19,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 258 [2020-10-26 22:39:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:20,006 INFO L225 Difference]: With dead ends: 8659 [2020-10-26 22:39:20,006 INFO L226 Difference]: Without dead ends: 5629 [2020-10-26 22:39:20,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:39:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2020-10-26 22:39:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5584. [2020-10-26 22:39:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5584 states. [2020-10-26 22:39:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 6937 transitions. [2020-10-26 22:39:20,191 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 6937 transitions. Word has length 258 [2020-10-26 22:39:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:20,192 INFO L481 AbstractCegarLoop]: Abstraction has 5584 states and 6937 transitions. [2020-10-26 22:39:20,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:39:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 6937 transitions. [2020-10-26 22:39:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-26 22:39:20,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:20,203 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:39:20,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:39:20,203 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:20,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1786512354, now seen corresponding path program 1 times [2020-10-26 22:39:20,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:20,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206172622] [2020-10-26 22:39:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:20,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:25,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:25,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-26 22:39:25,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:39:25,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 22:39:25,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 22:39:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 22:39:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:39:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:25,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:25,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:25,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:25,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:25,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-26 22:39:25,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:39:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:25,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:39:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 22:39:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:39:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:39:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:26,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:39:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 22:39:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:39:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 147 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-26 22:39:26,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206172622] [2020-10-26 22:39:26,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:26,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:26,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880006955] [2020-10-26 22:39:26,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:39:26,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:39:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:39:26,823 INFO L87 Difference]: Start difference. First operand 5584 states and 6937 transitions. Second operand 8 states. [2020-10-26 22:39:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:30,423 INFO L93 Difference]: Finished difference Result 12353 states and 16297 transitions. [2020-10-26 22:39:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:39:30,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 309 [2020-10-26 22:39:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:30,471 INFO L225 Difference]: With dead ends: 12353 [2020-10-26 22:39:30,471 INFO L226 Difference]: Without dead ends: 7944 [2020-10-26 22:39:30,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:39:30,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2020-10-26 22:39:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 7120. [2020-10-26 22:39:30,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7120 states. [2020-10-26 22:39:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 8754 transitions. [2020-10-26 22:39:30,714 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 8754 transitions. Word has length 309 [2020-10-26 22:39:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:30,715 INFO L481 AbstractCegarLoop]: Abstraction has 7120 states and 8754 transitions. [2020-10-26 22:39:30,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:39:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 8754 transitions. [2020-10-26 22:39:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-26 22:39:30,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:30,727 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:30,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:39:30,728 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:30,728 INFO L82 PathProgramCache]: Analyzing trace with hash -518384774, now seen corresponding path program 1 times [2020-10-26 22:39:30,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:30,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175055217] [2020-10-26 22:39:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:34,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-26 22:39:34,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3256 [2020-10-26 22:39:34,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:39:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:39:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:34,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:34,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:34,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:34,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:34,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:39:34,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:34,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:34,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:34,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:34,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 22:39:34,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:34,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:34,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:34,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:39:34,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:34,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 22:39:34,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:34,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:34,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:39:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:39:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:34,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:39:34,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 22:39:34,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:39:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 22:39:34,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175055217] [2020-10-26 22:39:34,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:34,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:34,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326737327] [2020-10-26 22:39:34,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:34,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:34,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:34,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:34,784 INFO L87 Difference]: Start difference. First operand 7120 states and 8754 transitions. Second operand 7 states. [2020-10-26 22:39:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:38,465 INFO L93 Difference]: Finished difference Result 15555 states and 19853 transitions. [2020-10-26 22:39:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:38,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-26 22:39:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:38,504 INFO L225 Difference]: With dead ends: 15555 [2020-10-26 22:39:38,504 INFO L226 Difference]: Without dead ends: 8819 [2020-10-26 22:39:38,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8819 states. [2020-10-26 22:39:38,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8819 to 7928. [2020-10-26 22:39:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7928 states. [2020-10-26 22:39:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7928 states to 7928 states and 9673 transitions. [2020-10-26 22:39:38,752 INFO L78 Accepts]: Start accepts. Automaton has 7928 states and 9673 transitions. Word has length 327 [2020-10-26 22:39:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:38,753 INFO L481 AbstractCegarLoop]: Abstraction has 7928 states and 9673 transitions. [2020-10-26 22:39:38,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7928 states and 9673 transitions. [2020-10-26 22:39:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-26 22:39:38,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:38,769 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:38,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:39:38,769 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash -55896638, now seen corresponding path program 1 times [2020-10-26 22:39:38,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:38,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316464548] [2020-10-26 22:39:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:38,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:40,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:40,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-26 22:39:40,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-10-26 22:39:40,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:39:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 22:39:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:40,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:40,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:40,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:40,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:40,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:40,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:39:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:40,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:40,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:39:40,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:40,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 22:39:40,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:39:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:39:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:39:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 22:39:41,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316464548] [2020-10-26 22:39:41,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:41,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:39:41,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835943261] [2020-10-26 22:39:41,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:39:41,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:41,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:39:41,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:39:41,547 INFO L87 Difference]: Start difference. First operand 7928 states and 9673 transitions. Second operand 6 states. [2020-10-26 22:39:42,897 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:39:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:44,076 INFO L93 Difference]: Finished difference Result 14342 states and 17627 transitions. [2020-10-26 22:39:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:39:44,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 332 [2020-10-26 22:39:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:44,104 INFO L225 Difference]: With dead ends: 14342 [2020-10-26 22:39:44,104 INFO L226 Difference]: Without dead ends: 7962 [2020-10-26 22:39:44,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:39:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2020-10-26 22:39:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 7926. [2020-10-26 22:39:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7926 states. [2020-10-26 22:39:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7926 states to 7926 states and 9650 transitions. [2020-10-26 22:39:44,309 INFO L78 Accepts]: Start accepts. Automaton has 7926 states and 9650 transitions. Word has length 332 [2020-10-26 22:39:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:44,311 INFO L481 AbstractCegarLoop]: Abstraction has 7926 states and 9650 transitions. [2020-10-26 22:39:44,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:39:44,311 INFO L276 IsEmpty]: Start isEmpty. Operand 7926 states and 9650 transitions. [2020-10-26 22:39:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-26 22:39:44,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:44,324 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:39:44,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:39:44,325 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:44,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1001904706, now seen corresponding path program 1 times [2020-10-26 22:39:44,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:44,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230151813] [2020-10-26 22:39:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:44,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:47,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:47,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-26 22:39:47,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3203 [2020-10-26 22:39:47,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:39:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:39:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:47,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:47,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:47,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:47,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:47,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:47,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:39:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:47,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:39:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:48,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:39:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:48,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:48,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:39:48,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:39:48,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:39:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 165 proven. 73 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:39:48,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230151813] [2020-10-26 22:39:48,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:48,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:48,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603205457] [2020-10-26 22:39:48,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:48,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:48,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:48,344 INFO L87 Difference]: Start difference. First operand 7926 states and 9650 transitions. Second operand 7 states. [2020-10-26 22:39:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:51,744 INFO L93 Difference]: Finished difference Result 17992 states and 22074 transitions. [2020-10-26 22:39:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:39:51,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-26 22:39:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:51,778 INFO L225 Difference]: With dead ends: 17992 [2020-10-26 22:39:51,779 INFO L226 Difference]: Without dead ends: 10260 [2020-10-26 22:39:51,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:39:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10260 states. [2020-10-26 22:39:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10260 to 10026. [2020-10-26 22:39:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10026 states. [2020-10-26 22:39:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10026 states to 10026 states and 12173 transitions. [2020-10-26 22:39:52,025 INFO L78 Accepts]: Start accepts. Automaton has 10026 states and 12173 transitions. Word has length 332 [2020-10-26 22:39:52,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:52,026 INFO L481 AbstractCegarLoop]: Abstraction has 10026 states and 12173 transitions. [2020-10-26 22:39:52,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10026 states and 12173 transitions. [2020-10-26 22:39:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-26 22:39:52,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:52,042 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:39:52,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:39:52,042 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1018604625, now seen corresponding path program 1 times [2020-10-26 22:39:52,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:52,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589160864] [2020-10-26 22:39:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:52,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:55,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:55,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-26 22:39:55,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3660 [2020-10-26 22:39:55,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:39:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:39:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:55,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:55,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:55,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:55,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:39:55,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:56,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 22:39:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:39:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:56,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:39:56,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:56,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 22:39:56,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:39:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-26 22:39:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:56,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:56,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:39:56,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:39:56,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:39:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 164 proven. 72 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:39:56,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589160864] [2020-10-26 22:39:56,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:56,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:56,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887366833] [2020-10-26 22:39:56,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:56,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:56,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:56,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:56,504 INFO L87 Difference]: Start difference. First operand 10026 states and 12173 transitions. Second operand 7 states. [2020-10-26 22:39:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:59,835 INFO L93 Difference]: Finished difference Result 18545 states and 22704 transitions. [2020-10-26 22:39:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:39:59,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-26 22:39:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:59,872 INFO L225 Difference]: With dead ends: 18545 [2020-10-26 22:39:59,873 INFO L226 Difference]: Without dead ends: 10656 [2020-10-26 22:39:59,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2020-10-26 22:40:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 10604. [2020-10-26 22:40:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10604 states. [2020-10-26 22:40:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10604 states to 10604 states and 12872 transitions. [2020-10-26 22:40:00,138 INFO L78 Accepts]: Start accepts. Automaton has 10604 states and 12872 transitions. Word has length 336 [2020-10-26 22:40:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:00,138 INFO L481 AbstractCegarLoop]: Abstraction has 10604 states and 12872 transitions. [2020-10-26 22:40:00,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 10604 states and 12872 transitions. [2020-10-26 22:40:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-26 22:40:00,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:00,157 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:00,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:40:00,157 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:00,158 INFO L82 PathProgramCache]: Analyzing trace with hash 231226015, now seen corresponding path program 1 times [2020-10-26 22:40:00,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:00,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870091877] [2020-10-26 22:40:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:00,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:02,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:02,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-26 22:40:02,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-10-26 22:40:02,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 22:40:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:40:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 349 [2020-10-26 22:40:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:02,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:40:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:02,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:02,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 22:40:02,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:40:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:03,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 22:40:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:40:03,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870091877] [2020-10-26 22:40:03,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:03,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:40:03,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003877975] [2020-10-26 22:40:03,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:40:03,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:03,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:40:03,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:40:03,283 INFO L87 Difference]: Start difference. First operand 10604 states and 12872 transitions. Second operand 11 states. [2020-10-26 22:40:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:11,311 INFO L93 Difference]: Finished difference Result 27819 states and 36000 transitions. [2020-10-26 22:40:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 22:40:11,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 344 [2020-10-26 22:40:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:11,389 INFO L225 Difference]: With dead ends: 27819 [2020-10-26 22:40:11,390 INFO L226 Difference]: Without dead ends: 19352 [2020-10-26 22:40:11,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:40:11,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19352 states. [2020-10-26 22:40:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19352 to 18030. [2020-10-26 22:40:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18030 states. [2020-10-26 22:40:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18030 states to 18030 states and 22339 transitions. [2020-10-26 22:40:11,952 INFO L78 Accepts]: Start accepts. Automaton has 18030 states and 22339 transitions. Word has length 344 [2020-10-26 22:40:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:11,953 INFO L481 AbstractCegarLoop]: Abstraction has 18030 states and 22339 transitions. [2020-10-26 22:40:11,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:40:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 18030 states and 22339 transitions. [2020-10-26 22:40:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-26 22:40:11,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:11,973 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:11,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:40:11,973 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1673232627, now seen corresponding path program 1 times [2020-10-26 22:40:11,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:11,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021140241] [2020-10-26 22:40:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:12,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2496 [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:14,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:14,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:14,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:40:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:14,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:40:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:40:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:15,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:15,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:40:15,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:15,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 22:40:15,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-26 22:40:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 198 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-26 22:40:15,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021140241] [2020-10-26 22:40:15,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:15,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:15,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433025201] [2020-10-26 22:40:15,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:15,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:15,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:15,163 INFO L87 Difference]: Start difference. First operand 18030 states and 22339 transitions. Second operand 7 states. [2020-10-26 22:40:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:19,069 INFO L93 Difference]: Finished difference Result 40094 states and 50525 transitions. [2020-10-26 22:40:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:40:19,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-26 22:40:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:19,146 INFO L225 Difference]: With dead ends: 40094 [2020-10-26 22:40:19,146 INFO L226 Difference]: Without dead ends: 24231 [2020-10-26 22:40:19,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24231 states. [2020-10-26 22:40:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24231 to 21857. [2020-10-26 22:40:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21857 states. [2020-10-26 22:40:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21857 states to 21857 states and 27547 transitions. [2020-10-26 22:40:19,745 INFO L78 Accepts]: Start accepts. Automaton has 21857 states and 27547 transitions. Word has length 347 [2020-10-26 22:40:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:19,746 INFO L481 AbstractCegarLoop]: Abstraction has 21857 states and 27547 transitions. [2020-10-26 22:40:19,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 21857 states and 27547 transitions. [2020-10-26 22:40:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-26 22:40:19,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:19,762 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:19,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:40:19,762 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash 195750662, now seen corresponding path program 1 times [2020-10-26 22:40:19,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:19,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147976761] [2020-10-26 22:40:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:40:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:24,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:24,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:40:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:40:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:40:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:40:25,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 22:40:25,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-26 22:40:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 160 proven. 68 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:40:25,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147976761] [2020-10-26 22:40:25,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:25,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:25,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615259971] [2020-10-26 22:40:25,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:25,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:25,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:25,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:25,421 INFO L87 Difference]: Start difference. First operand 21857 states and 27547 transitions. Second operand 7 states. [2020-10-26 22:40:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:30,927 INFO L93 Difference]: Finished difference Result 50943 states and 64889 transitions. [2020-10-26 22:40:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:40:30,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-26 22:40:30,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:31,012 INFO L225 Difference]: With dead ends: 50943 [2020-10-26 22:40:31,012 INFO L226 Difference]: Without dead ends: 29470 [2020-10-26 22:40:31,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29470 states. [2020-10-26 22:40:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29470 to 29040. [2020-10-26 22:40:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29040 states. [2020-10-26 22:40:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29040 states to 29040 states and 35212 transitions. [2020-10-26 22:40:31,616 INFO L78 Accepts]: Start accepts. Automaton has 29040 states and 35212 transitions. Word has length 355 [2020-10-26 22:40:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:31,617 INFO L481 AbstractCegarLoop]: Abstraction has 29040 states and 35212 transitions. [2020-10-26 22:40:31,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 29040 states and 35212 transitions. [2020-10-26 22:40:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-26 22:40:31,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:31,628 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:40:31,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:40:31,628 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash -417886646, now seen corresponding path program 1 times [2020-10-26 22:40:31,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:31,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294825537] [2020-10-26 22:40:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:33,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-26 22:40:33,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-26 22:40:33,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:40:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:40:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:33,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:33,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:33,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:33,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:40:33,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:33,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:33,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:33,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:40:33,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:40:33,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:40:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:33,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:40:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:33,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:33,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:40:33,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:40:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:40:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 22:40:33,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294825537] [2020-10-26 22:40:33,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:33,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:40:33,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196807735] [2020-10-26 22:40:33,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:40:33,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:33,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:40:33,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:40:33,932 INFO L87 Difference]: Start difference. First operand 29040 states and 35212 transitions. Second operand 8 states. [2020-10-26 22:40:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:39,409 INFO L93 Difference]: Finished difference Result 53467 states and 65201 transitions. [2020-10-26 22:40:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:40:39,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 359 [2020-10-26 22:40:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:39,499 INFO L225 Difference]: With dead ends: 53467 [2020-10-26 22:40:39,500 INFO L226 Difference]: Without dead ends: 29262 [2020-10-26 22:40:39,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:40:39,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29262 states. [2020-10-26 22:40:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29262 to 29022. [2020-10-26 22:40:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29022 states. [2020-10-26 22:40:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29022 states to 29022 states and 35001 transitions. [2020-10-26 22:40:40,406 INFO L78 Accepts]: Start accepts. Automaton has 29022 states and 35001 transitions. Word has length 359 [2020-10-26 22:40:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:40,406 INFO L481 AbstractCegarLoop]: Abstraction has 29022 states and 35001 transitions. [2020-10-26 22:40:40,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:40:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 29022 states and 35001 transitions. [2020-10-26 22:40:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-26 22:40:40,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:40,573 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:40:40,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:40:40,573 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:40,574 INFO L82 PathProgramCache]: Analyzing trace with hash 869824388, now seen corresponding path program 1 times [2020-10-26 22:40:40,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:40,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995575592] [2020-10-26 22:40:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:41,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-26 22:40:41,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-26 22:40:41,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-26 22:40:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 22:40:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:41,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:41,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:41,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:41,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:41,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:41,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:40:41,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 22:40:41,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:40:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:42,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-26 22:40:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:42,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 22:40:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-26 22:40:43,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995575592] [2020-10-26 22:40:43,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:43,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:43,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305233235] [2020-10-26 22:40:43,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:43,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:43,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:43,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:43,362 INFO L87 Difference]: Start difference. First operand 29022 states and 35001 transitions. Second operand 7 states. [2020-10-26 22:40:43,609 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-26 22:40:44,841 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-26 22:40:45,012 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:40:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:46,578 INFO L93 Difference]: Finished difference Result 52362 states and 63561 transitions. [2020-10-26 22:40:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:40:46,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-26 22:40:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:46,636 INFO L225 Difference]: With dead ends: 52362 [2020-10-26 22:40:46,636 INFO L226 Difference]: Without dead ends: 29106 [2020-10-26 22:40:46,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:40:46,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29106 states. [2020-10-26 22:40:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29106 to 29018. [2020-10-26 22:40:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29018 states. [2020-10-26 22:40:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29018 states to 29018 states and 34959 transitions. [2020-10-26 22:40:47,338 INFO L78 Accepts]: Start accepts. Automaton has 29018 states and 34959 transitions. Word has length 375 [2020-10-26 22:40:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:47,339 INFO L481 AbstractCegarLoop]: Abstraction has 29018 states and 34959 transitions. [2020-10-26 22:40:47,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 29018 states and 34959 transitions. [2020-10-26 22:40:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-26 22:40:47,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:47,351 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:47,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:40:47,351 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash -998000066, now seen corresponding path program 1 times [2020-10-26 22:40:47,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:47,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481938612] [2020-10-26 22:40:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-26 22:40:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1848 [2020-10-26 22:40:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:40:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 22:40:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:40:49,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:40:49,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 22:40:49,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:40:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:40:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 22:40:49,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 22:40:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 22:40:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-26 22:40:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 200 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:40:50,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481938612] [2020-10-26 22:40:50,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:50,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:50,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218400607] [2020-10-26 22:40:50,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:50,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:50,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:50,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:50,190 INFO L87 Difference]: Start difference. First operand 29018 states and 34959 transitions. Second operand 7 states. [2020-10-26 22:40:54,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:54,500 INFO L93 Difference]: Finished difference Result 55943 states and 67443 transitions. [2020-10-26 22:40:54,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:40:54,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-26 22:40:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:54,563 INFO L225 Difference]: With dead ends: 55943 [2020-10-26 22:40:54,564 INFO L226 Difference]: Without dead ends: 31936 [2020-10-26 22:40:54,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:40:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31936 states. [2020-10-26 22:40:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31936 to 30172. [2020-10-26 22:40:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30172 states. [2020-10-26 22:40:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30172 states to 30172 states and 36144 transitions. [2020-10-26 22:40:55,322 INFO L78 Accepts]: Start accepts. Automaton has 30172 states and 36144 transitions. Word has length 388 [2020-10-26 22:40:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:55,323 INFO L481 AbstractCegarLoop]: Abstraction has 30172 states and 36144 transitions. [2020-10-26 22:40:55,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand 30172 states and 36144 transitions. [2020-10-26 22:40:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-26 22:40:55,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:55,339 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:55,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:40:55,340 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:55,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2105517942, now seen corresponding path program 1 times [2020-10-26 22:40:55,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:55,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837428949] [2020-10-26 22:40:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:56,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-26 22:40:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4096 [2020-10-26 22:40:59,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 22:40:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:40:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 22:40:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:59,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:40:59,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:59,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:40:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 22:40:59,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:40:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:41:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 22:41:00,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-26 22:41:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:41:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 22:41:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-26 22:41:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:41:00,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-26 22:41:00,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:41:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 81 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:41:01,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837428949] [2020-10-26 22:41:01,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:01,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:41:01,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896360267] [2020-10-26 22:41:01,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:41:01,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:41:01,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:41:01,451 INFO L87 Difference]: Start difference. First operand 30172 states and 36144 transitions. Second operand 9 states. [2020-10-26 22:41:01,943 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-26 22:41:03,071 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-26 22:41:05,104 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:41:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:07,054 INFO L93 Difference]: Finished difference Result 59440 states and 71248 transitions. [2020-10-26 22:41:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 22:41:07,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 445 [2020-10-26 22:41:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:07,151 INFO L225 Difference]: With dead ends: 59440 [2020-10-26 22:41:07,151 INFO L226 Difference]: Without dead ends: 35034 [2020-10-26 22:41:07,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 22:41:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35034 states. [2020-10-26 22:41:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35034 to 34752. [2020-10-26 22:41:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34752 states. [2020-10-26 22:41:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34752 states to 34752 states and 41262 transitions. [2020-10-26 22:41:07,844 INFO L78 Accepts]: Start accepts. Automaton has 34752 states and 41262 transitions. Word has length 445 [2020-10-26 22:41:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:07,844 INFO L481 AbstractCegarLoop]: Abstraction has 34752 states and 41262 transitions. [2020-10-26 22:41:07,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:41:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 34752 states and 41262 transitions. [2020-10-26 22:41:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-26 22:41:07,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:07,860 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:07,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:41:07,860 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:07,861 INFO L82 PathProgramCache]: Analyzing trace with hash 321162338, now seen corresponding path program 1 times [2020-10-26 22:41:07,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:07,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610554448] [2020-10-26 22:41:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:41:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:09,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:09,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:41:09,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:41:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 22:41:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:41:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-26 22:41:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:09,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:09,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:41:09,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 22:41:09,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-26 22:41:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 97 proven. 4 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2020-10-26 22:41:10,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610554448] [2020-10-26 22:41:10,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:10,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:41:10,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427269539] [2020-10-26 22:41:10,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:41:10,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:10,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:41:10,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:41:10,011 INFO L87 Difference]: Start difference. First operand 34752 states and 41262 transitions. Second operand 5 states. [2020-10-26 22:41:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:12,237 INFO L93 Difference]: Finished difference Result 65299 states and 77819 transitions. [2020-10-26 22:41:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:41:12,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 445 [2020-10-26 22:41:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:12,309 INFO L225 Difference]: With dead ends: 65299 [2020-10-26 22:41:12,309 INFO L226 Difference]: Without dead ends: 34412 [2020-10-26 22:41:12,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:41:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34412 states. [2020-10-26 22:41:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34412 to 34325. [2020-10-26 22:41:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34325 states. [2020-10-26 22:41:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34325 states to 34325 states and 40643 transitions. [2020-10-26 22:41:12,935 INFO L78 Accepts]: Start accepts. Automaton has 34325 states and 40643 transitions. Word has length 445 [2020-10-26 22:41:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:12,936 INFO L481 AbstractCegarLoop]: Abstraction has 34325 states and 40643 transitions. [2020-10-26 22:41:12,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:41:12,936 INFO L276 IsEmpty]: Start isEmpty. Operand 34325 states and 40643 transitions. [2020-10-26 22:41:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-26 22:41:12,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:12,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 22:41:12,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:41:12,947 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:12,948 INFO L82 PathProgramCache]: Analyzing trace with hash 624396230, now seen corresponding path program 1 times [2020-10-26 22:41:12,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:12,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006913414] [2020-10-26 22:41:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-26 22:41:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-26 22:41:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 329 [2020-10-26 22:41:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:41:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:13,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:13,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:13,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:13,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:41:13,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:13,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:41:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:41:13,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 22:41:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:41:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:14,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:41:14,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:41:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:14,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:41:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:14,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:14,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:14,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 22:41:14,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:14,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 22:41:14,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:41:14,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-26 22:41:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:14,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:14,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:41:14,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:41:14,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:41:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-26 22:41:15,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006913414] [2020-10-26 22:41:15,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:15,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:15,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681745996] [2020-10-26 22:41:15,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:15,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:15,164 INFO L87 Difference]: Start difference. First operand 34325 states and 40643 transitions. Second operand 7 states. [2020-10-26 22:41:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:19,372 INFO L93 Difference]: Finished difference Result 67027 states and 79340 transitions. [2020-10-26 22:41:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:41:19,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-10-26 22:41:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:19,448 INFO L225 Difference]: With dead ends: 67027 [2020-10-26 22:41:19,448 INFO L226 Difference]: Without dead ends: 37505 [2020-10-26 22:41:19,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37505 states. [2020-10-26 22:41:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37505 to 35131. [2020-10-26 22:41:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35131 states. [2020-10-26 22:41:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35131 states to 35131 states and 41034 transitions. [2020-10-26 22:41:20,089 INFO L78 Accepts]: Start accepts. Automaton has 35131 states and 41034 transitions. Word has length 447 [2020-10-26 22:41:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:20,090 INFO L481 AbstractCegarLoop]: Abstraction has 35131 states and 41034 transitions. [2020-10-26 22:41:20,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 35131 states and 41034 transitions. [2020-10-26 22:41:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-26 22:41:20,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:20,101 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:20,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:41:20,101 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash 246990335, now seen corresponding path program 1 times [2020-10-26 22:41:20,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:20,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538445341] [2020-10-26 22:41:20,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:23,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:23,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-26 22:41:23,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3189 [2020-10-26 22:41:23,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:41:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-26 22:41:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 22:41:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:23,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:23,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:23,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:23,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:41:23,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:23,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:23,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:23,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:23,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:41:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 22:41:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:41:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:41:23,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:41:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 22:41:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 302 proven. 31 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 22:41:24,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538445341] [2020-10-26 22:41:24,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:24,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:41:24,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878306744] [2020-10-26 22:41:24,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:41:24,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:41:24,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:41:24,199 INFO L87 Difference]: Start difference. First operand 35131 states and 41034 transitions. Second operand 6 states. [2020-10-26 22:41:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:27,593 INFO L93 Difference]: Finished difference Result 37678 states and 43941 transitions. [2020-10-26 22:41:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:41:27,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 447 [2020-10-26 22:41:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:27,698 INFO L225 Difference]: With dead ends: 37678 [2020-10-26 22:41:27,698 INFO L226 Difference]: Without dead ends: 37675 [2020-10-26 22:41:27,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:41:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37675 states. [2020-10-26 22:41:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37675 to 35519. [2020-10-26 22:41:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35519 states. [2020-10-26 22:41:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35519 states to 35519 states and 41520 transitions. [2020-10-26 22:41:28,422 INFO L78 Accepts]: Start accepts. Automaton has 35519 states and 41520 transitions. Word has length 447 [2020-10-26 22:41:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:28,423 INFO L481 AbstractCegarLoop]: Abstraction has 35519 states and 41520 transitions. [2020-10-26 22:41:28,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:41:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 35519 states and 41520 transitions. [2020-10-26 22:41:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-26 22:41:28,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:28,445 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:41:28,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:41:28,445 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1009798536, now seen corresponding path program 1 times [2020-10-26 22:41:28,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:28,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540514909] [2020-10-26 22:41:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-26 22:41:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:41:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:41:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:41:33,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:41:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:41:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:41:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 22:41:34,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:41:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:41:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:34,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:41:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:34,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:34,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:41:34,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-26 22:41:34,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:41:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:34,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-26 22:41:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:34,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:34,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:41:34,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:41:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:41:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 209 proven. 470 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-26 22:41:35,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540514909] [2020-10-26 22:41:35,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:35,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 22:41:35,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506095840] [2020-10-26 22:41:35,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:41:35,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:35,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:41:35,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:41:35,322 INFO L87 Difference]: Start difference. First operand 35519 states and 41520 transitions. Second operand 11 states. [2020-10-26 22:41:35,556 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-26 22:41:40,042 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-26 22:41:40,260 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-26 22:41:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:41,612 INFO L93 Difference]: Finished difference Result 68061 states and 81207 transitions. [2020-10-26 22:41:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 22:41:41,614 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 481 [2020-10-26 22:41:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:41,703 INFO L225 Difference]: With dead ends: 68061 [2020-10-26 22:41:41,703 INFO L226 Difference]: Without dead ends: 37555 [2020-10-26 22:41:41,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2020-10-26 22:41:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37555 states. [2020-10-26 22:41:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37555 to 37245. [2020-10-26 22:41:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37245 states. [2020-10-26 22:41:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37245 states to 37245 states and 43470 transitions. [2020-10-26 22:41:42,523 INFO L78 Accepts]: Start accepts. Automaton has 37245 states and 43470 transitions. Word has length 481 [2020-10-26 22:41:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:42,523 INFO L481 AbstractCegarLoop]: Abstraction has 37245 states and 43470 transitions. [2020-10-26 22:41:42,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:41:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 37245 states and 43470 transitions. [2020-10-26 22:41:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-26 22:41:42,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:42,541 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 22:41:42,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 22:41:42,542 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1240817411, now seen corresponding path program 1 times [2020-10-26 22:41:42,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:42,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833570323] [2020-10-26 22:41:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:44,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-26 22:41:46,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:41:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4079 [2020-10-26 22:41:46,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:41:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:41:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-26 22:41:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:47,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:47,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:41:47,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:41:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:47,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 22:41:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:41:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:47,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:41:47,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-26 22:41:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:41:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0